Inventor · disambiguated record
Donald K. Simmons
Also filed as: SIMMONS DONALD K · SIMMONS JR DONALD K
10 granted patents·8 pending applications·32 citations·filing 2001–2024
85Inventor score
Top patents by PatentIndex Score
18 records- 0187US2025105340A1Membrane made of a blend of uhmw polyolefinsCELGARD LLC·Filed 2024·Application pending·0 cites
- 0286US7790320B2Battery separator with Z-direction stabilityCELGARD LLC·Filed 2007·Granted Sep 7, 2010·8 cites·3 claims
- 0374US12166166B2Membrane made of a blend of UHMW polyolefinsCELGARD LLC·Filed 2020·Granted Dec 10, 2024·0 cites·8 claims
- 0472US9908317B2Multilayer battery separatorsCALL RONALD W·Filed 2007·Granted Mar 6, 2018·1 cites·24 claims
- 0572US6692867B2Battery separator-pin removalCELGARD INC·Filed 2001·Granted Feb 17, 2004·14 cites·20 claims
- 0671US10859243B2Modular recessed light systemPATHWAY LIGHTING PRODUCTS INC·Filed 2018·Granted Dec 8, 2020·5 cites·20 claims
- 0765US2018134024A1Multilayer battery separatorsCELGARD LLC·Filed 2018·Application pending·0 cites
- 0864US10790491B2Membrane made of a blend of UHMW polyolefinsCELGARD LLC·Filed 2015·Granted Sep 29, 2020·0 cites·17 claims
- 0961US6921608B2Battery separatorCELGARD INC·Filed 2002·Granted Jul 26, 2005·4 cites·13 claims
- 1052US10615388B2Membrane made of a blend of UHMW polyolefinsSIMMONS DONALD K·Filed 2006·Granted Apr 7, 2020·0 cites·18 claims
- 1147US10995917B2Hub based lighting systemNOWAK DAVID ROBERT·Filed 2020·Granted May 4, 2021·0 cites·24 claims
- 1247US9570727B2Battery separator with Z-direction stabilityZHANG ZHENGMING·Filed 2005·Granted Feb 14, 2017·0 cites·7 claims
- 1347US2006088769A1Battery separator with Z-direction stabilityCELGARD LLC·Filed 2004·Application pending·0 cites
- 1445US2002136945A1Multilayer battery separatorsFiled 2002·Application pending·0 cites
- 1543US2005031941A1Explosion-proof separator for Li-ion secondary batteriesCELGARD INC·Filed 2003·Application pending·0 cites
- 1642US2004086782A1Explosion-proof separator for Li-ion secondary batteriesCELGARD INC·Filed 2002·Application pending·0 cites
- 1738US2005202163A1Method of making a composite microporous membraneCELGARD INC·Filed 2004·Application pending·0 cites
- 1838US2003104236A1Diffusion membraneCELGARD INC·Filed 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Donald K. Simmons files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →