Patents by Inventor Hirofumi Oba

Hirofumi Oba 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: 11914172
    Abstract: Provided are a light absorbing material-containing film which contains quantum dots or the like and is capable of suppressing in-plane luminance unevenness and chromaticity unevenness; and a backlight unit. The light absorbing material-containing film includes a light absorbing material-containing layer that has a plurality of cylindrical or polygonal prism-shaped resin portions discretely disposed and a light absorption region contain light absorbing bodies and formed between the plurality of resin portions; a first substrate film that is laminated on one main surface of the light absorbing material-containing layer; and a second substrate film laminated on the other main surface of the light absorbing material-containing layer, where the light absorption region contains at least one phosphor that serves as the light absorbing body, and a binder.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: February 27, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Hirofumi Toyama, Tatsuya Oba, Takashi Yonemoto
  • Patent number: 10780744
    Abstract: Disclosed is a motorcycle pneumatic tire comprising a plurality of blocks arranged on a tread surface, wherein: a plurality of wide blocks, each having a tire widthwise length larger than a tire circumferential length, are formed in at least a central region and intermediate regions, and a plurality of narrow blocks, each having a smaller tire widthwise length than each of the wide blocks, are formed in at least the intermediate regions; and the following relations are satisfied: 1.5?W1/L1?4.0 . . . (A), 0.5?W2/L2?1.5 . . . (B), 0.3?S1M/S1?0.6 . . . (C), and 0.5?S2M/S2?1.0 . . . (D).
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: September 22, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Publication number: 20180194172
    Abstract: Disclosed is a motorcycle pneumatic tire comprising a plurality of blocks arranged on a tread surface, wherein: a plurality of wide blocks, each having a tire widthwise length larger than a tire circumferential length, are formed in at least a central region and intermediate regions, and a plurality of narrow blocks, each having a smaller tire widthwise length than each of the wide blocks, are formed in at least the intermediate regions; and the following relations are satisfied: 1.5?W1/L1?4.0 . . . (A), 0.5?W2/L2?1.5 . . . (B), 0.3?S1M/S1?0.6 . . . (C), and 0.5?S2M/S2?1.0 . . . (D).
    Type: Application
    Filed: July 5, 2016
    Publication date: July 12, 2018
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Hirofumi OBA
  • Patent number: 9724969
    Abstract: A motorcycle tire that improves straight-line traction performance and also improves turning performance is provided. In a motorcycle tire, a condition of LC/T?0.08 is satisfied for center blocks, a condition of LM/LC>1.0 is satisfied for the center blocks and intermediate blocks, and the center blocks and the intermediate blocks are either separate from each other in the tire circumferential direction, or overlap each other in the tire circumferential direction with an overlap region of 0.5 LC or less.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: August 8, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Publication number: 20150165826
    Abstract: A motorcycle tire that improves straight-line traction performance and also improves turning performance is provided. In a motorcycle tire, a condition of LC/T?0.08 is satisfied for center blocks, a condition of LM/LC>1.0 is satisfied for the center blocks and intermediate blocks, and the center blocks and the intermediate blocks are either separate from each other in the tire circumferential direction, or overlap each other in the tire circumferential direction with an overlap region of 0.5 LC or less.
    Type: Application
    Filed: December 10, 2014
    Publication date: June 18, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Hirofumi OBA
  • Patent number: D710788
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: August 12, 2014
    Assignee: Bridgestone Corporation
    Inventor: Hirofumi Oba
  • Patent number: D753581
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: April 12, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Patent number: D777084
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: January 24, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Patent number: D777085
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: January 24, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hirofumi Oba, Masafumi Ito
  • Patent number: D777096
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: January 24, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Patent number: D777647
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: January 31, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Patent number: D798225
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: September 26, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Patent number: D811318
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: February 27, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Patent number: D825438
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: August 14, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hirofumi Oba
  • Patent number: D892714
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: August 11, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hirofumi Oba, Akira Miyasato, Toshiaki Makioka
  • Patent number: D893402
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: August 18, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hirofumi Oba, Akira Miyasato, Toshiaki Makioka