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Patent applications and USPTO patent grants for Keller; Lajos E..The latest application filed is for "uniaxially shrinkable biaxially oriented polypropylene film and its method of preparation".
Patent | Date |
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Uniaxially shrinkable biaxially oriented polypropylene film and its method of preparation Grant 5,691,043 - Keller , et al. November 25, 1 | 1997-11-25 |
Multi-layer opaque film structures of reduced surface friction and process for producing same Grant 5,264,277 - Frognet , et al. November 23, 1 | 1993-11-23 |
High opacity film and method thereof Grant 5,176,954 - Keller , et al. January 5, 1 | 1993-01-05 |
Multi-layer high opacity film structures Grant 5,091,236 - Keller , et al. February 25, 1 | 1992-02-25 |
Oriented polypropylene film structure Grant 5,019,447 - Keller May 28, 1 | 1991-05-28 |
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