Patents Assigned to Yugenkaisha Kotobukinihachi
  • Putter head for a gulf club
    Patent number: D515644
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: February 21, 2006
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa
  • Golf club
    Patent number: D515645
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: February 21, 2006
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa
  • Golf club
    Patent number: D517140
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: March 14, 2006
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa
  • Golf club
    Patent number: D517141
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: March 14, 2006
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa
  • Golf club
    Patent number: D517142
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: March 14, 2006
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa
  • Golf club
    Patent number: D524386
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: July 4, 2006
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa
  • Golf club head and a golf club head striking face
    Patent number: D537897
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: March 6, 2007
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa
  • Golf club
    Patent number: D551728
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: September 25, 2007
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa
  • Golf club
    Patent number: D571883
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: June 24, 2008
    Assignee: Yugenkaisha Kotobukinihachi
    Inventor: Katsumi Niwa