Patents by Inventor Shoiti Hayashibara

Shoiti Hayashibara 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).

  • Laser marking article and laser marking method
    Patent number: 5897938
    Abstract: The present invention relates to a laser marking article having two or more layers of thin films on the surface thereof, wherein one of the layers other than the outermost layer is a thin film made of a laser marking ground composition containing a laser beam-absorbing whitish inorganic compound powder and a binder as essential ingredients, and to a laser marking method comprising irradiating said laser marking article with a laser beam.According to the present invention, a vivid white-colored mark can be formed on the surface of an article even in case of low-energy laser irradiation or even in case of high-speed marking.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: April 27, 1999
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaki Shinmoto, Shoiti Hayashibara, Mitsuyo Nishitoh