Patent Database



Title Details
The WWW Virtual Library http://vlib.org/
UPenn Digital Library http://onlinebooks.library.upenn.edu/lists.html
Wileyopenaccess journals http://www.wileyopenaccess.com/view/journals.html
Deutschen patent- und Markenamtes https://depatisnet.dpma.de
Indian Patent Database http://www.indianpatents.org.in/db/db.htm
European Patent http://worldwide.espacenet.com/
Google Patent Search http://www.google.com/patents/
U. S. Patent and Trademark Office http://www.uspto.gov/patents/index.jsp