Patents by Inventor Hiroshi Mitomo

Hiroshi Mitomo 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).

  • BIODEGRADABLE MATERIAL AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20090085260
    Abstract: A biodegradable aliphatic polyester, such as polylactic acid, is mixed with a monomer having allyl and molded into a molding having the crosslinking degree of the biodegradable aliphatic polyester increased. Thereafter, the molding is exposed to ionizing radiation to thereby obtain a molding excelling in heat resistance. Triallyl isocyanurate or triallyl cyanurate is used as the monomer having allyl.
    Type: Application
    Filed: November 24, 2008
    Publication date: April 2, 2009
    Applicants: JAPAN ATOMIC ENERGY RESEARCH INSTITUTE, SUMITOMO ELECTRIC FINE POLYMER INC
    Inventors: Naotsugu NAGASAWA, Toshiaki Yagi, Fumio Yoshii, Shin-ichi Kanazawa, Kiyoshi Kawano, Yoshihiro Nakatani, Hiroshi Mitomo
  • Process for producing chitin derivatives and/or chitosan derivatives having a crosslinked structure
    Patent number: 7307157
    Abstract: A process for producing a chitin derivative and/or a chitosan derivative that have a crosslinked structure, which comprises irradiating a paste of a mixture consisting of 100 parts by weight of a chitin derivative and/or a chitosan derivative and 3˜1,000 parts by weight of purified water.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: December 11, 2007
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Fumio Yoshii, Naotsugu Nagasawa, Tamikazu Kume, Hiroshi Mitomo
  • Biodegradable material and process for producing the same
    Publication number: 20060160984
    Abstract: A biodegradable aliphatic polyester, such as polylactic acid, is mixed with a monomer having allyl and molded into a molding having the crosslinking degree of the biodegradable aliphatic polyester increased. Thereafter, the molding is exposed to ionizing radiation to thereby obtain a molding excelling in heat resistance. Triallyl isocyanurate or triallyl cyanurate is used as the monomer having allyl.
    Type: Application
    Filed: October 20, 2004
    Publication date: July 20, 2006
    Inventors: Naotsugu Nagasawa, Toshiaki Yagi, Fumio Yoshii, Shin-ichi Kanazawa, Kiyoshi Kawano, Yoshihiro Nakatani, Hiroshi Mitomo
  • Process for producing chitin derivatives and/or chitosan derivatives having a crosslinked structure
    Publication number: 20050113773
    Abstract: A process for producing a chitin derivative and/or a chitosan derivative that have a crosslinked structure, which comprises irradiating a paste of a mixture consisting of 100 parts by weight of a chitin derivative and/or a chitosan derivative and 3˜1,000 parts by weight of purified water.
    Type: Application
    Filed: January 4, 2005
    Publication date: May 26, 2005
    Applicant: Japan Atomic Energy Research Institute
    Inventors: Fumio Yoshii, Naotsugu Nagasawa, Tamikazu Kume, Hiroshi Mitomo
  • Process for producing chitin derivatives and/or chitosan derivatives having a crosslinked structure
    Publication number: 20030125532
    Abstract: A process for producing a chitin derivative and/or a chitosan derivative that have a crosslinked structure, which comprises irradiating a paste of a mixture consisting of 100 parts by weight of a chitin derivative and/or a chitosan derivative and 3˜1,000 parts by weight of purified water.
    Type: Application
    Filed: November 27, 2002
    Publication date: July 3, 2003
    Applicant: Japan Atomic Energy Research Institute
    Inventors: Fumio Yoshii, Naotsugu Nagasawa, Tamikazu Kume, Hiroshi Mitomo
  • LACTONE-CONTAINING RESIN COMPOSITION, MOLDED OBJECT THEREOF, AND FILM
    Publication number: 20020136848
    Abstract: The present invention relates to a polycaprolactone resin irradiated by ionizing radiation in order to adjust gel fraction to 0.01-90%, a polycaprolactone-contained resin composition containing at least any one of other biodegradable resins such as an aliphatic polyester resin and an additive for resins, and an molded article therefrom. The molded article includes a thin-walled molded article such as a film, a bag for garbages, a mulch film for agriculture, a shrink film, a sheet-like molded article, and a thick-walled vessel such as a blister pack, a tape, fiber materials such as fibers, woven fabrics, non-woven fabrics, and materials for filtration, a net, and a foam, etc.
    Type: Application
    Filed: September 13, 1999
    Publication date: September 26, 2002
    Inventors: FUMIO YOSHII, KEIZO MAKUUCHI, HIROSHI MITOMO, DARMAWAN DARWIS, TADASHI MURAKAMI
  • Process for producing crosslinked polycaprolactone
    Patent number: 5977203
    Abstract: Polycaprolactone (PCL) is melted at a temperature of 60.degree. C. or higher and subsequently cooled down to a non-crystallizing temperature and exposed to radiation so that it is crosslinked and a network structure is introduced to impart heat resistance to the PCL. Because of the high degrees of its crosslinking, heat resistance and transparency, the PCL product can be used as a heat-resistant tape or a heat-shrinkable film.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: November 2, 1999
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Keizo Makuuchi, Fumio Yoshii, Shin Hasegawa, Hiroshi Mitomo, Darmawan Darwis