Patents by Inventor Tamikazu Kume

Tamikazu Kume 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).

  • 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
  • Self-cross-linked alkyl cellulose
    Patent number: 7208593
    Abstract: A process for producing a self-cross-linking alkyl cellulose derivative, which includes irradiating, with radioactive rays, a mixture of a starting alkyl cellulose derivative (the number of carbon atoms of the alkyl group is 1 through 3, the alkyl group may be substituted by a hydroxyl group or a carboxyl group, and the carboxyl group may form a salt) (100 parts by weight) and water (5–2,000 parts by weight), and thus obtained self-cross-linking alkyl cellulose derivative has an improved biodegradability and excellent water-absorbability.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: April 24, 2007
    Assignees: Daicel Chemical Industries, Ltd., Japan Atomic Energy Research Institute
    Inventors: Fumio Yoshii, Tamikazu Kume, Tadashi Murakami
  • Self-cross-linked alkyl cellulose
    Publication number: 20050148767
    Abstract: A process for producing a self-cross-linking alkyl cellulose derivative, which includes irradiating, with radioactive rays, a mixture of a starting alkyl cellulose derivative (the number of carbon atoms of the alkyl group is 1 through 3, the alkyl group may be substituted by a hydroxyl group or a carboxyl group, and the carboxyl group may form a salt) (100 parts by weight) and water (5-2,000 parts by weight), and thus obtained self-cross-linking alkyl cellulose derivative has an improved biodegradability and excellent water-absorbability.
    Type: Application
    Filed: February 23, 2005
    Publication date: July 7, 2005
    Applicants: DAICEL CHEMICAL INDUSTRIES, LTD., JAPAN ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Fumio Yoshii, Tamikazu Kume, Tadashi Murakami
  • 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
  • Self-cross-linked alkyl cellulose and processes for producing the same
    Patent number: 6875862
    Abstract: A process for producing a self-cross-linking alkyl cellulose derivative, which includes irradiating, with radioactive rays, a mixture of a starting alkyl cellulose derivative (the number of carbon atoms of the alkyl group is 1 through 3, the alkyl group may be substituted by a hydroxyl group or a carboxyl group, and the carboxyl group may form a salt) (100 parts by weight) and water (5-2,000 parts by weight), and thus obtained self-cross-linking alkyl cellulose derivative has an improved biodegradability and excellent water-absorbability.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: April 5, 2005
    Assignees: Daicel Chemical Industries, Ltd., Japan Atomic Energy Research Institute
    Inventors: Fumio Yoshii, Tamikazu Kume, Tadashi Murakami
  • Method of promoting the take of nitrogen fixing microorganisms to plants by making use od radiation treatment
    Publication number: 20040152194
    Abstract: A method of enhancing the take of a nitrogen fixing microorganism by exposing it to low-energy electron beams, wherein the energy of electron beams is so controlled that an adequate dose for enhancing the take of the nitrogen fixing microorganism on the root of a plant is applied to the desired site on the epidermis of the plant's tissue.
    Type: Application
    Filed: January 21, 2004
    Publication date: August 5, 2004
    Applicant: Japan Atomic Energy Research Institute
    Inventors: Tamikazu Kume, Hidefumi Takeshita, Shu Fujimaki, Takuji Ohyama, Norikuni Ohtake
  • Process for producing grosslinked starch derivatives and crosslinked starch derivatives produced by the same
    Patent number: 6617448
    Abstract: A paste of starch derivative is crosslinked by irradiation with &ggr;-rays or electron beams in a dose of 0.1-200 kGy. Two different levels of crosslinking are performed; the first is mild crosslinking by irradiation at a low dose of 0.1-1.0 kGy to such an extent that the viscosity of the overall system increases upon immersion in water, and the second is intensive crosslinking by irradiation at a higher dose than 1.0 kGy to produce a gel that is completely insoluble in water.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: September 9, 2003
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Fumio Yoshii, Tamikazu Kume
  • 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
  • Self-cross-linking alkyl cellulose derivative, production process therefor, and use thereof
    Publication number: 20020103160
    Abstract: A process for producing a self-cross-linking alkyl cellulose derivative, which includes irradiating, with radioactive rays, a mixture of a starting alkyl cellulose derivative (the number of carbon atoms of the alkyl group is 1 through 3, the alkyl group may be substituted by a hydroxyl group or a carboxyl group, and the carboxyl group may form a salt) (100 parts by weight) and water (5-2,000 parts by weight), and thus obtained self-cross-linking alkyl cellulose derivative has an improved biodegradability and excellent water-absorbability.
    Type: Application
    Filed: January 29, 2001
    Publication date: August 1, 2002
    Inventors: Fumio Yoshii, Tamikazu Kume, Tadashi Murakami
  • Process for producing grosslinked starch derivatives and crosslinked starch derivatives produced by the same
    Publication number: 20020010327
    Abstract: A paste of starch derivative is crosslinked by irradiation with y-rays or electron beams in a dose of 0.1-200 kGy. Two different levels of crosslinking are performed; the first is mild crosslinking by irradiation at a low dose of 0.1-1.0 kGy to such an extent that the viscosity of the overall system increases upon immersion in water, and the second is intensive crosslinking by irradiation at a higher dose than 1.0 kGy to produce a gel that is completely insoluble in water.
    Type: Application
    Filed: May 22, 2001
    Publication date: January 24, 2002
    Inventors: Fumio Yoshii, Tamikazu Kume
  • Plant growth promoter
    Patent number: 6117815
    Abstract: Sodium alginate which is an oceanic natural resource is exposed, either in aqueous solution or in a dry state, to a radiation so that it is decomposed to a lower-molecular weight polysaccharide, which is processed into a dilute aqueous solution that is either used as a hydroponic solution or foliar spraying so as to promote their growth.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: September 12, 2000
    Assignee: Agency of Industrial Science and Technology, Japan Atomic Energy Research Institute
    Inventors: Keizo Makuuchi, Fumio Yoshii, Naotsugu Nagasawa, Tamikazu Kume, Quoc Hien Nguyen