Patents by Inventor Kazuko Ogino

Kazuko Ogino 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).

  • Etchant, detergent and device/apparatus manufacturing method
    Patent number: 5409569
    Abstract: An etchant which generates neither heat nor gas during the process, does not sublimate, is stable for a long period of time, requires no special pipings, and further requires no special treatment of waste water because of containing no organic solvents. The etchant is a solution containing hydrofluoric acid and an-oxoacid or oxoacid salt compound expressed by Mm(XOn)p (where M is hydrogen, one-to three-valence metal or NH.sub.4, m is 1 or 5, X is a halogen element, n is 3, 4 or 6, and p is 1, 2 or 3).
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: April 25, 1995
    Assignee: Alps Electric Co., Ltd.
    Inventors: Hitoshi Seki, Satoshi Miyazawa, Tadahiro Ohmi, Kazuko Ogino, Akira Abe, Tsutomu Nakamura, Hirofumi Fukui, Yasuhiko Kasama