Matches 1 - 50 out of 66 1 2 >


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US20150238291 DENTAL BLANK COMPRISING A PRE-SINTERED POROUS ZIRCONIA MATERIAL, PROCESS OF ITS PRODUCTION AND DENTAL ARTICLE FORMED FROM SAID DENTAL BLANK  
The invention relates to a dental mill blank comprising a pre-sintered porous zirconia material, the porous pre-sintered zirconia material showing a N2 adsorption of isotherm type IV according to...
US20120060557 Cut Product, in Particular Diamond, with Improved Characteristics and Method for Manufacturing Such a Product  
Cut product manufactured from a (semi) precious stone material, more particularly from natural or synthetic diamond, comprising a lower part (pavilion) with a bottom end (culet); an upper part...
US20140290638 GEMSTONE AND METHOD FOR CUTTING THE SAME  
The invention relates to a gemstone (10) comprises a girdle (13), a crown (11) and a pavilion (12). The crown has a table (14), ten star facets (15) surrounding the table, ten bezel facets (16)...
US20110146349 GEMSTONE AND METHOD FOR CUTTING THE SAME  
The invention relates to a gemstone (10) comprises a girdle (13), a crown (11) and a pavilion (12). The crown has a table (14), ten star facets (15) surrounding the table, ten bezel facets (16)...
US20120103016 CUSTOM STONES AND METHODS FOR PRODUCING CUSTOM STONES FOR JEWELRY  
A stone for jewelry is provided that includes a first layer made of a first material; a second layer made of a second material bonded to the first layer; and a third layer made of a third material...
US20110146350 ROUND BRILLIANT CUT GEMSTONE AND METHOD FOR CUTTING THE SAME  
The invention relates to a gemstone (10) comprises a girdle (13), a crown (11) and a pavilion (12). The crown (11) comprises a table (14), eight star facets (15) surrounding the table (14), eight...
US20110239705 DECORATIVE JEWEL AND METHOD FOR CUTTING DECORATIVE JEWEL  
The color stone 1 is formed of a material with a refractive index n of 1.55 to 2.40, and is subjected to round brilliant-cutting. The pavilion angle p and the crown angle c satisfy the correlation...
US20110302959 Precious stone setting  
The object of the present invention is a setting for a gemstone or diamond having a groove cut, based on gemstone or diamond shape, which acts as the setting. The groove in the gemstone or diamond...
US20120266631 SETTING FOR GEMSTONES, PARTICULARLY DIAMONDS  
A setting for a gemstone including a girdle, a crown on one side of the girdle, and a pavilion on the opposite side of the girdle, characterized in that the setting mounts the gemstone in an...
US20120291487 GEMSTONE OF NATURAL DIAMOND AND METHOD APPLIED THERETO  
Gemstone of natural diamond, characterised in that the gemstone (1) has two parallel faces (2-3, 4-5) in which the geometric plane that coincides with the aforementioned faces defines the volume...
US20110265514 METHOD OF CUTTING DIAMONDS  
In a method of taking a star facet of a diamond and extending its length to the girdle (the outside perimeter) of the diamond, a shield style (obelisk-shaped) facet is produced in rounds and fancy...
US20140090592 CONTINUOUS SAPPHIRE GROWTH  
Systems and methods for continuous sapphire growth are disclosed. One embodiment may take the form of a method including feeding a base material into a crucible located within a growth chamber,...
US20090320820 GEMSTONE WATERBATH DRILL  
A gemstone drill is of the drill press type which includes a motor suspended and slidably affixed between upstanding vertical telescoping rods. A drill bit is affixed to a spindle which is a...
US20050145238 Laser diamond blocking machine for faceting the bottom of a diamond  
A laser diamond blocking machine is used to facet the bottom of the diamond. Mechanically this machine consists of four units, namely sliding unit, lifting unit, revolving unit, indexing unit....
US20090038341 Round brilliant cut diamond and its incision method  
The present invention discloses a round brilliant cut diamond. The diamond includes a crown, a girdle, and a pavilion, the cut crown includes one regular octagon table, eight first facets, eight...
US20100000507 ANGLE CUT ON CVD DIAMOND  
A cut gemstone has one or more backside grooves cut into backside facets to form sub facets that operate to increase the brilliance of the cut gemstone.
