Patent Searching

The FreePatentsOnline search engine is one of the most powerful, fastest and easiest patent search engines on the web. Our search allows advanced search techniques such as word stemming, proximity searching, relevancy ranking and search term weighting to help you find exactly what you are looking for. And, our account features let you organize, annotate and share documents, and Alerts let you instantly be notified when new documents of interest are published.

Document Delivery

All documents are available in a highly-compressed PDF format for fast downloading, with or without searchable text.

Patent Research Tools

FreePatentsOnline has created a number of widgets for the patent professional and those interested in intellectual property. These include:
  • Google Toolbar Plugin - Add the FreePatentsOnline search to the Google Toolbar.
  • Search Box - Put the FreePatentsOnline search on your site!
  • Patent Plaque - Inventors and Assignees can create virtual plaques to showcase their inventions and link to the full text of their patent.

News & Updates

FreePatentsOnline now offers an exciting new mapping visualization tool. You can see where innovation happens and view data across the nation, region, or even your local area. Find companies and inventors at the cutting edge! Try it out now.

Most Popular Patenting Companies

Boeing Cisco Broadcom General Electric IBM Canon HP Panasonic Samsung Micron Microsoft Hitachi Toshiba 3M

Most Popular Patent Topics

Computers: Permitting Access Electrical Computers
Software: Finance Dynamic IR Card Processing Data Processing Data Analysis
Telecom: Communications Related
Medical: Heart Surgery Cosmetic Surgery Dentistry Obesity Surgery Instruments Splints and Bandages Cancer Respiratory
Drugs: Drugs Vasodialators Gene Therapy Other Drug Related
Measurement & Testing: Flow Meter Mass Probe and Sensors Geometric Instruments Meters
Electronics: Audio Signal Processing Semiconductors
Chemistry: Bonding Liquid Purification, Chemical Applications Protein
Imaging: Optical Systems Photocopying Devices
Health: Exercise Devices (1) Exercise Devices (2) Food Weight Loss and Supplements Cooking Surgical Procedures
Industrial: Land Vehicles Metal Working Metals Nonmetallic Processes Pipe Couplings Cabinet Structure Manufacturing Materials Light Fixtures Bodies and Tops for Vehicles Internal-Combustion Engines Heat Accumulators Special Receptacle or Package Power Conveyor Refrigeration Hydraulic Engineering Ships Bearings Valve Actuation Metal Deforming Vapor Contact
Material Handling: Vacuum Handling Swinging Support Cutting Grinding Vehicle Attached Fluids Scrubbing and Cleaning Article Carriers Dispensing Spraying Sorters Plastic Article
Buildings and Construction: Vibration and Earthquake Isolation Gutter-related Screen Walls Air Ventilation Supports Lighting Racks Sign Displays Furnaces Locks and Fasteners Shelving Ladders and Scaffolds Door Related Flexible or Portable Panels Construction Miscellaneous Hardware
Home and Fashion: Apparel Baths & Closets Beds Bedrooms Cutlery Jars and Bottles Clothing Chairs Bags Textile Washing Tables and Flat Surfaces Toiletries
Husbandry: Animal Plant
Recreation: Games Fishing and Trapping Toys Tents and Coverings
Electrical: Conductors and Insulators Solar and Geothermal Heating Systems and Devices Outlets Connectors Measuring and Testing, Electrical Applications