Patents by Inventor Ryuji Kumagai

Ryuji Kumagai 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).

  • Headlight for a motor vehicle
    Patent number: D564109
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: March 11, 2008
    Assignee: Mazda Motor Corporation
    Inventors: Youichi Sato, Dai Kimura, Takeshi Shinohara, Yuki Suga, Ryuji Kumagai, Atsunori Mori
  • Motor vehicle
    Patent number: D573511
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: July 22, 2008
    Assignee: Mazda Motor Corporation
    Inventors: Youichi Sato, Dai Kimura, Tetsuji Kawakami, Ryuji Kumagai, Masashi Aikawa
  • Rear door of motor vehicle
    Patent number: D573522
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: July 22, 2008
    Assignee: Mazda Motor Corporation
    Inventors: Youichi Sato, Dai Kimura, Ryuji Kumagai
  • Bumper of motor vehicle
    Patent number: D588506
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: March 17, 2009
    Assignee: Mazda Motor Corporation
    Inventors: Ikuo Maeda, Cho Yong Wook, Ryousuke Nozaki, Ryuji Kumagai, Keisuke Nakai
  • Bumper of motor vehicle
    Patent number: D595192
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: June 30, 2009
    Assignee: Mazda Motor Corporation
    Inventors: Kunihiko Kurisu, Akira Tamatani, Kosuke Takahashi, Koji Miyamoto, Masatoshi Miyake, Ryuji Kumagai, Keisuke Nakai, Tomoyuki Suzuki
  • Bumper for motor vehicle
    Patent number: D668593
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: October 9, 2012
    Assignee: Mazda Motor Corporation
    Inventors: Shinichi Imai, Masatoshi Miyake, Yutaka Sukegawa, Ryuji Kumagai
  • Bumper for motor vehicle
    Patent number: D688989
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: September 3, 2013
    Assignee: Mazda Motor Corporation
    Inventors: Masanori Minamisawa, Takeshi Shinohara, Yukiharu Asano, Ryuji Kumagai
  • Bumper for motor vehicle
    Patent number: D698290
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: January 28, 2014
    Assignee: Mazda Motor Corporation
    Inventors: Tomoyuki Mori, Ryuji Kumagai
  • Bumper for motor vehicle
    Patent number: D701476
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: March 25, 2014
    Assignee: Mazda Motor Corporation
    Inventors: Kunihiko Kurisu, Tomoyuki Suzuki, Ryuji Kumagai
  • Bumper for motor vehicle
    Patent number: D713304
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: September 16, 2014
    Assignee: Mazda Motor Corporation
    Inventors: Yasutake Tsuchida, Yoshito Iwauchi, Masatoshi Miyake, Ryuji Kumagai
  • Motor vehicle front bumper
    Patent number: D756276
    Type: Grant
    Filed: December 28, 2014
    Date of Patent: May 17, 2016
    Assignee: Mazda Motor Corporation
    Inventors: Masanori Minamisawa, Takanori Tsubaki, Shun Yamashita, Ryuji Kumagai
  • Motor vehicle
    Patent number: D765546
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: September 6, 2016
    Assignee: Mazda Motor Corporation
    Inventors: Eiji Kimoto, Siyoung Song, Kousuke Takahashi, Takeshi Shinohara, Kaname Sawai, Ryousuke Nozaki, Tadashi Ozeki, Ryuji Kumagai, Keisuke Nakai
  • Motor vehicle
    Patent number: D819493
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: June 5, 2018
    Assignee: Mazda Motor Corporation
    Inventors: Kouji Tabata, Shinichi Isayama, Kousuke Takahashi, Takanori Tsubaki, Yutaka Sukegawa, Ryuji Kumagai
  • Motor vehicle
    Patent number: D842760
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: March 12, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yasutake Tsuchida, Takanori Tsubaki, Hiroto Arai, Kazuhisa Noda, Ryuji Kumagai
  • Motor vehicle
    Patent number: D845835
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: April 16, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yasutake Tsuchida, Takuya Obatake, Yasuo Suzuki, Ryousuke Nozaki, Ryuji Kumagai
  • Motor vehicle
    Patent number: D883881
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: May 12, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yasutake Tsuchida, Takanori Tsubaki, Kazuhisa Noda, Ryuji Kumagai
  • Motor vehicle
    Patent number: D883883
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: May 12, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yasutake Tsuchida, Takuya Obatake, Ryousuke Nozaki, Ryuji Kumagai
  • Motor vehicle
    Patent number: D922285
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: June 15, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takeshi Shinohara, Yoshito Iwauchi, Kota Akagawa, Yuuji Ishimoto, Yutaka Sukegawa, Heitetsu Takemoto, Ryuji Kumagai