William J. Derkach

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Lewisville, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Product package having reliable openability
- Patent number 6,203,867
- Issue date Mar 20, 2001
- Recot, Inc.
- William J. Derkach
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Product package having reliable openability
- Patent number 5,829,227
- Issue date Nov 3, 1998
- Recot, Inc.
- William J. Derkach
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Product package having reliable openability
- Patent number 5,689,935
- Issue date Nov 25, 1997
- Recot, Inc.
- William J. Derkach
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of forming packaging compositions
- Patent number 5,378,414
- Issue date Jan 3, 1995
- Recot, Inc.
- William J. Derkach
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL