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National Technical Information Service
The National Technical Information Service serves as the largest central resource for government-funded scientific, technical, engineering, and business related information available today.
NTRS: NASA Technical Reports Server
The NTRS is a valuable resource for students, educators, researchers, and the public for access to NASA's current and historical technical literature since it was first released in 1994. NTRS provides access to approximately 500K aerospace related citations, 90K full-text online documents, and 111K images and videos.
The FreePatentsOnline search engine is one of the most powerful, fastest and easiest patent search engines on the web.
Google Patents Search
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Patent Abstracts of Japan Database
The Industrial Property Digital Library (IPDL) offers the public access to IP Gazettes of the JPO free of charge through the Internet.
At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Join our Patent Community and create your profile, interact with members, post articles, and more.
Patent search and analysis.
Patent Lens is a worldwide, open-access, free full-text patent informatics resource.