Patents by Inventor Fumio Hayakawa

Fumio 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: 9200182
    Abstract: The present invention is a paint coat-protecting removable pressure-sensitive adhesive sheet comprising a base sheet, and a pressure-sensitive adhesive layer that is provided on the base sheet, the pressure-sensitive adhesive layer being formed of an emulsion pressure-sensitive adhesive composition that includes an emulsion of an ethylene-vinyl carboxylate copolymer as a main component. The present invention provides a paint coat-protecting removable pressure-sensitive adhesive sheet that does not cause swelling, whitening, and adhesive transfer even when the pressure-sensitive adhesive sheet is attached to the surface of a paint coat that has not been sufficiently dried (i.e., contains a small amount of solvent) or has not been sufficiently cured after drying, and removed from the paint coat.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: December 1, 2015
    Assignee: LINTEC CORPORATION
    Inventors: Takamasa Kase, Atsushi Tezuna, Soichiro Fujinaga, Fumio Hayakawa
  • Publication number: 20130340932
    Abstract: The present invention is a paint coat-protecting removable pressure-sensitive adhesive sheet comprising a base sheet, and a pressure-sensitive adhesive layer that is provided on the base sheet, the pressure-sensitive adhesive layer being formed of an emulsion pressure-sensitive adhesive composition that includes an emulsion of an ethylene-vinyl carboxylate copolymer as a main component. The present invention provides a paint coat-protecting removable pressure-sensitive adhesive sheet that does not cause swelling, whitening, and adhesive transfer even when the pressure-sensitive adhesive sheet is attached to the surface of a paint coat that has not been sufficiently dried (i.e., contains a small amount of solvent) or has not been sufficiently cured after drying, and removed from the paint coat.
    Type: Application
    Filed: August 30, 2013
    Publication date: December 26, 2013
    Applicant: LINTEC CORPORATION
    Inventors: Takamasa KASE, Atsushi TEZUNA, Soichiro FUJINAGA, Fumio HAYAKAWA
  • Patent number: 8574395
    Abstract: Provided is a protective sheet for a coating layer comprising a substrate sheet and provided thereon a pressure-sensitive adhesive layer, which can be applied as well to a coated surface insufficiently cured immediately after dried, and the pressure-sensitive adhesive layer described above comprises an addition reaction type silicone-based pressure-sensitive adhesive.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: November 5, 2013
    Assignees: Lintec Corporation, Honda Motor Co., Ltd.
    Inventors: Atsuhiro Tanaka, Fumio Hayakawa, Naoki Kubota, Katsuhiko Ikeda
  • Publication number: 20130183523
    Abstract: The present invention is a paint coat-protecting removable pressure-sensitive adhesive sheet comprising a base sheet, and a pressure-sensitive adhesive layer that is provided on the base sheet, the pressure-sensitive adhesive layer being formed of an emulsion pressure-sensitive adhesive composition that includes an emulsion of an ethylene-vinyl carboxylate copolymer as a main component. The present invention provides a paint coat-protecting removable pressure-sensitive adhesive sheet that does not cause swelling, whitening, and adhesive transfer even when the pressure-sensitive adhesive sheet is attached to the surface of a paint coat that has not been sufficiently dried (i.e., contains a small amount of solvent) or has not been sufficiently cured after drying, and removed from the paint coat.
    Type: Application
    Filed: July 26, 2011
    Publication date: July 18, 2013
    Applicant: LINTEC CORPORATION
    Inventors: Takamasa Kase, Atsushi Tezuna, Soichiro Fujinaga, Fumio Hayakawa
  • Publication number: 20130029141
    Abstract: Provided is a releasable pressure sensitive adhesive sheet, which is mainly used fora coating film for an automobile, and which is applicable to a coating film with insufficient curing immediately after drying. Specifically provided is a releasable pressure sensitive adhesive sheet to be adhered to a curable coating film, which has a pressure sensitive adhesive layer on at least one face of a substrate, in which the substrate has a Young's modulus “E” of 100 N/mm2 or more, a thickness of 0.020 mm or more, and a bending stress coefficient “k” (k=Eh3) of 0.038 N·mm or more when the thickness of the substrate is set to “h” (mm).
    Type: Application
    Filed: November 29, 2007
    Publication date: January 31, 2013
    Applicants: Honda Motor Co., Ltd., Lintec Corporation
    Inventors: Atsuhiro Tanaka, Tomomi Suzuki, Fumio Hayakawa, Naoki Kubota, Katsuhiko Ikeda
  • Publication number: 20110311780
    Abstract: Provided is a releasable pressure sensitive adhesive sheet, which is mainly used for a coating film for an automobile, and which is applicable to a coating film with insufficient curing immediately after drying. Specifically provided is a releasable pressure sensitive adhesive sheet for a curable coating film, which has a pressure sensitive adhesive layer on one face of a front substrate, in which a face of the pressure sensitive adhesive layer out of contact with the front substrate has a rolling circle arithmetic mean waviness (Wea) specified in JIS B0610 of 0.30 ?m or less.
    Type: Application
    Filed: November 29, 2007
    Publication date: December 22, 2011
    Applicants: Honda Motor Co., Ltd., Lintec Corporation
    Inventors: Atsuhiro Tanaka, Tomomi Suzuki, Fumio Hayakawa, Naoki Kubota, Katsuhiko Ikeda
  • Publication number: 20110284159
    Abstract: Provided is a protective sheet for a coating layer comprising a substrate sheet and provided thereon a pressure-sensitive adhesive layer, which can be applied as well to a coated surface insufficiently cured immediately after dried, and the pressure-sensitive adhesive layer described above comprises an addition reaction type silicone-based pressure-sensitive adhesive.
    Type: Application
    Filed: July 27, 2011
    Publication date: November 24, 2011
    Applicants: Honda Motor Co., Ltd., LINTEC CORPORATION
    Inventors: Atsuhiro Tanaka, Fumio Hayakawa, Naoki Kubota, Katsuhiko Ikeda
  • Publication number: 20110212328
    Abstract: According to the present invention, there are provided a removable pressure sensitive adhesive sheet applicable even to a coating film incompletely cured immediately after having been dried and a method of protecting an incompletely cured coating film. The removable pressure sensitive adhesive sheet of the present invention is a removable pressure sensitive adhesive sheet characterized in that the sheet is obtained by providing a substrate sheet with a pressure sensitive adhesive layer, and that the pressure sensitive adhesive layer has a storage elastic modulus at 23° C. of 1.0×105 Pa or more and a storage elastic modulus at 80° C. of 0.4×105 Pa or more. The sheet is applicable even to an incompletely cured coating film.
    Type: Application
    Filed: August 25, 2008
    Publication date: September 1, 2011
    Applicants: LINTEC CORPORATION, HONDA MOTOR CO., LTD
    Inventors: Atsuhiro Tanaka, Fumio Hayakawa, Naoki Kubota