Patents by Inventor Masahiro Inagaki, deceased

Masahiro Inagaki, deceased 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).

  • Optical information reading device
    Patent number: 5392150
    Abstract: A crystal resonant scanner has a scanning mirror which is cyclically reciprocally oscillatable for reflecting and deflecting a laser beam emitted by a laser beam source to scan an optically detectable pattern of information such as a bar code. A concave mirror is fixed in position for converging a light beam reflected off the optically detectable pattern upon scanning the optically detectable pattern with the light beam reflected by the scanning mirror. The concave mirror has a hole defined substantially centrally therein, and the scanning mirror is positioned in the hole. The light beam converged by the concave mirror is detected by a photodetector. The laser beam source and the photodetector are positioned in front of the scanning mirror and the concave mirror. The photodetector produces an electric signal indicative of the intensity of the detected light beam.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: February 21, 1995
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masahiro Inagaki, deceased, Kenzo Obata