Patents by Inventor Jacob Y. Wong

Jacob Y. Wong 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).

  • Measuring gaseous oxygen with U.V. absorption
    Patent number: 4096388
    Abstract: The concentration of oxygen in the presence of water vapor and other gases is measured without production of harmful levels of ozone by alternately passing ultraviolet light of two wavelengths through a sample, one of the wavelengths being strongly absorbed by oxygen and the other being weakly absorbed, and excluding light outside of these wavelengths.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: June 20, 1978
    Assignee: Hewlett-Packard Company
    Inventor: Jacob Y. Wong
  • Medical-analytical gas detector
    Patent number: 4075481
    Abstract: A gas analyzer is provided which is particularly suited for making transcutaneous measurement of the CO.sub.2 concentration in the blood.In accordance with one embodiment of the invention, sample gases from the body are circulated in a cavity of the device. A rotating wheel in the cavity includes two reference cells and a sample cell which are sequentially rotated into the optical path between a source and a detector. Three signals are thereby provided which may be combined to give an output indication of the CO.sub.2 concentration in the body fluids. In a preferred embodiment, the sample cell is an "inverted cell" being in open communication with the sample gas circulating in the device so that the gas in the sample cell is a portion of the circulating gas which also surrounds the two reference cells. An output indication is thereby obtained which is insensitive to contaminants in the sample.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: February 21, 1978
    Assignee: Hewlett-Packard Company
    Inventors: Paul E. Stoft, John A. Bridgham, Robert L. Chaney, Charles M. Hill, John K. D. Lazier, Barry G. Willis, Jacob Y. Wong, Moshe A. Fostick
  • Medical-analytical gas detector
    Patent number: 3987303
    Abstract: A gas analyzer is provided which is particularly suited for making transcutaneous measurement of the CO.sub.2 concentration in the blood.In accordance with one embodiment of the invention, sample gases from the body are circulated in a cavity of the device. A rotating wheel in the cavity includes two reference cells and a sample cell which are sequentially rotated into the optical path between a source and a detector. Three signals are thereby provided which may be combined to give an output indication of the CO.sub.2 concentration in the body fluids. In a preferred embodiment, the sample cell is an "inverted cell" being in open communication with the sample gas circulating in the device so that the gas in the sample cell is a portion of the circulating gas which also surrounds the two reference cells. An output indication is thereby obtained which is insensitive to contaminants in the sample.
    Type: Grant
    Filed: February 6, 1975
    Date of Patent: October 19, 1976
    Assignee: Hewlett-Packard Company
    Inventors: Paul E. Stoft, John A. Bridgham, Robert L. Chaney, Charles M. Hill, John K. D. Lazier, Barry G. Willis, Jacob Y. Wong, Moshe A. Fostick
  • Personal message center
    Patent number: D267657
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: January 18, 1983
    Inventor: Jacob Y. Wong
  • Personal message center
    Patent number: D268502
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: April 5, 1983
    Inventor: Jacob Y. Wong