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
Jane E Martini Vvedensky, Nam P Suh, Francis A Waldman: Microcellular closed cell foams and their method of manufacture. Massachusetts Institute of Technology, Arthur A Smith Jr, Thomas J Engellenner, September 25, 1984: US04473665 (160 worldwide citation)

Microcellular foam materials having void fractions of about 5 to 30 percent and uniform void sizes on the order of 2 to 25 microns are produced by pre-saturating the material to be processed with a uniform concentration of a gas while controlling temperature and pressure to avoid cell nucleation. Pr ...


3
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 ...


4
Jonathan S Colton, Nam P Suh: Microcellular foams of semi-crystaline polymeric materials. Massachusetts Institute of Technology, Hamilton Brook Smith & Reynolds, November 3, 1992: US05160674 (94 worldwide citation)

A method for producing microcellular foam from a semi-crystalline polymeric material. The material is heated to its melting point at an elevated pressure and then saturated with a uniform concentration of a gas. The pressure is then lowered causing bubble nucleation and growth within the material. T ...


5
Chul B Park, Nam P Suh, Daniel F Baldwin: Method for providing continuous processing of microcellular and supermicrocellular foamed materials. Massachusetts Institute of Technology, Ernest V Dike Bronstein Roberts & Cushman Linek, February 2, 1999: US05866053 (71 worldwide citation)

An extrusion system for providing a foamed material in which a material such as a polymer material is supplied to an extruder for movement through a rotating screw member. The material is placed in a molten state and a foaming agent, such as a supercritical fluid, is introduced into the extruder at ...


6
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 ...


7
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 ...


8
Nam P Suh, Nam Hyo Cho: Internal combustion engine. Massachusetts Institute of Technology, Wolf Greenfield & Sacks, September 14, 2004: US06789514 (55 worldwide citation)

An internal combustion engine that has a pair of cylinders each having a reciprocating piston connected to a crank shaft by a connecting rod. One of the cylinders is adapted for an air and fuel intake and a compression strokes only, and the other of the cylinders adapted for power and exhaust stroke ...


9
Nam P Suh, Alonso R Ramos, Elliot K Chartash: Method for forming electrically conductive paths. Massachusetts Institute of Technology, Arthur A Smith Jr, Robert F O Connell, June 26, 1979: US04159414 (54 worldwide citation)

A method for forming electrically conductive paths on a substrate wherein at least a selected surface (or surfaces) of the substrate on which the paths are to be formed is made of a composition which comprises a first material, preferably a polymer material having a metal compound, preferably a meta ...


10
Chul B Park, Nam P Suh, Daniel F Baldwin: Method for providing continuous processing of microcellular and supermicrocellular foamed materials. Massachusetts Institute of Technology, George W Dike Bronstein Roberts and Cushman Neuner, April 18, 2000: US06051174 (46 worldwide citation)

An extrusion system for providing a foamed material in which a material such as a polymer material is supplied to an extruder for movement through a rotating screw member. The material is placed in a molten state and a foaming agent, such as a supercritical fluid, is introduced into the extruder at ...