Patents by Inventor Kyung W. Suh

Kyung W. Suh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6818163
    Abstract: An improved process for making a structural foamed polymer, a multilayer polymer film, sheet or tube, a pultrusion polymer profile, a compression molded extruded fiber reinforced polymer pre-form, a strand foamed polymer and a SCORIM formed polymer article. The improvement includes the step of dispersing a multi-layered silicate material with the polymer so that the polymer has dispersed therein single layers of silicate material, double layers of silicate material, triple layers of silicate material, four layers of silicate material, five layers of silicate material and more than five layers of silicate material, the volume percent of the one, two, three, four and five layers of silicate material greater than the volume percent of the more then five layers of silicate material. In each of the above embodiments an important benefit of the instant invention is the orientation of the plane of the layers of silicate material.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: November 16, 2004
    Assignee: Dow Global Technologies Inc.
    Inventors: Richard F. Fibiger, Kyung W. Suh, Mark A. Barger, Joseph A. Schomaker, Wenbin Liang, George A. Mackey, Harvey C. Tung
  • Patent number: 6787580
    Abstract: Prepare a multimodal thermoplastic polymer foam having a distribution of large and small cells in a substantial absence of water by using a blowing agent stabilizer. Multimodal foams of the present invention have blowing agent stabilizer predominantly located proximate to large cells. The resulting multimodal foams have particular utility as thermal insulating materials.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 7, 2004
    Assignee: Dow Global Technologies Inc.
    Inventors: Yohannes Chonde, Daniel Imeokparia, John B. Horstman, Robert A. Kirchhoff, Kyung W. Suh
  • Publication number: 20030055188
    Abstract: Disclosed are cyclic phosphate esters of fumarate—or maleic acids suitable for use as a comonomer, capable of being copolymerized with a monovinylidene aromatic compounds to impart flame resistant properties to the resultant copolymers.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 20, 2003
    Inventors: Steven R. Mitchell, H. James Harwood, William G. Stobby, Duane B. Priddy, Kyung W. Suh
  • Patent number: 6503992
    Abstract: Disclosed are cyclic phosphate esters of fumarate- or maleic acids suitable for use as a comonomer, capable of being copolymerized with a monovinylidene aromatic compounds to impart flame resistant properties to the resultant copolymers.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: January 7, 2003
    Assignees: The Dow Chemical Company, The University of Akron
    Inventors: Steven R. Mitchell, H. James Harwood, William G. Stobby, Duane B. Priddy, Kyung W. Suh
  • Patent number: 6417242
    Abstract: The present invention relates to a foam, a process for preparing the foam and an article containing the foam. The foam contains a coupled propylene polymer and has a density in of from 9.6 to 801 kg/m3 and has either a foamability factor of more than 1.8 to less than 2.8 and an open cell content less than 20 percent, or a foamability factor of at least 2.8 and less than 15 and an open cell content of less than 50 percent. The process includes heating a coupled propylene polymer having a melt flow rate from 0.2 to 20 g/10 min and a melt strength of at least 39 cN to a molten state to produce a molten polymer material and mixing said molten polymer material with a blowing agent under conditions to produce a foamed material having a density in the range of from 9.6 to 801 kg/m3.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: July 9, 2002
    Assignee: Dow Global Technologies Inc.
    Inventors: Kevin R. Hughes, Robert L. Sammler, Kyung W. Suh, Jin Zhao, Johan A. Thoen, Martin H. Tusim
  • Publication number: 20020077378
    Abstract: Prepare a multimodal thermoplastic polymer foam having a distribution of large and small cells in a substantial absence of water by using a blowing agent stabilizer. Multimodal foams of the present invention have blowing agent stabilizer predominantly located proximate to large cells. The resulting multimodal foams have particular utility as thermal insulating materials.
    Type: Application
    Filed: September 28, 2001
    Publication date: June 20, 2002
    Inventors: Yohannes Chonde, Daniel Imeokparia, John B. Horstman, Robert A. Kirchhoff, Kyung W. Suh
  • Publication number: 20020077379
    Abstract: The present invention relates to a foam, a process for preparing the foam and an article containing the foam.
    Type: Application
    Filed: October 2, 2001
    Publication date: June 20, 2002
    Inventors: Kevin R. Hughes, Robert L. Sammler, Kyung W. Suh, Jin Zhao, Johan A. Thoen, Martin H. Tusim
  • Publication number: 20020040120
    Abstract: Disclosed are cyclic phosphate esters of fumarate- or maleic acids suitable for use as a comonomer, capable of being copolymerized with a monovinylidene aromatic compounds to impart flame resistant properties to the resultant copolymers.
    Type: Application
    Filed: July 24, 2001
    Publication date: April 4, 2002
    Inventors: Steven R. Mitchell, H. James Harwood, William G. Stobby, Duane B. Priddy, Kyung W. Suh
  • Patent number: 6251319
    Abstract: A process for making a polymer foam sheet, which comprises (i) extruding through an annular extrusion die a foamable composition comprising at least one polypropylene polymer and at least one blowing agent, at a pressure, temperature, and extrusion rate sufficient to prevent foaming of the composition prior to exiting the die, under conditions sufficient to form a foam tube having a density of at least 16 kg/m3 and no greater than 200 kg/m3, an open cell content of less than 70 percent, a circumference of at least 1 meter, and a foam thickness of at least 2 mm and no greater than 25 mm, wherein the blowing agent is used in an amount of from 0.2 to 4.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: June 26, 2001
    Assignee: The Dow Chemical Company
    Inventors: Martin H. Tusim, Martin C. Cornell, Kyung W. Suh, Christopher P. Christenson, Chung P. Park
  • Patent number: 6225364
    Abstract: Disclosed is an extruded, dimensionally stable, closed cell alkenyl aromatic polymer foam. The foam comprises an alkenyl aromatic polymer material greater than 50 percent by weight of alkenyl aromatic monomeric units. The foam has a density of about 16 to about 64 kilograms per cubic meter. The foam has a thickness in cross section of 15 millimeters or more. The foam has a blowing agent composition comprising a primary blowing agent of about 70 to about 95 weight percent 1,1,2,2-tetrafluoroethane and a secondary blowing agent comprising about 30 to about 5 weight percent based upon the total moles of the blowing agent composition. The secondary blowing agent being selected from the group consisting essentially of 1,1,1,2-tetrafluoroethane, carbon dioxide, nitrogen, argon, and water. Further disclosed is a process for making the foam.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: May 1, 2001
    Assignee: The Dow Chemical Company
    Inventors: Bharat I. Chaudhary, Kyung W. Suh, Andrew N. Paquet
  • Patent number: 6213540
    Abstract: An energy absorbing article having a direction in which impact resistance is desired is formed of extruded thermoplastic foam exhibit anisotropic compressive strength. The extrusion direction of the thermoplastic foam is aligned substantially parallel with the direction in which impact resistance is desired to provide an energy absorbing article exhibiting a high ratio of compressive strength to weight.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: April 10, 2001
    Assignee: The Dow Chemical Company
    Inventors: Martin H. Tusim, Martin C. Cornell, Kyung W. Suh, Christopher P. Christenson, Chung P. Park
  • Patent number: 6051621
    Abstract: Foamed polymeric materials exhibiting improved heat resistant properties and improved mechanical properties, as compared with known foamed styrene polymer materials, are obtained by expanding a polymer blend including a syndiotactic styrene polymer and an amount of an amorphous polymeric material which will impart enhanced heat resistant properties to the blend.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: April 18, 2000
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, Creston D. Shmidt, Daniel D. Imeokparia, Alan E. Platt, Thomas E. Wessel
  • Patent number: 5910358
    Abstract: The present invention pertains to a multilayer foamed flooring and wall product. The inventive product is a resilient cushion foam flooring and wall product that is free of polyvinyl chloride (PVC), plasticizers and heavy metal stabilizer. The product is made of a multilayer top layer which is integrated with a latex or polyolefin polymer foam back layer. The product has particular utility in the heterogeneous flooring market and can be prepared using ordinary PVC melt processing equipment.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: June 8, 1999
    Assignee: The Dow Chemical Company
    Inventors: Johan A. Thoen, Kyung W. Suh, James G. Kennedy, Creston D. Shmidt
  • Patent number: 5889069
    Abstract: Foamed polymeric materials exhibiting improved heat resistant properties and improved mechanical properties, as compared with known foamed styrene polymer materials, are obtained by expanding a polymer blend including a syndiotactic styrene polymer and an amount of an amorphous polymeric material which will impart enhanced heat resistant properties to the blend.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: March 30, 1999
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, Creston D. Shmidt, Daniel D. Imeokparia, Alan E. Platt, Thomas E. Wessel
  • Patent number: 5869544
    Abstract: Disclosed is an extruded, open-cell microcellular alkenyl aromatic polymer foam useful in insulating applications. The foam has an open cell content of about 70 percent or more. The foam has an average cell size of about 70 micrometers or less. The foam is particularly useful in evacuated or vacuum insulation panels. Further disclosed is a process for making the open-cell foam. Further disclosed is a fabricated foam article.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: February 9, 1999
    Assignee: The Dow Chemical Company
    Inventors: Creston D. Shmidt, Kyung W. Suh, Daniel D. Imeokparia, Bruce A. Malone, Ken Franklin
  • Patent number: 5863960
    Abstract: Disclosed is an extruded, open-cell microcellular alkenyl aromatic polymer foam useful in insulating applications. The foam has an open cell content of about 70 percent or more. The foam has an average cell size of about 70 micrometers or less. The foam is particularly useful in evacuated or vacuum insulation panels. Further disclosed is a process for making the open-cell foam. Further disclosed is a fabricated foam article.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: January 26, 1999
    Assignee: The Dow Chemical Company
    Inventors: Creston D. Shmidt, Daniel D. Imeokparia, Kyung W. Suh, Bruce A. Malone, Ken Franklin
  • Patent number: 5854295
    Abstract: Disclosed is an evacuated and unevacuated microcellular foam containing an infrared attenuating agent (IAA). The evacuated foam has an average cell size of about 70 micrometers or less. The unevacuated foam has an average cell size of 1.0 micrometers or less. The IAA provide a greater proportional reduction in foam thermal conductivity in these foams than in foams of larger cell size. Further disclosed is a method of using the foams.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: December 29, 1998
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, Michio Yamada, Creston D. Schmidt, Daniel D. Imeokparia
  • Patent number: 5824710
    Abstract: Disclosed is an extruded, open-cell alkenyl aromatic polymer foam useful in insulating applications. The foam has an open cell content of 30 percent or more. The foam further has in minor dimension and cross section of greater than 6.5 millimeters. The foams has a high heat distortion temperature, and is particularly useful in roofing applications. Further disclosed is a process for making the open-cell foam.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: October 20, 1998
    Assignee: The Dow Chemical Company
    Inventors: Daniel D. Imeokparia, Creston D. Shmidt, Kyung W. Suh
  • Patent number: 5784845
    Abstract: A roofing system (20) for a structure such as a building. The system (20) includes a roof deck (10), a plurality of panels (12) of an extruded alkenyl aromatic polymer foam above and adjacent the deck (10); and a substantially waterproof membrane (14), above and adjacent to the foam. The foam has an open cell content of 30 percent or more. The foam provides excellent mechanical support for the membrane (14), and is water resistant. The foam further has a high heat distortion temperature, and is substantially free of distortion at high service temperatures encountered in roofing systems. Further disclosed is a recovery roofing system employing the above foam. Further disclosed are processes for constructing a new roofing system and a recovery roofing system.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: July 28, 1998
    Assignee: The Dow Chemical Company
    Inventors: Daniel D. Imeokparia, Creston D. Shimdt, Kyung W. Suh, Michael J. Ennis
  • Patent number: 5780521
    Abstract: Disclosed is an extruded, open-cell microcellular alkenyl aromatic polymer foam useful in insulating applications. The foam has an open cell content of about 70 percent or more. The foam has an average cell size of about 70 micrometers or less. The foam is particularly useful in evacuated or vacuum insulation panels. Further disclosed is a process for making the open-cell foam. Further disclosed is a fabricated foam article.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: July 14, 1998
    Assignee: The Dow Chemical Company
    Inventors: Creston D. Shmidt, Daniel D. Imeopkaria, Kyung W. Suh, Bruce A. Malone, Ken Franklin