Inventor · disambiguated record
Granville J. Hahn
Also filed as: HAHN GRANVILLE · HAHN GRANVILLE J
31 granted patents·779 citations·filing 1973–1989
98Inventor score
Top patents by PatentIndex Score
31 records- 0198US4552791APlastic container with decreased gas permeabilityCOSDEN TECHNOLOGY·Filed 1983·Granted Nov 12, 1985·145 cites·15 claims
- 0292US4839969ADrying method and apparatusPERMIAN RES CORP·Filed 1988·Granted Jun 20, 1989·51 cites·10 claims
- 0387US4713271AFoamed polymer tubingCOSDEN TECHNOLOGY·Filed 1983·Granted Dec 15, 1987·56 cites·12 claims
- 0486US4478874AMethods for improving the gas barrier properties of polymeric containersCOSDEN TECHNOLOGY·Filed 1983·Granted Oct 23, 1984·42 cites·8 claims
- 0584US4974336ADrying methodPERMIAN RES CORP·Filed 1989·Granted Dec 4, 1990·33 cites·21 claims
- 0682US4744478APlastic closure with unitarily molded, foamed sealing layerPERMIAN RES CORP·Filed 1986·Granted May 17, 1988·49 cites·12 claims
- 0778US4621678AHeat exchanger apparatus for extruding thermoplastic compositionsCOSDEN TECHNOLOGY·Filed 1984·Granted Nov 11, 1986·40 cites·5 claims
- 0872US4548570AExtrusion apparatus for producing thermoplastic pipeCOSDEN TECHNOLOGY·Filed 1983·Granted Oct 22, 1985·29 cites·4 claims
- 0971US4496408AMethod for producing biaxially oriented hollow articlesCOSDEN TECHNOLOGY·Filed 1983·Granted Jan 29, 1985·29 cites·20 claims
- 1071US4443397AMultiple-layered sheeting apparatus and process thereforCOSDEN TECHNOLOGY·Filed 1982·Granted Apr 17, 1984·28 cites·17 claims
- 1164US3939236AMethod for blow molding foamed walled plastic open mouthed containersCOSDEN OIL & CHEM CO·Filed 1973·Granted Feb 17, 1976·20 cites·4 claims
- 1262US4872573APlastic closure with barrier coatingPERMIAN RES CORP·Filed 1988·Granted Oct 10, 1989·25 cites·11 claims
- 1359US4451586AProcess and apparatus for manufacturing flame retardant flexible foamed articlesCOSDEN TECHNOLOGY·Filed 1982·Granted May 29, 1984·13 cites·6 claims
- 1458US4483812AValve plate and feedblock design for co-extrusion apparatus and co-extrusion process using sameCOSDEN TECHNOLOGY·Filed 1983·Granted Nov 20, 1984·19 cites·13 claims
- 1558US4028034AMethod and apparatus for blow molding plasticCOSDEN OIL & CHEM CO·Filed 1975·Granted Jun 7, 1977·16 cites·3 claims
- 1656US4501543ARotary extruderCOSDEN TECHNOLOGY·Filed 1983·Granted Feb 26, 1985·17 cites·12 claims
- 1755US4483669AMultiple-layered sheeting apparatusCOSDEN TECHNOLOGY·Filed 1983·Granted Nov 20, 1984·17 cites·11 claims
- 1854US4507071ACoextrusion apparatus for producing multiple layered thermoplastic pipeCOSDEN TECHNOLOGY·Filed 1983·Granted Mar 26, 1985·16 cites·7 claims
- 1953US4990233AMethod for retarding mineral buildup in downhole pumpsPERMIAN RES CORP·Filed 1985·Granted Feb 5, 1991·14 cites·6 claims
- 2052US4499041ACoextrusion process for producing multiple layered thermoplastic pipeCOSDEN TECHNOLOGY·Filed 1983·Granted Feb 12, 1985·15 cites·5 claims
- 2150US4512943AExtrusion process for producing thermoplastic pipeCOSDEN TECHNOLOGY·Filed 1983·Granted Apr 23, 1985·13 cites·2 claims
- 2248US4526736AProcess and apparatus for manufacturing flexible foamed articlesCOSDEN TECHNOLOGY·Filed 1982·Granted Jul 2, 1985·11 cites·10 claims
- 2348US4469651AProcess for extruding thermoplastic compositionsCOSDEN TECHNOLOGY·Filed 1983·Granted Sep 4, 1984·12 cites·22 claims
- 2446US4887907ARotary extruder with internally cooled rotorPERMIAN RES CORP·Filed 1989·Granted Dec 19, 1989·13 cites·3 claims
- 2545US4611987AApparatus for forming multilayer thermoplastic resin extrusionsCOSDEN TECHNOLOGY·Filed 1984·Granted Sep 16, 1986·12 cites·1 claims
- 2643US4879138AComposition for plastic article with unitarily molded foam layerPERMIAN RES CORP·Filed 1989·Granted Nov 7, 1989·17 cites·13 claims
- 2741US4813863ARotary extruder with a gear pumpPERMIAN RES CORP·Filed 1986·Granted Mar 21, 1989·10 cites·2 claims
- 2832US5033861ARotary extruder with internally heated rotorPERMIAN RES CORP·Filed 1989·Granted Jul 23, 1991·3 cites·1 claims
- 2931US4866100AComposition for plastic article with unitarily molded foam layerPERMIAN RES CORP·Filed 1988·Granted Sep 12, 1989·8 cites·12 claims
- 3030US4512395AMultiple heat exchanger distribution apparatusCOSDEN TECHNOLOGY·Filed 1983·Granted Apr 23, 1985·1 cites·14 claims
- 3127US5045252AMethod and apparatus for controlling rotary extruderPERMIAN RES CORP·Filed 1989·Granted Sep 3, 1991·5 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →