CASSIS/BIB : It provides bibliographic information of all US patents issued since 1969. Information includes the patent number,year of issue,the State/country of the first listed inventor's residence, the asignee at the time of issue, patent title,status (withdrawn or expired failure to pay maintenance fees) and the current US classification for patent. The most recent patent abstract for all patent types (except Design patents) upto 3 years are also provided.
The database is created and distributed by United States Patent and Trademark Office(USPTO).