Patents by Inventor Tatsuya Inamiya

Tatsuya Inamiya 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).

  • Patent number: 5206466
    Abstract: A speaker diaphragm includes a combined fiber paper made with crushed silk chips and a crushed bast fiber. In the preferred embodiment, the bast fiber is a natural Manila hemp fiber. The silk fiber contributes vibration damping to the diaphragm while the bast fiber contributes strength and stiffness. The crushed silk chips and the crushed bast are mixed with water to produce a slurry from which the water is drained to produce the combined fiber paper. In a further embodiment of the invention, a layer of a different material is disposed between two layers of the combined filter paper. The layer of different material is selected from a hard wound silk gauze, a glass fiber, a polyamid fiber and a carbon fiber.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: April 27, 1993
    Assignee: Sansui Electric Co., Ltd.
    Inventor: Tatsuya Inamiya