The Patent Finder

Technical Development Consultants, Inc.

Also on record
Records under this name other than the patents Technical Development Consultants, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 1 patents it holds.

Back to Technical Development Consultants, Inc.

PatentTitleStatus Expires Confidence
US 7,091,830Subterranean Two-Wire Power and Communications Network
Formerly held
Term ended
Term ended Mar 23, 2025 · High confidence
Term endedTerm ended Mar 23, 2025High confidence
US 6,657,443Absolute-reading soil moisture and conductivity sensor
Term ended
Term ended Sep 4, 2021 · From the USPTO record
Term endedTerm ended Sep 4, 2021From the USPTO record
US 6,831,468Method and apparatus for determining moisture content and conductivity
Term ended
Term ended Sep 4, 2021 · From the USPTO record
Term endedTerm ended Sep 4, 2021From the USPTO record
US 7,562,832Two-conductor moisture activated switch
Lapsed on the fee record
Ended Jul 21, 2017 · From the USPTO record
Lapsed on the fee recordEnded Jul 21, 2017From the USPTO record
US 8,285,503Balanced two-conductor time domain reflectometer
Lapsed on the fee record
Ended Oct 9, 2016 · From the USPTO record
Lapsed on the fee recordEnded Oct 9, 2016From the USPTO record
US 7,068,051Permittivity monitor uses ultra wide band transmission
Lapsed on the fee record
Ended Jun 27, 2014 · From the USPTO record
Lapsed on the fee recordEnded Jun 27, 2014From the USPTO record
US 4,091,958Filler cap assembly
Term ended
Term ended no later than May 30, 1998 · Low confidence
Term endedTerm ended no later than May 30, 1998Low confidence
US 4,219,805Lubricating oil debris monitoring system
Term ended
Term ended no later than Aug 26, 2000 · Low confidence
Term endedTerm ended no later than Aug 26, 2000Low confidence
US 4,234,775Microwave drying for continuously moving webs
Term ended
Term ended no later than Nov 18, 2000 · Low confidence
Term endedTerm ended no later than Nov 18, 2000Low confidence
US 4,282,016Gas and failure particle separator system
Term ended
Term ended no later than Aug 4, 2001 · Low confidence
Term endedTerm ended no later than Aug 4, 2001Low confidence
10 of 15 patents shown.
Pro members see all 15.
Pro members: see all 15 patents
The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited