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. Create Free Account.

Patent Plaques

The "Plaque It!" function allows inventors or companies to showcase their intellectual property by creating a virtual patent plaque with just one click. The resulting plaque code can be used on web sites, blogs, social networking sites, etc. as an attractive way of linking to the full text on the document on the FreePatentsOnline web site. If you or your company own a patent, Try it Now!

News & Updates

FreePatentsOnline now offers chemical search! Through entry of chemicals via SMILES, the patent database can be searched using normalized chemical formulas to ensure much more comprehensive searching than possible using regular keywords. Try it out now.

Most Popular Patenting Companies

IBM Canon HP Panasonic Samsung Micron Microsoft Hitachi Toshiba Fujitsu 3M

Most Popular Patent Topics

Computers: Control Computers Graphic Cards Permitting Access
Software: Finance Database Schemas
Telecom: Cell Phones Communications Telephones
Medical: Heart Surgery Cosmetic Surgery Dentistry Obesity Surgery Instruments Splints and Bandages Cancer Respiratory
Drugs: Drugs Vasodialators Gene Therapy
Measurement & Testing: Flow Meter Mass Probe and Sensors Geometric Instruments
Electronics: Audio Signal Processing
Chemistry: Molecular Biology Adhesives and Rubbers Liquid Purification Inorganic Compounds
Imaging: Optical Systems
Health: Exercise Devices (1) Exercise Devices (2) Food Weight Loss and Supplements Cooking
Industrial: Land Vehicles Metal Working Nonmetallic Processes 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
Material Handling: Vacuum Handling Swinging Support Cutting Grinding Vehicle Attached Fluids Scrubbing and Cleaning Article Carriers Dispensing
Buildings and Construction: Vibration and Earthquake Isolation Gutter-related Screen Walls Air Ventilation Supports Lighting Racks Sign Displays Furnaces Locks and Fasteners Ladders and Scaffolds Flexible or Portable Panels
Home and Fashion: Apparel Baths & Closets Beds Chairs
Husbandry: Animal Plant
Recreation: Games Fishing and Trapping Toys
Electrical: Heating Systems and Devices Outlets Connectors Measuring and Testing