Patents Assigned to The San-Ai Co., Ltd.
  • Applicator for strings
    Patent number: 7033441
    Abstract: The object of the present invention is to prevent damage on surface of strings and make the strings less twistable to improve elasticity, bounce etc., and further avoiding uncomfortable touch at the moment of hitting a ball. The applicator for strings of the present invention is polydimethylsiloxane containing scourer and colorant and having viscosity of 100 to 1000 cs, which is retained in a sponge-like retainer.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: April 25, 2006
    Assignee: The San-Ai Co., Ltd.
    Inventors: Kenji Okimoto, Keiko Okimoto