Patents by Inventor Shigekazu Tanimoto

Shigekazu Tanimoto 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).

  • Method for manufacturing thermoplastic resin racks
    Patent number: 4950442
    Abstract: A rack of a thermoplastic resin is produced by heating a rod of a thermoplastic resin so that the temperature of at least the surface of said rod reaches a level within a range expressed by the equation, ##EQU1## (wherein T is a melting point of a resin forming a matrix for said rod), and thereafter forming a rack in one or both surfaces of said rod by a toothed roller and a grooved guide roller which are paired with each other, or a pair of opposed toothed rollers.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: August 21, 1990
    Assignee: Polyplastics Co., Ltd.
    Inventors: Shigekazu Tanimoto, Toshiaki Nakamura, Katsuyoshi Satoh
  • Method of manufacturing polyacetal resin film
    Patent number: 4879085
    Abstract: A polyacetal resin is manufactured by an improvement whereby a polyacetal resin having a melt index (MI) of 0.3.about.5.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: November 7, 1989
    Assignee: Polyplastics Co., Ltd.
    Inventors: Kotaro Taniguchi, Toshio Konishi, Takehiko Shimura, Shigekazu Tanimoto, Shigeru Nedzu
  • Method of manufacturing polybutylene terephthalate resin films
    Patent number: 4869864
    Abstract: A polybutylene terephthalate resin film is produced by forming a film of a polybutylene terephthalate resin having an inherent viscosity of more than 1.0 by the inflation molding technique and under the condition of extrusion resin temperatures within a range defined by the following relation:melting point (.degree.C.)<extrusion resintemperature (.degree.C.)<melting point-26+53.times.inherent viscosity (.degree.C.).
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: September 26, 1989
    Assignee: Polyplastics Co., Ltd.
    Inventors: Kotaro Taniguchi, Takehiko Shimada, Shigekazu Tanimoto, Shigeru Nedzu