Research Guides: Patents: Databases

Patent Databases

USPTO Patent Public Search
The Patent Public Search tool is a new web-based patent search application that will replace internal legacy search tools PubEast and PubWest and external legacy search tools PatFT and AppFT.
USPTO Patent Database
The main database of the USPTO.
Google Patents
The Google site for patent searching.
Free Patents Online
A good free patent information site.

SciFinder-n This link opens in a new window
- This link opens in a new window
Chemistry database that contains many patents both foreign and from the United States.
Databases included: CAplus (Chemical Abstracts), REGISTRY, CASREACT (chemical reactions database), CHEMCATS (commercially available chemical information), CHEMLIST (regulated chemical information), and MEDLINE (biomedical literature worldwide).
Coverage:
- CAplus: 1907 to date, plus over 44,000 records for journal articles dated before 1907
- MEDLINE: 1950 to date
- REGISTRY: 1957 to date, plus many substances dating back to 1907
- CASREACT: 1840 to date
Eight Centuries This link opens in a new window
- This link opens in a new window
This database contains a computerized version of the Subject-Matter Index of Patents for Inventions Issued by the United States Patent Office from 1790-1873, Inclusive. This is a licensed product and only available to members of the University of Delaware community.