Inventor · disambiguated record
Craig A. Willkens
Also filed as: WILLKENS CRAIG · WILLKENS CRAIG A · WILLKENS CRAIG ANDREW
27 granted patents·7 pending applications·825 citations·filing 1986–2021
97Inventor score
Files withSAINT GOBAIN CERAMICS11SAINT GOBAIN NORTON IND CERAMI11NORTON CO5SPECIALIZED COMPONENT PARTS LTD INC3HANAGAN MICHAEL J1
Top patents by PatentIndex Score
34 records- 0197US5514630AComposition for small ceramic ignitersSAINT GOBAIN NORTON IND CERAMI·Filed 1994·Granted May 7, 1996·142 cites·15 claims
- 0292US5759481ASilicon nitride having a high tensile strengthSAINT GOBAIN NORTON IND CERAMI·Filed 1996·Granted Jun 2, 1998·116 cites·1 claims
- 0392US5061416AProcess for the manufacture of friable silicon nitride bodiesNORTON CO·Filed 1989·Granted Oct 29, 1991·55 cites·11 claims
- 0492US4970057ASilicon nitride vacuum furnace processNORTON CO·Filed 1990·Granted Nov 13, 1990·102 cites·27 claims
- 0587US5786565AMatch head ceramic igniter and method of using sameSAINT GOBAIN NORTON IND CERAMI·Filed 1997·Granted Jul 28, 1998·48 cites·24 claims
- 0686US4885199AFiber-reinforced silicon nitride composite ceramicsNORTON CO·Filed 1986·Granted Dec 5, 1989·42 cites·14 claims
- 0785US6278087B1Ceramic igniters and methods for using and producing sameSAINT GOBAIN NORTON IND CERAMI·Filed 2000·Granted Aug 21, 2001·16 cites·33 claims
- 0882US5229339APressure casting ceramic slurriesNORTON CO·Filed 1991·Granted Jul 20, 1993·34 cites·19 claims
- 0978US6562745B2Aging resistant, porous silicon Carbide ceramic igniterSAINT GOBAIN CERAMICS·Filed 2001·Granted May 13, 2003·15 cites·12 claims
- 1075US6474492B2Multiple hot zone ignitersSAINT GOBAIN CERAMICS·Filed 2001·Granted Nov 5, 2002·15 cites·46 claims
- 1174US5892201AMethod of heating a stovetop range using a ceramic igniterSAINT GOBAIN NORTON IND CERAMI·Filed 1998·Granted Apr 6, 1999·30 cites·7 claims
- 1273US7329837B2Ceramic ignitersSAINT GOBAIN CERAMICS·Filed 2002·Granted Feb 12, 2008·9 cites·30 claims
- 1372US6028292ACeramic igniter having improved oxidation resistance, and method of using sameSAINT GOBAIN NORTON IND CERAMI·Filed 1998·Granted Feb 22, 2000·32 cites·28 claims
- 1471US5801361ACeramic igniter with hot zone thickness of 0.019 inches or lessSAINT GOBAIN NORTON IND CERAMI·Filed 1997·Granted Sep 1, 1998·29 cites·20 claims
- 1570US5571760ASilicon nitride having a high tensile strengthSAINT GOBAIN NORTON IND CERAMI·Filed 1994·Granted Nov 5, 1996·22 cites·18 claims
- 1669US2021348760A1Hot surface igniters and methods of making sameSPECIALIZED COMPONENT PARTS LTD INC·Filed 2021·Application pending·0 cites
- 1766US11098897B2Hot surface igniters and methods of making sameSPECIALIZED COMPONENT PARTS LTD INC·Filed 2018·Granted Aug 24, 2021·0 cites·19 claims
- 1864US9951952B2Hot surface igniters and methods of making sameSPECIALIZED COMPONENT PARTS LTD INC·Filed 2014·Granted Apr 24, 2018·1 cites·40 claims
- 1961US8193469B2Ceramic ignitersWILLKENS CRAIG A·Filed 2008·Granted Jun 5, 2012·3 cites·5 claims
- 2059US6989048B2Particulate filter for purifying exhaust gases of internal combustion engines comprising hot spot ceramic ignitorsSAINT GOBAIN CT RECHERCHES·Filed 2001·Granted Jan 24, 2006·14 cites·10 claims
- 2158US5785911AMethod of forming ceramic ignitersSAINT GOBAIN NORTON IND CERAMI·Filed 1995·Granted Jul 28, 1998·20 cites·31 claims
- 2256US5820789AHigh voltage ceramic igniterSAINT GOBAIN NORTON INDUSTRAIL·Filed 1995·Granted Oct 13, 1998·24 cites·22 claims
- 2355US6002107AMethod of heating a stovetop range using a continuously energized ceramic igniter having relight capabilitySAINT GOBAIN NORTON IND CERAMI·Filed 1999·Granted Dec 14, 1999·17 cites·11 claims
- 2452US6297183B1Aging resistant porous silicon carbide ceramic igniterSAINT GOBAIN CERAMICS·Filed 1999·Granted Oct 2, 2001·10 cites·12 claims
- 2551US2010035747A1Partially stabilized zirconia materialsSAINT GOBAIN CERAMICS·Filed 2009·Application pending·0 cites
- 2649US5004544AReaction bonded silicon nitride filtration membranesNORTON CO·Filed 1989·Granted Apr 2, 1991·13 cites·23 claims
- 2747US2007295709A1Ceramic heating elementsSAINT GOBAIN CERAMICS·Filed 2007·Application pending·0 cites
- 2847US2008145672A1Injection molding of ceramic elementsSAINT GOBAIN CERAMICS·Filed 2007·Application pending·0 cites
- 2946US2008116192A1Injection molding of ceramic elementsSAINT GOBAIN CERAMICS·Filed 2007·Application pending·0 cites
- 3045US6582629B1Compositions for ceramic ignitersSAINT GOBAIN CERAMICS·Filed 1999·Granted Jun 24, 2003·10 cites·19 claims
- 3143US5510304ACoarse reaction bonded silicon nitrideSAINT GOBAIN NORTON IND CERAMI·Filed 1994·Granted Apr 23, 1996·6 cites·21 claims
- 3241US2006201925A1Ceramic ignitersSAINT GOBAIN CERAMICS·Filed 2005·Application pending·0 cites
- 3338US7195722B2Compositions for ceramic ignitersSAINT GOBAIN CERAMICS·Filed 2003·Granted Mar 27, 2007·0 cites·41 claims
- 3436US2011253696A1Ceramic Heating DeviceHANAGAN MICHAEL J·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →