Patents by Inventor Lap Y. Lee

Lap Y. Lee 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).

  • Spectrophotometric measurement in a chemical testing apparatus
    Patent number: 4229179
    Abstract: In a spectrophotometric measuring apparatus sample liquid is pumped into a substantially cylindrical cuvette having an internal dimension such that a meniscus of a leading edge of a liquid sample pumped therethrough is maintained. Radiant energy directed through the sample liquid is directed across the path of fluid flow rather than along the length thereof. Consequently, spectrophotometric measurement is performed using a significantly reduced optical pathlength.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: October 21, 1980
    Assignee: Hycel, Inc.
    Inventor: Lap Y. Lee