Chemistry

A patent is an exclusively right granted for an invention, which is a product or a process that provides a new way of doing something, or offers a new technical solution to a problem. (WIPO)

• esp@cenet
  International patent database (by European Patent Office) containing 100+ million patents from more than 90 national and regional patent offices. Online tutorials for esp@cenet searching are also available.
• Canadian Intellectual Property Office (CIPO) Patent Database
  Canadian patent records, 1869 to present; full-text documents, 1920 to present. Guide to Patents.
• U.S. Patent Office
  U.S. patents, 1790 to present and published applications, 2001 to present. Patents prior to 1976 can be retrieved by number, date and classification. TIFF viewer required to view/print patent documents. General overview of the U.S. patent system.
• SciFinder Web
  Patents from 61 patent authorities. Click for CAS coverage of patents.
• FreePatentsOnline
• Google Patents : U.S. patents in PDF format, 1790 to present. Also covers JP, EP, WO, GB, CN, etc.

• Information Sources in Patents
• Filing Patents Online: A Professional Guide
• Patent Fundamentals for Scientists and Engineers
• The chemist's companion guide to patent law
• Patents for Chemicals, Pharmaceuticals, and Biotechnology : Fundamentals of Global Law, Practice, and Strategy
• Patent applications : a tool for identifying advances in polymer chemistry R & D