Patents by Inventor Ryuuji Haseyama

Ryuuji Haseyama 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).

  • Foam of thermoplastic urethane elastomer composition and process for producing the foam
    Patent number: 6849667
    Abstract: The method of the present invention for producing a urethane-based thermoplastic elastomer composition foam comprises the steps of: adding and mixing 0.1 to 30 parts by weight of carbon dioxide (B) to 100 parts by weight of a urethane-based thermoplastic elastomer composition (A) in a molten state, wherein said urethane-based thermoplastic elastomer composition (A) comprises a urethane-based thermoplastic elastomer (A-1) and other thermoplastic elastomer (A-2) in an (A-1)/(A-2) ratio of 20/80 to 99/1 by weight, to form a molten urethane-based thermoplastic elastomer composition (C) which is in a state of a mixture of the urethane-based thermoplastic elastomer composition (A) and the carbon dioxide (B) (gas dissolving step); and lowering a temperature of said molten urethane-based thermoplastic elastomer composition (C) (cooling step).
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: February 1, 2005
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Ryuuji Haseyama, Masahiko Hashiba, Kaoru Yorita, Shigeo Nishikawa, Yoko Shimada
  • Terminal-blocked isocyanate prepolymer having oxadiazine ring, process for producing the same, and composition for surface-coating material
    Patent number: 6710151
    Abstract: The end-blocked isocyanate prepolymer having an oxadiazine ring according to the present invention is characterized in that at least one of isocyanate groups of a NCO-terminated isocyanate prepolymer, which has NCO groups at the ends and comprises units derived from an oxadiazinetrione compound (A) represented by the following formula (1) and units derived from an active hydrogen compound (B) represented by the following formula (2), is blocked with a unit derived from an end-blocking agent (C) having at least one active hydrogen in one molecule, and that the end-blocked isocyanate prepolymer has a softening point of not lower than 50° C.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: March 23, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Toshiaki Kuwatsuka, Hideaki Ogata, Manabu Shimoda, Ryuuji Haseyama, Izumi Mega
  • Terminal-blocked isocyanate prepolymer having oxadiazine ring, process for producing the same, and composition for surface-coating material
    Publication number: 20030162930
    Abstract: The end-blocked isocyanate prepolymer having an oxadiazine ring according to the present invention is characterized in that at least one of isocyanate groups of a NCO-terminated isocyanate prepolymer, which has NCO groups at the ends and comprises units derived from an oxadiazinetrione compound (A) represented by the following formula (1) and units derived from an active hydrogen compound (B) represented by the following formula (2), is blocked with a unit derived from an end-blocking agent (C) having at least one active hydrogen in one molecule, and that the end-blocked isocyanate prepolymer has a softening point of not lower than 50° C.
    Type: Application
    Filed: November 12, 2002
    Publication date: August 28, 2003
    Inventors: Toshiaki Kuwatsuka, Hideaki Ogata, Manabu Shimoda, Ryuuji Haseyama, Izumi Mega
  • Foam of thermoplastic urethane elastomer composition and process for producing the foam
    Publication number: 20020193459
    Abstract: The method of the present invention for producing a urethane-based thermoplastic elastomer composition foam comprises the steps of:
    Type: Application
    Filed: June 6, 2002
    Publication date: December 19, 2002
    Inventors: Ryuuji Haseyama, Masahiko Hashiba, Kaoru Yorita, Shigeo Nishikawa, Yoko Shimada