What databases are available in the United States to search for company patents?

US authorized patent search: Users can search all kinds of US authorized patent documents since 3 1 search portal 1976, including full-text search of coded full-text patent specifications; The system can also be used by the public to search various American authorized patents since 1790 from two number retrieval portals and browse various scanned images of American authorized patents. Collection scope: all authorized patent documents published by the US Patent and Trademark Office from 1790 to the last week. The types of patent documents included in this retrieval system include: utility model, namely, patent authorization, design patent, plant patent, re-announcement patent, defense announcement and legally registered invention (SIR for short). Among them, the data from 1790 to 1975 are full maps, and the searchable data are only the patent number and the US patent classification number; The data after 1976 65438+ 10/month 1 include not only the full text of the image, but also the searchable basic description items, abstracts and the full text data of authorized patents (including specifications and claims). Search of American patent application disclosure: Users can search the published documents of American patent application from 23 search portals since March 1 year, and provide coded and scanned images of the full-text American patent application disclosure specification for the public to search and browse the full-text American patent application disclosure. The scope of collection includes: basic descriptions, abstracts and coded full-text data of patent applications published from March/KOOC-0/2006 to May/KOOC-0/2006, as well as all image-based disclosure specifications of American patent applications.