Filter unit
United States Patent D831786

Zou, Zhibin (Qingdao, CN)
Application Number:
Publication Date:
Filing Date:
Qingdao Ecopure Filter Co., Ltd (Qingdao, Shangdong Province, CN)
Primary Class:
International Classes:
(IPC1-7): 2301
Field of Search:
D23/207, D23/209, 210/232, 210/282, 210/493.2
View Patent Images:
US Patent References:
9868081Water treatment cartridge with sealable inlet and outlet to prevent leaks2018-01-16Zhang
D795995Water filter2017-08-29ZouD23/209
D794749Water filter2017-08-15ZouD23/209
D794750Water filter2017-08-15ZouD23/209
D794751Water filter2017-08-15ZouD23/209
D792943Filter unit2017-07-25ZouD23/209
D788879Water filter2017-06-06ZouD23/209
D774623Water filter fitting2016-12-20LuD23/209
D773608Manifold engagement portion of a filter cartridge2016-12-06NelsonD23/209
D770011Manifold engagement portion of a filter cartridge2016-10-25NelsonD23/209
D764021Fitting section of a water filter2016-08-16LuD23/209
D760868Water filter fitting2016-07-05LuD23/209
D731616Water filter cartridge2015-06-09ZouD23/209
8474631Filter system and filter element for filtering fluids2013-07-02Kocksch210/450
D655378Filter unit2012-03-06KruckenbergD23/209
D654565Filter unit2012-02-21KruckenbergD23/209
D599880Filter cartridge2009-09-08RampenD23/209
D547821Reverse osmosis cartridge end2007-07-31KennedyD23/207
D541371Filter cartridge cap2007-04-24McKayD23/209
D494654Fluidic cartridge fittings2004-08-17MacaulayD23/209
D472299Filter cartridge connector2003-03-25FritzeD23/209
D322836Top cap of a quick-change filter cartridgeDecember, 1991PetrucciD23/209

Primary Examiner:
Webster, Robin V.
Attorney, Agent or Firm:
Muncy, Geissler, Olds & Lowe, P.C.

1. The ornamental design for a filter unit, as shown and described.


FIG. 1 is a Front elevational view of a filter unit showing my new design;

FIG. 2 is a Rear elevational view thereof;

FIG. 3 is a Left side view thereof;

FIG. 4 is a Right side view thereof;

FIG. 5 is a Top plan view thereof;

FIG. 6 is a Bottom plan view thereof; and,

FIG. 7 is a Perspective view thereof.

The broken lines in the drawing depict portions of the filter unit that form no part of the claimed design.