US20150165647 METHOD FOR CUTTING A SINGLE CRYSTAL  
A method for cutting a single crystal having a first polar axis includes the steps of arranging the single crystal relative to a cutting tool in such a way that the first polar axis is oriented...
US20140246006 GEMSTONE PROCESSING  
An indexing unit of a gemstone processing machine and a method for processing gemstones is described herein. In an embodiment, the indexing unit of the gemstone processing machine includes a base...
US20130192579 GEMSTONE PRODUCTION FROM CVD DIAMOND PLATE  
A method of producing gemstones includes obtaining a plate of chemical vapor deposition formed diamond. The plate is cut into a plurality of geometrically optimized preforms. The preforms may be...
US20150132926 PROCESS FOR LARGE-SCALE AMMONOTHERMAL MANUFACTURING OF GALLIUM NITRIDE BOULES  
Large-scale manufacturing of gallium nitride boules using m-plane or wedge-shaped seed crystals can be accomplished using ammonothermal growth methods. Large-area single crystal seed plates are...
US20100059034 GEMSTONE PRODUCTION FROM CVD DIAMOND PLATE  
A method of producing gemstones includes obtaining a plate of chemical vapor deposition formed diamond. The plate is cut into a plurality of geometrically optimized preforms. The preforms may be...
US20070272223 Method for maintaining a polished concrete floor  
A method of maintaining and restoring the gloss of polished concrete, terrazzo, marble and granite floors utilizing floor maintenance machines is disclosed. The rotating head of the floor machines...
US20130213090 Hearts & Arrows SiC Cushion-Cut Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) cushion-cut gemstone which may...
US20120015799 METHOD FOR PRODUCING SAPPHIRE SINGLE CRYSTAL, AND SAPPHIRE SINGLE CRYSTAL OBTAINED BY THE METHOD  
A method for producing a sapphire single crystal, which includes: performing a sapphire single crystal growth step wherein a sapphire ingot, which is an ingot of sapphire single crystal, is...
US20080190139 Precious, Semiprecious or Mineral Cut Stone, and the Method of Cutting Same  
The invention concerns a precious, semi-precious or mineral cut stone, comprising a crown (1) including in its center a planar table (2) surrounded with several facets of the crown (3-5), a...
US20120298092 METHOD FOR PRODUCING GEMSTONES FROM SILICON CARBIDE  
A method of producing gemstones from silicon carbide comprises growing simultaneously a plurality of moissanite crystal blanks in a graphite mold, splitting up the blanks into individual crystals,...
US20130319045 Silicon Carbide Krupps Cut Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) Krupps cut gemstone.
US20130298605 Silicon Carbide Asscher Cut Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) Asscher cut gemstone.
US20130291589 Silicon Carbide Princess Cut Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) Princess cut gemstone.
US20100154473 Round brilliant cut diamond and its incision method  
The present invention discloses a round brilliant cut diamond. The diamond includes a crown, a girdle, and a pavilion, the cut crown includes one regular octagon table, eight first facets, eight...
US20100282234 ORNAMENTAL DIAMOND HAVING TWO-STAGE PAVILION  
An ornamental diamond is provided as an extremely bright diamond with numerous reflection patterns when viewed from above its table facet and crown facets. The diamond has the same crown as the...
US20140013801 Hearts & Arrows SiC Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) which may produce a “Hearts &...
US20130055763 Hearts & Arrows SiC Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) which may produce a “Hearts &...
US20110126815 METHOD OF STABILIZING OPALS  
The present invention protects opals during processing from rhyolite nodules. An opal containing rhyolite nodule is soaked in a heated polyester resin, styrene (100-42-5) solution for 24 hours per...
US20140054589 BISMUTH-DOPED SEMI-INSULATING GROUP III NITRIDE WAFER AND ITS PRODUCTION METHOD  
The present invention discloses a semi-insulating wafer of GaxAlyIn1-x-yN (0≦x≦1, 0≦x+y≦1) which is doped with bismuth (Bi). The semi-insulating wafer has the resistivity of 104 ohm-cm or more....
US20140083353 PLANE ORIENTATION OF CRYSTALLINE STRUCTURES  
Systems and method for creating crystalline parts having a desired primary and secondary crystallographic orientations are provided. One embodiment may take the form of a method of manufacturing a...
