Inventor · disambiguated record
Walter J. Schrenk
Also filed as: SCHRENK WALTER · SCHRENK WALTER J
38 granted patents·1 pending application·8,003 citations·filing 1974–2002
99Inventor score
Files withDOW CHEMICAL CO343M INNOVATIVE PROPERTIES CO2AGILENT TECHNOLOGIES INC1DOW CHEMICAL COMPNY1MINNESOTA MINING & MFG1
Top patents by PatentIndex Score
39 records- 0199US5269995ACoextrusion of multilayer articles using protective boundary layers and apparatus thereforDOW CHEMICAL CO·Filed 1992·Granted Dec 14, 1993·414 cites·18 claims
- 0299US5217794ALamellar polymeric bodyDOW CHEMICAL CO·Filed 1991·Granted Jun 8, 1993·375 cites·28 claims
- 0399US5122905ARelective polymeric bodyDOW CHEMICAL CO·Filed 1990·Granted Jun 16, 1992·381 cites·30 claims
- 0499US5103337AInfrared reflective optical interference filmDOW CHEMICAL CO·Filed 1990·Granted Apr 7, 1992·445 cites·20 claims
- 0598US5612820ABirefringent interference polarizerDOW CHEMICAL CO·Filed 1995·Granted Mar 18, 1997·414 cites·17 claims
- 0698US5486949ABirefringent interference polarizerDOW CHEMICAL CO·Filed 1990·Granted Jan 23, 1996·544 cites·11 claims
- 0798US5389324ALayer thickness gradient control in multilayer polymeric bodiesDOW CHEMICAL CO·Filed 1993·Granted Feb 14, 1995·426 cites·28 claims
- 0898US5316703AMethod of producing a lamellar polymeric bodyDOW CHEMICAL CO·Filed 1993·Granted May 31, 1994·326 cites·32 claims
- 0998US5126880APolymeric reflective bodies with multiple layer typesDOW CHEMICAL CO·Filed 1990·Granted Jun 30, 1992·228 cites·45 claims
- 1097US5568316AFormable reflective multilayer bodyDOW CHEMICAL CO·Filed 1995·Granted Oct 22, 1996·356 cites·9 claims
- 1197US5448404AFormable reflective multilayer bodyDOW CHEMICAL CO·Filed 1994·Granted Sep 5, 1995·404 cites·26 claims
- 1297US5360659ATwo component infrared reflecting filmDOW CHEMICAL CO·Filed 1993·Granted Nov 1, 1994·489 cites·33 claims
- 1397USRE34605EInfrared reflective optical interference filmDOW CHEMICAL CO·Filed 1992·Granted May 10, 1994·217 cites·21 claims
- 1497US5094793AMethods and apparatus for generating interfacial surfacesDOW CHEMICAL CO·Filed 1990·Granted Mar 10, 1992·313 cites·20 claims
- 1597US4937134AElastomeric optical interference filmsDOW CHEMICAL CO·Filed 1989·Granted Jun 26, 1990·251 cites·23 claims
- 1696US5628950AMethod and apparatus for producing multilayer plastic articlesDOW CHEMICAL CO·Filed 1994·Granted May 13, 1997·124 cites·1 claims
- 1796US5540978AAll-polymeric ultraviolet light reflecting filmDOW CHEMICAL COMPNY·Filed 1994·Granted Jul 30, 1996·251 cites·12 claims
- 1896US5278694AOptically dissimilar composition for polymeric reflective bodiesDOW CHEMICAL CO·Filed 1991·Granted Jan 11, 1994·184 cites·71 claims
- 1996US5233465AVisibly transparent infrared reflecting film with color maskingDOW CHEMICAL CO·Filed 1992·Granted Aug 3, 1993·183 cites·20 claims
- 2096US5202074AMethod for producing injection molded multilayer articlesDOW CHEMICAL CO·Filed 1991·Granted Apr 13, 1993·149 cites·14 claims
- 2195US5234729AMultilayer polymeric reflective bodies for decorative and security applicationsDOW CHEMICAL CO·Filed 1992·Granted Aug 10, 1993·107 cites·15 claims
- 2295US5094788AInterfacial surface generatorDOW CHEMICAL CO·Filed 1990·Granted Mar 10, 1992·352 cites·24 claims
- 2394US5262894AMulticomponent, multilayer polymeric reflective bodiesDOW CHEMICAL CO·Filed 1992·Granted Nov 16, 1993·130 cites·24 claims
- 2494US5149578AMultilayer film for tamper indication by use of optical interference reflectionDOW CHEMICAL CO·Filed 1991·Granted Sep 22, 1992·122 cites·17 claims
- 2594US5095210AMultilayer film indicator for determining the integrity or authenticity of an item and process for using sameDOW CHEMICAL CO·Filed 1990·Granted Mar 10, 1992·197 cites·21 claims
- 2693US3995763ABiaxially oriented thermoplastic container with or without molded tip peripheryDOW CHEMICAL CO·Filed 1975·Granted Dec 7, 1976·65 cites·14 claims
- 2791US3977153AContainer for food products and method for making sameDOW CHEMICAL CO·Filed 1974·Granted Aug 31, 1976·46 cites·9 claims
- 2891US3947204AScrapless forming of plastic articlesDOW CHEMICAL CO·Filed 1974·Granted Mar 30, 1976·52 cites·21 claims
- 2990US4806289AMethod of making a hollow light pipeDOW CHEMICAL CO·Filed 1987·Granted Feb 21, 1989·95 cites·8 claims
- 3090US4094947AMultilayer coextrusion process for producing selective reflectivityDOW CHEMICAL CO·Filed 1976·Granted Jun 13, 1978·89 cites·3 claims
- 3188US6583930B1Birefringent interference polarization3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Jun 24, 2003·60 cites·16 claims
- 3288US5380479AMethod and apparatus for producing multilayer plastic articlesDOW CHEMICAL CO·Filed 1992·Granted Jan 10, 1995·58 cites·5 claims
- 3386US5872653ABirefringent interference polarizerMINNESOTA MINING & MFG·Filed 1996·Granted Feb 16, 1999·54 cites·2 claims
- 3479US4005967AScrapless forming of plastic articlesDOW CHEMICAL CO·Filed 1976·Granted Feb 1, 1977·36 cites·4 claims
- 3576US5540878AMethod for producing blow molded multilayer plastic articlesDOW CHEMICAL CO·Filed 1994·Granted Jul 30, 1996·33 cites·9 claims
- 3662US4871487AMethod of making a polymeric optical waveguide by coextrusionDOW CHEMICAL CO·Filed 1987·Granted Oct 3, 1989·23 cites·10 claims
- 3748US7186382B2Microchip apparatusAGILENT TECHNOLOGIES INC·Filed 2002·Granted Mar 6, 2007·1 cites·19 claims
- 3839US4122138AMethod of preparing blown thermoplastic articles having multiaxial orientationDOW CHEMICAL CO·Filed 1975·Granted Oct 24, 1978·9 cites·6 claims
- 3938US2001046086A1Polymeric interference film3M INNOVATIVE PROPERTIES CO·Filed 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →