Patents by Inventor Juinchi Nishizawa

Juinchi Nishizawa 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).

  • Method of cleaning the reflector mirror in an optical dew point meter and an optical dew point meter equipped with a cleaning device
    Patent number: 5470154
    Abstract: A method of cleaning a reflector mirror in an optical dew point meter that measures the dew point or frost point of a sample gas by a process including the steps of bringing the sample gas into contact with the reflector mirror whose temperature is variable, projecting condensed rays of light or laser light onto said reflector mirror, and detecting the change in the intensity of scattered light and/or reflected light on account of the dew or frost formed on said reflector mirror, characterized by bringing a CO.sub.2 gas or a CO.sub.2 containing gas into contact with the reflector while the latter is in a cooled state, thereby condensing CO.sub.2 on the surface of the reflector mirror, and the subsequent step of heating the reflector mirror to vaporize the CO.sub.2 is dischosed.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: November 28, 1995
    Assignee: Osaka Sanso Kogyo Ltd.
    Inventors: Juinchi Nishizawa, Takahiko Kijima, Edward F. Ezell, Akira Makihara