Patents by Inventor Yoshiyuki Watase

Yoshiyuki Watase 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).

  • Radiation-shielding transparent material and method of producing the same
    Patent number: 4447734
    Abstract: Radiation-shielding transparent material comprising an aqueous solution of thallium formate with or without thallium malonate, the solution having a density of 2.5 to 4.3 g/cm.sup.3, a radiation length of 3.8 to 1.9 cm, and a transmission of not less than 93% for light of 400 nm wavelength. The material is produced by deoxidizing thallium formate and dissolving the deoxidized thallium formate in deoxidized distilled water.
    Type: Grant
    Filed: September 23, 1981
    Date of Patent: May 8, 1984
    Assignee: National Laboratory for High Energy Physics
    Inventors: Asao Kusumegi, Kenjiro Kondo, Yoshiyuki Watase, Yoshio Yoshimura, Kozo Miyake