Patents by Inventor Sylvan Eisenberg

Sylvan Eisenberg 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).

  • Microingredient containing tracer
    Patent number: 4654165
    Abstract: A tracer particle for determining the concentration of a microingredient in a bulk material is disclosed. The tracer particle comprises a finely divided ferromagnetic particulate material approximately 90% of which is approximately 325 mesh or smaller, a microingredient and a binder wherein the microingredient and ferromagnetic material are entrapped in the binder and wherein the tracer particle is approximately 35 to 80 mesh in size.
    Type: Grant
    Filed: April 16, 1985
    Date of Patent: March 31, 1987
    Assignee: Micro Tracers, Inc.
    Inventor: Sylvan Eisenberg
  • Protected iron tracer composition and method of making
    Patent number: 4188408
    Abstract: Finely divided iron is mechanically mixed in water to add a coating to the iron particles. Present in the water to protect the iron from corrosion loss during such processing is a small amount of sodium carbonate or tri-sodium phosphate or sodium silicate. The inhibitor is adsorbed on the eventual iron particles after the water is driven off.
    Type: Grant
    Filed: July 18, 1975
    Date of Patent: February 12, 1980
    Assignee: Microtracers Inc.
    Inventor: Sylvan Eisenberg
  • Tracer-containing composition
    Patent number: 4152271
    Abstract: A dry homogeneous admixture including a bulk material, a micro-ingredient, and a solid particulate tracer in a preselected ratio to the micro-ingredient, comprising a vehicle of ground iron or other ferromagnetic material that will become magnetized by a magnetic field, but loses its magnetism in the absence of such a field. The vehicle itself serves as the tracer when used with magnetic detection techniques. Additional tracers are provided by coating the vehicle with detectable coatings such as dyes.
    Type: Grant
    Filed: January 28, 1974
    Date of Patent: May 1, 1979
    Assignee: Micro Tracers, Inc.
    Inventor: Sylvan Eisenberg
  • Tracers
    Patent number: 4029820
    Abstract: Tracer material formed of a finely powdered reduced iron carrier having adsorbed thereon sodium selenite or sodium selenate.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: June 14, 1977
    Assignee: Micro Tracers, Inc.
    Inventor: Sylvan Eisenberg