Inventor · disambiguated record
Walter R. Harfmann
Also filed as: HARFMANN WALTER R · HARFMANN WALTER RUDOLF
11 granted patents·4 pending applications·91 citations·filing 1996–2018
89Inventor score
Top patents by PatentIndex Score
15 records- 0165US5985190AMethod and system for forming low-density polymer foam articleGENPAK L L C·Filed 1998·Granted Nov 16, 1999·23 cites·18 claims
- 0264US6342173B1Method for producing polymer foam using a blowing agent combinationGENPAK L L C·Filed 2000·Granted Jan 29, 2002·6 cites·8 claims
- 0355US6602923B2Process for producing alkenyl aromatic foams having increased thermal insulation using cycloalkane blowing agent and foams produced therebyREEDY INTERNAT CORP·Filed 2001·Granted Aug 5, 2003·2 cites·8 claims
- 0453US11111350B2Method for production of low density polyester foam and articles made thereof utilizing low I.V. polyester feedstockHARFMANN WALTER R·Filed 2018·Granted Sep 7, 2021·0 cites·16 claims
- 0553US5679295AMethod for producing polyester foam using a blowing agent combinationGENPAK CORP·Filed 1996·Granted Oct 21, 1997·15 cites·7 claims
- 0652US6258863B1Process for producing alkenyl aromatic foams having increased thermal insulation using cycloalkane blowing agent and foams produced therebyREEDY INTERNAT CORP·Filed 1998·Granted Jul 10, 2001·12 cites·31 claims
- 0748US5681865AMethod for producing polyester foamGENPAK CORP·Filed 1996·Granted Oct 28, 1997·11 cites·7 claims
- 0847US2009029111A1Embossed low density polymeric foams and articles made thereofHARFMANN WALTER R·Filed 2008·Application pending·0 cites
- 0946US2003138515A1Polymeric foam sheet using ambient gas blowing agent via controlled expansionGENPAK LLC·Filed 2003·Application pending·0 cites
- 1045US2007293593A1Low density polylactic acid polymeric foam and articles made thereofHARFMANN WALTER R·Filed 2007·Application pending·0 cites
- 1144US6827888B2Polymeric foam sheet using ambient gas blowing agent via controlled expansionGENPAK LLC·Filed 2001·Granted Dec 7, 2004·0 cites·28 claims
- 1243US6273697B1System for forming low-density polymer foam articleGENPAK L L C·Filed 1999·Granted Aug 14, 2001·9 cites·12 claims
- 1343US2005070617A1Low density rigid polyamide foam and method for productionHARFMANN TECHNOLOGY INC·Filed 2003·Application pending·0 cites
- 1438US6063316AMethod for producing polymer foam using a blowing agent combinationGENPAK L L C·Filed 1998·Granted May 16, 2000·6 cites·2 claims
- 1537US6130261AMethod of recycling polyester foamGENPAK L L C·Filed 1997·Granted Oct 10, 2000·7 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →