Patents by Inventor Naoki Hayakawa

Naoki Hayakawa 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).

  • Patent number: 5514510
    Abstract: The present invention is concerning a binder resin for an electrophotographic toner, which comprises a mixture of polymers comprising styrenic monomer units with or without acrylic or methacrylic monomer units. This binder resin has at least one peak in the range of each molecular weight of less than 30,000 and not less than 150,000 in the molecular weight distribution by the GPC analysis. The binder resin of the present invention satisfies sevelal specified inequalities concerning the relations among the molecular weight distribution, the glass transition temperature and the rheological characteristics of said resin. The binder resin of the invention satisfies all properties of the lowest fixing temperature, the lowest temperature when the hot offsett was observed and the running stability, which is important as a properties of the toner, in a higher level than the previous ones.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: May 7, 1996
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventor: Naoki Hayakawa
  • Patent number: 4670261
    Abstract: A parenteral alimentation solution having excellent nutritional properties with preventing problems such as browning which comprises three components of a reducing sugar, amino acids and electrolytes in a specific composition and a specific amount.
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: June 2, 1987
    Assignees: Tanabe Seiyaku Co., Ltd., Terumo Kabushiki Kaisha
    Inventors: Masayoshi Samejima, Saburo Matsuda, Toshio Wakabayashi, Naoki Hayakawa
  • Patent number: 4657540
    Abstract: A high pressure steam sterilized plastic container holding an infusion solution therein is prepared first by providing a flexible container made of plastic material and holding an infusion solution. The container is then sterilized in a saturated steam atmosphere which is pressurized by a gas inert to the infusion solution and does not contain oxygen. The infusion solution in the container is not deteriorated after the sterilization.
    Type: Grant
    Filed: July 23, 1985
    Date of Patent: April 14, 1987
    Assignee: Terumo Corporation
    Inventors: Tomiyuki Iwamoto, Naoki Hayakawa, Shigeru Matsubara
  • Patent number: 4548605
    Abstract: A plastic container containing an infusion solution which may not allow deterioration of the infusion solution over a long period of time, is prepared by providing a container which is made of a flexible plastic material having a heat resistance able to withstand heat of autoclaving sterilization and which holds an infusion solution containing components which may easily deteriorate upon contact with oxygen; the container is packaged with a first packaging material which consists of a plastic material having a gas permeability and a heat resistance able to withstand the heat of autoclaving sterilization. The container packaged with the first packaging material is sterilized by autoclaving in an atmosphere of saturated steam containing substantially no oxygen. The packaged and sterilized container is cooled while substantially maintaining a pressure of autoclaving sterilization by introducing an inert gas into the atmosphere.
    Type: Grant
    Filed: December 7, 1982
    Date of Patent: October 22, 1985
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Tomiyuki Iwamoto, Naoki Hayakawa, Haruo Honda, Teppei Maruyama