Patents by Inventor Masami Kamaya

Masami Kamaya 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).

  • Dried porous crumbs of hydrogenated block copolymer
    Patent number: 7579385
    Abstract: Disclosed are dried porous crumbs of a hydrogenated block copolymer which is obtained by hydrogenating a block copolymer comprising (a) at least one polymer block composed mainly of aromatic vinyl monomer units and (b) at least one polymer block composed mainly of conjugated diene monomer units, and which has a molecular weight of 70,000 or more. The dried porous crumbs have a water content of 1% by weight or less and having the capability of absorbing an oil in an amount of 1.0 or more, in terms of the ratio of the weight of an oil, which is absorbed by the dried porous crumbs when the dried porous crumbs are immersed in the oil at 25° C. under atmospheric pressure for 1 minute, to the weight of the dried porous crumbs. Also disclosed is a method for producing the same.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: August 25, 2009
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Yasumasa Yamakoshi, Toshinori Shiraki, Masami Kamaya
  • Method for removing hydrocarbon solvent from solution of hydrogenated block copolymer in hydrocarbon solvent
    Patent number: 6451964
    Abstract: Disclosed is a method for removing a hydrocarbon solvent from a hydrocarbon solvent solution of a hydrogenated block copolymer which is obtained by hydrogenating a block copolymer comprising a polymer block composed mainly of vinyl aromatic monomer units and a polymer block composed mainly of conjugated diene monomer units, wherein the weight ratio of the vinyl aromatic monomer units to the conjugated diene monomer units is from 5/95 to 95/5, wherein the hydrogenated block copolymer has a degree of hydrogenation of 30% or more with respect to double bonds in the conjugated diene monomer units, and wherein the method comprises: (1) mixing a hydrocarbon solvent solution of the hydrogenated block copolymer with heated water to obtain a dispersion of the solution in the heated water, and (2) introducing the dispersion into a steam stripping vessel containing heated water, wherein the dispersion is spouted into the gaseous phase in the vessel toward the surface of the heated water in the vessel under conditions wh
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: September 17, 2002
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Atsuo Hakamaya, Yasumasa Yamakoshi, Masami Kamaya
  • Electrodialysis using multi-stage electrodialytic cell
    Patent number: 4172779
    Abstract: Desalted water can be produced in an amount of 100 m.sup.3 /day from sea water or brackish water by passing dilution streams by means of one pump unit in series through multi-stage electrodialytic cell having gaskets of a specific structure.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: October 30, 1979
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Akira Yamaguchi, Katsuhiko Miyaso, Masami Kamaya
  • Desalination process by improved multistage electrodialysis
    Patent number: 3933610
    Abstract: Improved multistage electrodialysis process utilizing anion and cation exchange membranes with differing coefficients of divalent ion permselectivity selected and utilized to prevent precipitation of insoluble salts in concentration stream.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: January 20, 1976
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Leo Ehara, Takafumi Miwa, Masami Kamaya