1
Sung W Cha, Nam P Suh, Daniel F Baldwin, Chul B Park: Microcellular thermoplastic foamed with supercritical fluid. Massachusetts Institute of Technology, Robert F O Connell, October 27, 1992: US05158986 (201 worldwide citation)

A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system having a pl ...


2
Daniel F Baldwin, Nam P Suh, Chul B Park, Sung W Cha: Supermicrocellular foamed materials. Massachusetts Institute of Technology, Robert F O Connell, August 2, 1994: US05334356 (131 worldwide citation)

A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system having a pl ...


3
Theodore A Burnham, Sung W Cha, Robert H Walat, Roland Y Kim, Jere R Anderson, James F Stevenson, Nam P Suh, Matthew Pallaver: Method and apparatus for microcellular polymer extrusion. Trexel, Wolf Greenfield & Sacks P C, September 4, 2001: US06284810 (63 worldwide citation)

Continuous polymeric extrusion nucleation systems and methods useful for making polymeric microcellular foamed materials, including crystalline and semi-crystalline polymeric microcellular materials, are provided. Pressure drop rate is an important feature in some embodiments, and the invention prov ...


4
Theodore A Burnham, Sung W Cha, Robert H Walat, Roland Y Kim, Jere R Anderson, James F Stevenson, Nam P Suh, Matthew Pallaver: Method and apparatus for microcellular polymer extrusion. Trexel, Wolf Greenfield & Sacks P C, April 26, 2005: US06884377 (60 worldwide citation)

Continuous polymeric extrusion nucleation systems and methods useful for making polymeric microcellular foamed materials, including crystalline and semi-crystalline polymeric microcellular materials, are provided. Pressure drop rate is an important feature in some embodiments, and the invention prov ...


5
David E Pierick, Jere R Anderson, Sung W Cha, Liqin Chen, James F Stevenson, Dana E Laing: Injection molding of polymeric material. Trexel, Wolf Greenfield & Sacks P C, April 26, 2005: US06884823 (50 worldwide citation)

Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection mol ...


6
Matthew Pallaver, Sung W Cha: Microcellular thermoplastic elastomeric structures. Trexel, Wolf Greenfield & Sacks P C, September 2, 2003: US06613811 (34 worldwide citation)

Microcellular thermoplastic elastomeric polymeric structures are provided. The articles have an average cell size of less than 100 &mgr;m and a compression set ranging from less than about 30% to less than about 5%, and a rebound value of at least 50%. The articles may be formed from a thermoplastic ...


7
Daniel F Baldwin, Nam P Suh, Chul B Park, Sung W Cha: Supermicrocellular foamed materials. Massachusetts Institute of Technology, Dike Bronstein Roberts and Cushman Intellectual Property Practice Group of Edwards & Angell, December 10, 2002: USRE037932

A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system having a pl ...


8
David E Pierick, Jere R Anderson, Sung W Cha, Liqin Chen, James F Stevenson, Dana E Laing: Injection molding of polymeric material. Trexel, Wolf Greenfield & Sacks PC, February 28, 2008: US20080050576-A1

Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection mol ...


9
David E Pierick, Jere R Anderson, Sung W Cha, Liqin Chen, James F Stevenson, Dana E Laing: Injection molding of polymeric material. Trexel, Wolf Greenfield & Sacks PC, Federal Reserve Plaza, February 16, 2006: US20060035988-A1

Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection mol ...