Patents by Inventor Sumiko Maruyama

Sumiko Maruyama 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).

  • Electronic flash with calculator
    Patent number: 4251147
    Abstract: A speed-light, or electronic flash, having a support column provided between its light flashing part and its fitting member to be fitted with an accessory shoe of a camera body, wherein an exposure calculator device operable by a guide number is in cylindrical form so as to surround or enclose the support column.
    Type: Grant
    Filed: April 19, 1979
    Date of Patent: February 17, 1981
    Assignee: Nippon Kogaku K.K.
    Inventors: Shiro Sugimori, Tetsuro Goto, Sumiko Maruyama