Patents by Inventor Ichiya Hayakawa

Ichiya Hayakawa 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).

  • Pulsed-DC ionizer
    Patent number: 5249094
    Abstract: An ionizer having a pair of electrodes for generating ions by corona discharge when a pulsed DC voltage is applied thereto, wherein each electrode is covered with a microporous glass tube. Release of fine particles is thereby substantially eliminated, the generation of ions not being decreased.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: September 28, 1993
    Assignees: Asahi Glass Company Ltd., Techno Ryowa Ltd., Ichiya Hayakawa
    Inventors: Ichiya Hayakawa, Kazuo Nakamura, Masanori Suzuki