David B. Todd

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Princeton, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of preparing thermoplastic foams using a gaseous blowing agent
- Patent number 5,707,573
- Issue date Jan 13, 1998
- Joseph A. Biesenberger
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Back mix drag-flow apparatus
- Patent number 5,372,418
- Issue date Dec 13, 1994
- Polymer Processing Institute
- Joseph A. Biesenberger
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Devolatilizing and/or processing systems and methods
- Patent number 5,306,452
- Issue date Apr 26, 1994
- APV Chemical Machinery Inc.
- David B. Todd
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL