Patents by Inventor Shiro Ishiwatari

Shiro Ishiwatari 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).

  • Electrophoretic apparatus
    Patent number: 4680102
    Abstract: An electrophoretic apparatus for effecting an electrophoresis by conducting an electrophoretic current through a substrate on which a sample has been applied, while the substrate is maintained in a wetted condition with a buffer solution includes a device for detecting a variation of an expansion length of fraction images and a device for controlling a condition of the electrophoretic operation. Further a condition of the buffer solution is monitored and the buffer solution is fully or partially replaced by a fresh buffer solution.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: July 14, 1987
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Shiro Ishiwatari
  • Sealing aid for fastening a resilient plug inserted into an opening of a container
    Patent number: 4482071
    Abstract: A rubber plug is inserted into a opening of a neck portion of container airtightly and is covered with a seal cap made of an aluminum thin plate. The seal cap has slit-like cutout lines along which the seal cap is to be separated into two halves and is covered with an outer cap made of elastic material. The seal cap is connected to the outer cap at one or two positions. Therefore, the seal cap can be removed from the container by one operation of pulling-up the outer cap, and it is possible to reduce an injury caused by the seal cap.
    Type: Grant
    Filed: October 13, 1982
    Date of Patent: November 13, 1984
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Shiro Ishiwatari