Sung W. Cha

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Roxbury, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for microcellular polymer extrusion
- Patent number 6,884,377
- Issue date Apr 26, 2005
- Trexel, Inc.
- Theodore A. Burnham
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method and apparatus for microcellular polymer extrusion
- Patent number 6,284,810
- Issue date Sep 4, 2001
- Trexel, Inc.
- Theodore A. Burnham
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Supermicrocellular foamed materials
- Patent number 5,334,356
- Issue date Aug 2, 1994
- Massachusetts Institute of Technology
- Daniel F. Baldwin
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Microcellular thermoplastic foamed with supercritical fluid
- Patent number 5,158,986
- Issue date Oct 27, 1992
- Massachusetts Institute of Technology
- Sung W. Cha
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL