Patents by Inventor Oh-Seung Kwon

Oh-Seung Kwon 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: 5474758
    Abstract: A device for delivering an aerosol, comprising: a casing member, a valve stem, and a diaphragm. The diaphragm contains a blend of (a) 100 parts by weight of a polyolefin random copolymer of about 80 to about 95 mole percent ethylene and a total of about 5 to about 20 mole percent of 1-butene, and (b) at least 10 parts by weight of a rubber comprising a styrene-ethylene/butylene-styrene block copolymer based on 100 parts by weight of polyolefin. The styrene-ethylene/butylene-styrene block copolymer is substantially uniformly dispersed within the polyolefin. The blend preferably has a Shore A hardness of 65 to 85.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: December 12, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Oh-Seung Kwon
  • Patent number: 5451453
    Abstract: Supports having azlactone-functional surfaces, adduct supports prepared from such azlactone-functional supports, and methods of preparing both are disclosed. Azlactone functionality is introduced to surfaces of a pre-existing support in a manner which retains useful physical and chemical characteristics of the pre-existing support. One method involves exposing surfaces with high energy radiation to generate free radical reaction sites on the surfaces and causing azlactone-functional moieties to react with the free radical reaction sites. Another method involves coating surfaces with azlactone monomers, crosslinking monomers, and optionally co-monomers and polymerizing the monomers to form a polymerized coating of azlactone-functionality on the surfaces. Another method involves dispersion polymerization of azlactone-functional moieties to produce azlactone-functional particles within pores and interstices of a pre-existing support.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: September 19, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David R. Gagnon, Patrick L. Coleman, Gary J. Drtina, Oh-Seung Kwon, Christopher S. Lyons, Dean S. Milbrath, Jerald K. Rasmussen, Julie B. Stahl
  • Patent number: 5292514
    Abstract: Azlactone-functional substrates, (especially hydrogels), mammalian body implants, and methods of making and using them are disclosed. The azlactone-functional substrates are the reaction product of substrates having azlactone-reactive nucleophilic surfaces and a multi-functional azlactone composition having at least two azlactone moieties, where at least one moiety covalently couples to the azlactone-reactive nucleophilic surface and at least one moiety remains available for further nucleophilic reaction, such as with a biologically active material. A preferred use of azlactone-functional hydrogel is as the optical element of a corneal prosthesis which enhances epithethial cell growth.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: March 8, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John T. Capecchi, Steven M. Heilmann, Larry R. Krepski, Oh-Seung Kwon, David B. Olson
  • Patent number: 5089180
    Abstract: Composite acrylic polymer rods having clear central regions and colored peripheral regions are prepared by polymerizing a flowable solution comprising acrylic monomer, dye and, dissolved therein, acrylic polymer, around a rod of acrylic polymer. Alternatively, a rod of acrylic polymer surrounded by a flowable mixture comprising partially polymerized acrylic monomer and dye is subjected to polymerization conditions to polymerize the flowable mixture.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: February 18, 1992
    Assignee: Iolab Corporation
    Inventors: Gary B. Dunks, Akira Yamada, Oh-Seung Kwon, Andrea Borgelt