Chemical Patents Plus from
Chemical Abstracts Service
http://casweb.cas.org/chempatplus/
Chemical Patents Plus offers the full text for all the patents issued
by the U.S. Patent and Trademark Office from 1974 to the present, including
partial coverage from 1971-1973. Complete patent page images are available
for patents issued from 1 January 1993.
Derwent
http://www.derwent.co.uk/
Derwent, a leading specialist in scientific, technical and patent information
has, for over 40 years, provided vital information to companies and research
institutes across the world.
DIALOG
http://www.dialog.com/info/home/
The merger of M.A.I.D and Knight-Ridder Information has created the
world's largest online information company, The Dialog Corporation.
IFI Plenum Corporation
http://www.ifiplenum.com/
Produces the CLAIMS family of U.S. Patent of U.S. Patent databases
which contain the most complete, most accurate, and most comprehensive
coverage of U.S. Patents available in electronic form.
Lexis-Nexis
http://www.lexis-nexis.com/
The world's leading source of online legal, news and business information
including federal, state and foreign case law, statutes and regulations,
legal treatises, law reviews, more than 4,200 news sources, public records,
profiles of thousands of public and private companies, and much more. Includes
full-text of U.S. Patents from mid-1970's, patent caselaw and administrative
decisions, patent statutory and regulatory materials, and patent news and
publications.
MicroPatent
http://www.micropat.com/
Micropatent is dedicated to making patent and trademark information
an accessible and effective business goal. US, EP and PCT patents downloaded
with images. U.S. trademarks from 1984.
Questel-Orbit
http://www.questel.orbit.com/patents/welcome.html
Questel-Orbit is an international online information company specializing
in patent, trademark, scientific, chemical, business and news information
STN
http://www.cas.org/
STN International (the Scientific and Technical Information Network)
is an online search service that provides accurate, up-to-date, specific
information from over 200 scientific, technical, business, and patent databases.
Last Modified: July 02, 1999
© Stanford University Libraries/Academic Information
Resources