Inventor · disambiguated record
Roger L. Langer
Also filed as: LANGER ROGER L
21 granted patents·1,580 citations·filing 1976–2013
97Inventor score
Top patents by PatentIndex Score
21 records- 0199US5250269ACatalytic converter having a metallic monolith mounted by a heat-insulating mat of refractory ceramic fibersMINNESOTA MINING & MFG·Filed 1992·Granted Oct 5, 1993·229 cites·13 claims
- 0298US6051193AMultilayer intumescent sheet3M INNOVATIVE PROPERTIES CO·Filed 1997·Granted Apr 18, 2000·155 cites·21 claims
- 0398US4305992AIntumescent sheet materialMINNESOTA MINING & MFG·Filed 1979·Granted Dec 15, 1981·160 cites·7 claims
- 0496US4048363AOffset laminated intumescent mounting matMINNESOTA MINING & MFG·Filed 1976·Granted Sep 13, 1977·94 cites·3 claims
- 0595US6458418B2Method of making multilayer sheets for firestops or mounting mats3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Oct 1, 2002·93 cites·23 claims
- 0695US5523059AIntumescent sheet material with glass fibersMINNESOTA MINING & MFG·Filed 1995·Granted Jun 4, 1996·120 cites·17 claims
- 0795US4273879AIntumescent fire retardant compositesMINNESOTA MINING & MFG·Filed 1979·Granted Jun 16, 1981·82 cites·4 claims
- 0894US6923942B1Compressible preform insulating liner3M INNOVATIVE PROPERTIES CO·Filed 1997·Granted Aug 2, 2005·77 cites·19 claims
- 0994US5869010AIntumescent sheet materialMINNESOTA MINING & MFG·Filed 1997·Granted Feb 9, 1999·96 cites·20 claims
- 1094US4600634AFlexible fibrous endothermic sheet material for fire protectionMINNESOTA MINING & MFG·Filed 1985·Granted Jul 15, 1986·108 cites·22 claims
- 1194US4385135AIntumescent sheet material containing low density fillersMINNESOTA MINING & MFG·Filed 1982·Granted May 24, 1983·119 cites·5 claims
- 1293US5254410APartially dehydrated vermiculite flakes and method of making sameMINNESOTA MINING & MFG·Filed 1991·Granted Oct 19, 1993·86 cites·17 claims
- 1387US6224835B1Multilayer intumescent sheet3M INNOVATIVE PROPERTIES CO·Filed 1997·Granted May 1, 2001·48 cites·15 claims
- 1481US8182751B2Self-supporting insulating end cone liner and pollution control deviceSHIRK RYAN C·Filed 2010·Granted May 22, 2012·4 cites·20 claims
- 1578US6365267B1Multilayer intumescent sheet and pollution control device3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Apr 2, 2002·31 cites·14 claims
- 1673US5175197AWater-based intumescent fire barrier caulkMINNESOTA MINING & MFG·Filed 1990·Granted Dec 29, 1992·31 cites·19 claims
- 1772US8741200B2Method of making self-supporting insulating end cone liners and pollution control devices3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Jun 3, 2014·1 cites·20 claims
- 1866US8632727B2Self-supporting insulating end cone liner and pollution control deviceSHIRK RYAN C·Filed 2012·Granted Jan 21, 2014·1 cites·20 claims
- 1965US5059637AEndothermic fire protective materialMINNESOTA MINING & MFG·Filed 1991·Granted Oct 22, 1991·25 cites·5 claims
- 2056US7758795B2Method of making a polluction control device and a self-supporting insulating end cone3M INNOVATIVE PROPERTIES CO·Filed 2002·Granted Jul 20, 2010·5 cites·18 claims
- 2146US6475340B1Solid phase extraction membrane3M INNOVATIVE PROPERTIES CO·Filed 1996·Granted Nov 5, 2002·15 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →