Patents by Inventor John L. Haynes

John L. Haynes 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).

  • Particle density measuring system
    Patent number: 4110604
    Abstract: A method and apparatus are provided for determining the count per unit volume, that is, the density of particles such as platelets in diluted whole blood. The invention involves use of known information, namely, the count per unit volume of other (reference) particles, such as red blood cells, also suspended in the same sample of liquid. The other particles are generally distinguishable from the particles of unknown count per unit volume by a difference in some measurable characteristic of the particles, such as size.
    Type: Grant
    Filed: September 13, 1977
    Date of Patent: August 29, 1978
    Assignee: Becton, Dickinson and Company
    Inventors: John L. Haynes, Bernard A. Shoor