Please note: At this site, access to some of the following resources may be restricted to faculty, staff, and students of The University of Iowa.
U.S. Patents Index (U.S. Patent and Trademark Office)
US PTO Patent Classification Home Page
US PTO Alphabetical Index to Patent Classification
US Patent Class Numbers and Titles
U.S. Patent and Trademark Office Home Page
esp@cenet (European and PCT patent applications including images of front page data)
ANSI via NSSN: National Resource for Global Standards
ASTM (American Society for Testing and Materials) Index Look for "Standards Search" link in upper left-hand corner of ASTM page
ILI Standards InfoBase (index to standards)
ISO Catalog (International Organization for Standardization)
SAE (Society of Automotive Engineers)
UL Standards InfoNet--Standards Catalog (Underwriters Laboratories)
ASTM Standards - Full text online (Click on "Specs & Standards")
Links to Standards and Codes (links provided by Leshner & Associates, Inc.)