Patents by Inventor Robert B. Leighton

Robert B. Leighton 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).

  • Technique and system for coding and identifying materials
    Patent number: 3964294
    Abstract: Microencapsulated spheroids containing a coded, volatile electron absorbing substance are dispersed into a material to be regulated such as crude oil in a tanker. Samples of the material such as an oil spill are collected and the source of the material is determined by electron capture gas chromatographic detection of the electron absorbing substance.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: June 22, 1976
    Assignee: California Institute of Technology
    Inventors: Frederick H. Shair, Peter G. Simmonds, Robert B. Leighton, Peter J. Drivas