Espacenet
Submitted by operator on Thu, 16/03/2017 - 14:21Provided by the European Patent Office, Espacenet offers more than 90 million patent documents from the 19th century right up to today.
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Chemical and Environmental Engineering
IP Lib
Submitted by operator on Thu, 16/03/2017 - 14:15Provided by The National Office of Intellectual Property of Vietnam. In this web site you can search information on patent, industrial design, trade mark which is published un-examined or is granted.
VN DigiPat
Submitted by operator on Thu, 16/03/2017 - 14:12Provided by The National Office of Intellectual Property of Vietnam, Digipat is a digital library for patents. The search engine belongs to a project that aims to provide the public with fulltexts of national patents.
Google Patents
Submitted by operator on Sat, 19/12/2015 - 14:58Google Patents includes over 87 million patent publications from 17 patent offices around the world, as well as many more technical documents and books indexed in Google Scholar and Google Books