John J. Keegan Jr.

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Wilmington, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for drawing plastic film in a tenter frame
- Patent number 5,072,493
- Issue date Dec 17, 1991
- E. I. Du Pont de Nemours and Company
- William J. Hommes
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of drawing plastic film in a tenter frame
- Patent number 5,051,225
- Issue date Sep 24, 1991
- E. I. Du Pont de Nemours and Company
- William J. Hommes
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
System for using synchronous secondaries of a linear motor to biaxi...
- Patent number 4,853,602
- Issue date Aug 1, 1989
- E. I. DuPont de Nemours and Company
- William J. Hommes
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Linear motor propulsion system
- Patent number 4,825,111
- Issue date Apr 25, 1989
- E. I. Du Pont de Nemours and Company
- William J. Hommes
- B60 - VEHICLES IN GENERAL
Information Patent Grant
System useful for controlling multiple synchronous secondaries of a...
- Patent number 4,675,582
- Issue date Jun 23, 1987
- E. I. Du Pont de Nemours and Company
- William J. Hommes
- B60 - VEHICLES IN GENERAL