Inventor · disambiguated record
David T. Llewellyn
Also filed as: LLEWELLYN DAVID · LLEWELLYN DAVID T
11 granted patents·1 pending application·45 citations·filing 1986–2025
88Inventor score
Top patents by PatentIndex Score
12 records- 0189US11524215B2Bat system with performance limiting structure and methods of making sameMIZUNO KK·Filed 2021·Granted Dec 13, 2022·3 cites·20 claims
- 0270US2025367522A1Bat system with performance limiting structure and methods of making sameMIZUNO KK·Filed 2025·Application pending·0 cites
- 0368US10967235B2Bat system with performance limiting structure and methods of making sameMIZUNO KK·Filed 2019·Granted Apr 6, 2021·2 cites·17 claims
- 0460US12390706B2Bat system with performance limiting structure and methods of making sameMIZUNO KK·Filed 2022·Granted Aug 19, 2025·0 cites·20 claims
- 0546US4993144AMethod of making a cyclable electrical switch constructionROBERTSHAW CONTROLS CO·Filed 1989·Granted Feb 19, 1991·7 cites·5 claims
- 0646US4883983ASwitching system for plural load circuitROBERTSHAW CONTROLS CO·Filed 1988·Granted Nov 28, 1989·7 cites·18 claims
- 0745US5198632APressure operated switch construction and method of making the sameROBERTSHAW CONTROLS CO·Filed 1992·Granted Mar 30, 1993·7 cites·6 claims
- 0839US5140742AMethod of making a pressure operated switchROBERTSHAW CONTROLS CO·Filed 1991·Granted Aug 25, 1992·5 cites·9 claims
- 0937US4696204AWater level control device and method of making the sameROBERTSHAW CONTROLS CO·Filed 1986·Granted Sep 29, 1987·6 cites·13 claims
- 1036US5136129APressure operated switch construction and method of makingROBERTSHAW CONTROLS CO·Filed 1990·Granted Aug 4, 1992·4 cites·3 claims
- 1132US5310970APressure operated switch construction and method of making the sameROBERTSHAW CONTROLS CO·Filed 1992·Granted May 10, 1994·3 cites·4 claims
- 1229US4800633AMethod of making a water level control deviceROBERTSHAW CONTROLS CO·Filed 1987·Granted Jan 31, 1989·1 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →