Patents by Inventor Nobuhiro Toyota

Nobuhiro Toyota 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).

  • Polymer composition of ethylenic compounds and pullulan
    Patent number: 4029616
    Abstract: A polymer composition comprising pullulan and an ethylenic compound is obtained by polymerizing the ethylenic compound in the presence of pullulan and in the presence or absence of a solvent and a catalyst. The polymer compositions are novel composition which have the characteristics of the pullulan in combination with those of the ethylenic compound, and are useful as various industrial chemicals such as vehicles of paints and inks, organic pigments, paper- and fiber-treating agents, information-recording agents, adhesives, resins, packing materials, additives for concrete and mortar, impregnate materials for wood, cosmetics, etc.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: June 14, 1977
    Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Incorporated
    Inventors: Seizo Nakashio, Kozo Tsuji, Nobuhiro Toyota, Fumio Fujita
  • Process for water-insolubilization of molded pullulan
    Patent number: 4029886
    Abstract: A molded pullulan can be water-insolubilized by treatment with, as the combination of a crosslinking agent with a catalyst, at least one of the combinations of (1) formaldehyde with zinc chloride, (2) glyoxal with magnesium chloride, and (3) formaldehyde or glyoxal with hydrogen chloride gas or sulfurous acid gas.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: June 14, 1977
    Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Incorporated
    Inventors: Seizo Nakashio, Kozo Tsuji, Nobuhiro Toyota, Fumio Fujita
  • Multilayered molded plastics of pullulan and polymers, paper or aluminum foil
    Patent number: 3997703
    Abstract: A multilayered molded plastic having at least one layer comprising pullulan. The molded plastic is low in gas permeability, transparent, high in strength and non-toxic.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: December 14, 1976
    Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Incorporated
    Inventors: Seizo Nakashio, Kozo Tsuji, Nobuhiro Toyota, Fumio Fujita, Takami Sato
  • Molded pullulan type resins coated with thermosetting resin films
    Patent number: 3993840
    Abstract: The surface of a molded pullulan type resin is coated with a thermosetting resin film, whereby a water-insoluble molded pullulan type resin can be obtained while retaining such excellent properties of the pullulan type resin as transparency, toughness, gas impermeability and pollution-freeness.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: November 23, 1976
    Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Incorporated
    Inventors: Kozo Tsuji, Nobuhiro Toyota, Fumio Fujita
  • Novel cosmetics containing pullulan
    Patent number: 3972997
    Abstract: A cosmetic can be improved and enhanced in its effect when incorporated with pullulan, which is a linear high polymer having repetition units, bonded through .alpha.-1,6-linkages, of maltotriose, a trimer of glucose, and is represented by the formula, ##SPC1##Wherein n represents the polymerization degree and is an integer of 10 to 10,000.
    Type: Grant
    Filed: October 3, 1974
    Date of Patent: August 3, 1976
    Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Incorporated
    Inventors: Seizo Nakashio, Kozo Tsuji, Nobuhiro Toyota, Fumio Fujita
  • Process for preparing aqueous dispersions of high polymer using pullulan as a dispersant
    Patent number: 3954724
    Abstract: A process for preparing an aqueous dispersion of high polymer, characterized by using pullulan as a dispersant.The aqueous high polymer dispersion obtained by the above-mentioned process is not only high in stability but also so excellent in practical properties as to be usable for the processing of fibers or papers.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: May 4, 1976
    Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Inc.
    Inventors: Seizo Nakashio, Kozo Tsuji, Nobuhiro Toyota, Fumio Fukita, Takeo Oyamada
  • Paper coating material containing pullulan
    Patent number: 3932192
    Abstract: A coating material obtained by incorporating into a paper coating material pullulan, which is a linear high polymer having repetition units, bonded through .alpha.-1,6 linkages, of maltotriose, a trimer of glucose, and is represented by the formula, ##SPC1##Wherein n represents the polymerization degree and is an integer of 20 to 10,000, is excellent in such properties as gloss, printing gloss, adhesive strength, and viscosity stability during storage.
    Type: Grant
    Filed: September 24, 1974
    Date of Patent: January 13, 1976
    Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Inc.
    Inventors: Seizo Nakashio, Noriyuki Sekine, Nobuhiro Toyota, Fumio Fujita, Masahiro Domoto