William A. Fintel

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Lewes, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for introducing additives into an extruder
- Patent number 5,439,623
- Issue date Aug 8, 1995
- E. I. Du Pont de Nemours and Company
- William A. Fintel
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for metering color concentrates to thermoplastic polymer melts
- Patent number 4,919,872
- Issue date Apr 24, 1990
- E. I. Du Pont de Nemours and Company
- William A. Fintel
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for metering color concentrates to thermoplastic polymer melts
- Patent number 4,848,915
- Issue date Jul 18, 1989
- E. I. Du Pont de Nemours and Company
- William A. Fintel
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL