Patents by Inventor Ikuo Inagawa

Ikuo Inagawa 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).

  • Process for producing chalcogenide glass fiber
    Patent number: 4908053
    Abstract: A process for producing a chalcogenide glass fiber which comprises placing a cylindrical chalcogenide glass preform vertically in a cylindrical crucible furnished with a nozzle in its bottom portion, heating the crucible only at vicinity of the nozzle, and continuously drawing the glass into a fiber with the temperature of the crucible at the vicinity of the nozzle being maintained at such a level that the viscosity of the glass is within the range of 10.sup.3 to 10.sup.7.5 poises.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: March 13, 1990
    Assignee: Non Oxide Glass Research and Development Co., Ltd.
    Inventors: Junji Nishii, Ikuo Inagawa, Takashi Yamagishi, Shozo Morimoto, Ryuji Iizuka