Patents by Inventor Masayuki Kurebayashi

Masayuki Kurebayashi 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).

  • Pneumatic tire
    Patent number: 10596856
    Abstract: In a pneumatic tire, blocks 11 each have a block width that is increased from circumferential end portions to a circumferential middle portion of the block 11 in a manner such that widthwise end portions 10 located on both ends in the tread width direction are positioned in a circumferentially intermediate portion of the block 11 and also have the maximum circumferential length that is larger than the maximum width of the block 11, thereby having, in its plan view, a polygonal contour shape that includes end sides 11a located in the circumferential end portions, and circumferential distances a and a1 between a circumferential middle position 11b of each end side 11a of the block 11 and a circumferential middle position 10a of a line L connecting the widthwise end portions 10 of the block 11 are both twice or more of the maximum depth of circumferential grooves.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: March 24, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Naohiro Ookawa, Masayuki Kurebayashi
  • Pneumatic tire
    Patent number: 9776459
    Abstract: An object of the present invention is to provide a pneumatic tire capable of significantly increasing the possibility that the tire can be recycled as a base tire for a retreaded tire without so much sacrificing a product life of the tire prior to retreading.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: October 3, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takayoshi Hironaka, Masayuki Kurebayashi
  • PNEUMATIC TIRE
    Publication number: 20150352903
    Abstract: In a pneumatic tire, blocks 11 each have a block width that is increased from circumferential end portions to a circumferential middle portion of the block 11 in a manner such that widthwise end portions 10 located on both ends in the tread width direction are positioned in a circumferentially intermediate portion of the block 11 and also have the maximum circumferential length that is larger than the maximum width of the block 11, thereby having, in its plan view, a polygonal contour shape that includes end sides 11a located in the circumferential end portions, and circumferential distances a and a1 between a circumferential middle position 11b of each end side 11a of the block 11 and a circumferential middle position 10a of a line L connecting the widthwise end portions 10 of the block 11 are both twice or more of the maximum depth of circumferential grooves.
    Type: Application
    Filed: January 31, 2014
    Publication date: December 10, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Naohiro OOKAWA, Masayuki KUREBAYASHI
  • PNEUMATIC TIRE
    Publication number: 20140246134
    Abstract: An object of the present invention is to provide a pneumatic tire capable of significantly increasing the possibility that the tire can be recycled as a base tire for a retreaded tire without so much sacrificing a product life of the tire prior to retreading.
    Type: Application
    Filed: September 8, 2011
    Publication date: September 4, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takayoshi Hironaka, Masayuki Kurebayashi