Patents by Inventor Shiro Nagasawa

Shiro Nagasawa 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).

  • Vulcanized fiber sheet having a serrated cutting edge, a carton having said sheet adhered thereto, and a method of adhesion thereof
    Patent number: 6173876
    Abstract: The present invention is a sheet having a serrated cutting edge attached to a carton case containing a roll of a cooking sheet such as a synthetic resin film, paper sheet and metallic foil, the sheet having a serrated cutting edge used for cutting the cooking sheet. The sheet having a serrated cutting edge is made of a vulcanized fiber. A moisture-proof film of a synthetic resin is formed on the two surfaces of a vulcanized fiber blank in order to make the most of the rigidity and elasticity which are advantages of the vulcanized fiber and decreases moisture absorption which is a disadvantage thereof. The invention also is a carton to which the sheet having a serrated cutting edge is adhered to as well as to a method of adhering the sheet having a serrated cutting edge to the carton by utilizing the moisture-proof film and ultrasonic adhesion.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: January 16, 2001
    Assignee: Oji Paper Co., Ltd.
    Inventors: Mitsuhiro Sano, Nobuo Wakabayashi, Hiroaki Mikamo, Keiichi Ikeda, Isao Shoji, Shiro Nagasawa, Nobuyuki Tohyama
  • Method and apparatus for controlling air-fuel ratio of mixture for combustion engines
    Patent number: 4542730
    Abstract: In an air-fuel ratio control with a learning control, a first correction values stored in a memory in correspondence to intake condition of a combustion engine and fuel injection time are renewed in response to an air-fuel ratio of mixture sensed in an exhaust of the combustion engine and a second correction value also stored in the memory is renewed in dependence on a difference between the first correction values stored in correspondence to the same intake condition. The first correction values are used to correct a basic fuel injection time determined by the operating condition, while the second correction value is used to correct an ineffective fuel injection time. Fuel is injected for an interval which is a sum of the corrected basic fuel injection time and the corrected ineffective fuel injection time.
    Type: Grant
    Filed: July 11, 1984
    Date of Patent: September 24, 1985
    Assignee: Nippondenso Co., Ltd.
    Inventors: Shiro Nagasawa, Naruaki Morimoto, Toshio Fujimura, Masayuki Itoh, Shinya Taniguchi
  • Method and apparatus for controlling fuel injection in accordance with calculated basic amount
    Patent number: 4483301
    Abstract: In the method and apparatus for controlling electronically the fuel injection in an internal combustion engine, an interruption routine of the main routine is performed. In the interruption routine, the control logic is selected in accordance with the value of the calculated basic width of the pulse for the fuel injection. The degree of increase or decrease of the amount of the fuel injection is regulated based on the selected control logic.
    Type: Grant
    Filed: September 1, 1982
    Date of Patent: November 20, 1984
    Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuo Yamada, Shiro Nagasawa, Takao Niwa, Takeshi Gouno