US20150191846 SYSTEM AND METHOD OF GROWING SILICON INGOTS FROM SEEDS IN A CRUCIBLE AND MANUFACTURE OF SEEDS USED THEREIN  
Systems and methods that reduce the overall cost of producing a silicon ingot are provided herein. More specifically, one or more surface pieces may be sliced from a silicon boule in relation to a...
US20120047950 SINGLE CRYSTAL DIAMOND GEMSTONES AND METHODS THEREFOR  
The disclosure relates to the inclusion of an image embedded in or on a single crystal diamond such that the image is part of the single crystal diamond structure. The disclosed methods use a...
US20130011677 GALLIUM NITRIDE CRYSTAL, GROUP 13 NITRIDE CRYSTAL, CRYSTAL SUBSTRATE, AND MANUFACTURING METHOD THEREOF  
A large sized bulk crystal is produced which allows to cut out a practical size of crystal substrate. The gallium nitride crystal has features in which a length L of c-axis is 9 mm or more, a...
US20150090245 METHOD AND APPARATUS FOR PROCESSING SAPPHIRE  
A method of producing a sapphire product from a suitable precursor material is disclosed. The method comprising the steps of placing a sapphire product precursor on a support apparatus of a...
US20150165646 SAPPHIRE WAFER SQUARING MACHINE WITH DOUBLE SWING CUTTER HEADS  
The present disclosure provides a sapphire wafer squaring machine with double swing cutter heads, including a frame, an unwinding mechanism, a winding mechanism, two cutter heads placed at an...
US20130280466 Large Diameter, High Quality SiC Single Crystals, Method and Apparatus  
A method and system of forming large-diameter SiC single crystals suitable for fabricating high crystal quality SiC substrates of 100, 125, 150 and 200 mm in diameter are described. The SiC single...
US20130000835 EASY BREAK GEODE  
An improved geode breaking method, system, and apparatus are disclosed. A geode can be broken or cut into at least two pieces, or grooved with a circumferential groove. The geode pieces can be...
US20150255279 SILICON CARBIDE SUBSTRATE, SILICON CARBIDE INGOT, AND METHODS FOR MANUFACTURING SILICON CARBIDE SUBSTRATE AND SILICON CARBIDE INGOT  
A silicon carbide substrate, a silicon carbide ingot, and methods for manufacturing the silicon carbide substrate and the silicon carbide ingot capable of improving a yield of a semiconductor...
US20150121960 METHOD AND APPARATUS FOR MACHINING DIAMONDS AND GEMSTONES USING FILAMENTATION BY BURST ULTRAFAST LASER PULSES  
A non-ablative laser machining method and apparatus for cutting facets of a diamond, using a material machining technique involving filamentation by burst ultrafast laser pulses well suited to...
US20150224594 METHOD OF CUTTING SUPER-HARD MATERIALS USING AN ELECTRON BEAM AND A RANGE OF BEAM SCANNING VELOCITIES  
A method of cutting a super-hard material (8) using an electron beam (6), wherein the electron beam (6) is directed onto a surface of the super-hard material (8) and moved relative to the surface...
US20140076299 MULTI-STEP CUTTING PROCESS  
Methods related to efficient processing of sapphire are discussed which are expected to both speed manufacture of corundum for applications and make the use of conundrum cost effective. In...
US20150158116 METHOD AND APPARATUS FOR INTERNALLY MARKING A SUBSTRATE HAVING A ROUGH SURFACE  
A method for laser processing provides a coating material (130) applied to a rough surface (42) of a substrate (44) to mitigate adverse optical effects that would be caused by roughness of the...
US20110036339 APPARATUS AND METHOD FOR MULTIPLE SUBSTRATE PROCESSING  
A system for cutting a plurality of substrates of integrated circuit units comprising a plurality of tables (40, 55), each table including a plurality of trays (37A, 37B, 57A, 57B), each tray...
US20170016140 CRUCIBLE, FABRICATION METHOD OF THE CRUCIBLE, AND FABRICATION METHOD OF A CRYSTALLINE MATERIAL BY MEANS OF SUCH A CRUCIBLE  
A crucible for formation of a crystalline material by solidification by growth on seed, including a bottom, at least one side wall orthogonal to the bottom of the crucible, and at least two marks...

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