The Patent Finder

Analytical Technology, Inc.

Also on record
Records under this name other than patents Analytical Technology, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.

Back to Analytical Technology, Inc.

PatentTitleStatus Expires Confidence
US 6,121,823Electrical circuit for sensors requiring a variety of bias voltages
Lapsed on the fee record
Ended Sep 19, 2012 · From the USPTO record
Lapsed on the fee recordEnded Sep 19, 2012From the USPTO record
US 4,131,428Method of adjusting pH
Formerly held
Term ended
Term ended no later than Dec 26, 1998 · Low confidence
Term endedTerm ended no later than Dec 26, 1998Low confidence
US 4,146,604Differential counting of leukocytes and other cells
Formerly held
Term ended
Term ended no later than Mar 27, 1999 · Low confidence
Term endedTerm ended no later than Mar 27, 1999Low confidence
US 4,158,772Device for collecting and analyzing matrix-isolated samples
Formerly held
Term ended
Term ended no later than Jun 19, 1999 · Low confidence
Term endedTerm ended no later than Jun 19, 1999Low confidence
US 4,166,021Reference electrode
Formerly held
Term ended
Term ended no later than Aug 28, 1999 · Low confidence
Term endedTerm ended no later than Aug 28, 1999Low confidence
US 4,224,114Method and apparatus for detecting zinc ion activity
Formerly held
Term ended
Term ended no later than Sep 23, 2000 · Low confidence
Term endedTerm ended no later than Sep 23, 2000Low confidence
US 4,251,218Method of adjusting pH
Formerly held
Term ended
Term ended no later than Feb 17, 2001 · Low confidence
Term endedTerm ended no later than Feb 17, 2001Low confidence
US 4,263,104Electrochemical monitoring
Formerly held
Term ended
Term ended no later than Apr 21, 2001 · Low confidence
Term endedTerm ended no later than Apr 21, 2001Low confidence
US 4,267,023Chemically integrating dosimeter and gas analysis methods
Formerly held
Term ended
Term ended no later than May 12, 2001 · Low confidence
Term endedTerm ended no later than May 12, 2001Low confidence
US 4,321,544Method and improved apparatus for obtaining temperature-corrected readings of ion levels and readings of solution temperature
Formerly held
Term ended
Term ended no later than Mar 23, 2002 · Low confidence
Term endedTerm ended no later than Mar 23, 2002Low confidence
10 of 29 patents shown.
Pro members see all 29.
Pro members: see all 29 patents
The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited