Patents by Inventor Herbert M. Conrad

Herbert M. Conrad 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 preparing a dispensing pad for fingerprinting reagents
    Patent number: 3960632
    Abstract: An inkless fingerprinting system comprises a porous, non-yielding reagent pad saturated with a substantially colorless metallic salt solution, preferably based on ferric chloride, and means for applying an organic developer, preferably 8-hydroxyquinoline, to a latent fingerprint obtained by pressing the distal surface of a finger against the reagent pad and transferring the reagent adhering to the ridges of the finger onto a paper or plastic surface. The reagent and the developer interact to form a colored chelate and, thereby, render the fingerprint visible.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: June 1, 1976
    Assignee: Veriprint Systems Corporation
    Inventors: Jerome Gaines, Herbert M. Conrad