United States Patent and Trademark Office (USPTO)
The USPTO offers web access to bibliographic and full-text patent databases. These databases provide full-text of patents from 1976 to the present and full page images from 1790 to the present.
A patent is a property right granted by the Government of the United States of America to an inventor "to exclude others from making, using, offering for sale, or selling the invention throughout the United States or importing the invention into the United States" for a limited time in exchange for public disclosure of the invention when the patent is granted.
New to Patent Searching? See this important information about searching for patents:
How to Conduct a Preliminary U.S. Patent Search: A Step by Step Strategy - Web Based Tutorial (38 minutes)
The Seven Step Strategy - Outlines a suggested procedure for patent searching
Other patent sources:
PATENTSCOPE: Using PATENTSCOPE you can search 36 million patent documents including 2.2 million published international patent applications (PCT).
Given a patent number, pat2pdf.org will return a free, pdf formated version of the patent.
The Google Patent Search covers the entire collection of patents made available by the USPTO—from patents issued in the 1790s to present.
The Intellectual Property Digital Library- WIPO GOLD-IP Reference Resource - See 'Three Ways to Strengthen Your Design Patent Portfolio in 2020' and 'Patent Strategies for Drug-Device Combination Products'.
WIPO GOLD is a free public resource which provides a one-stop gateway to WIPO’s global collections of searchable IP data. It aims to facilitate universal access to IP information.
See 'Office of Applied Innovation', Looking for a technology or invention to commercialize? Drexel currently has hundreds of technologies in many industry categories for your browsing. See also Drexel's 'Intellectual Property Policy'.
Nanodot: the original nanotechnology weblog from the Foresight Institute.
Nanotechnology related initiatives