Patents by Inventor Robert S. Frankel

Robert S. Frankel 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).

  • Patent number: 11975231
    Abstract: A forest fire retardant composition contains a retardant compound that includes a potassium salt. The potassium salt may include a potassium salt of an organic acid, a potassium salt of an inorganic acid, or mixtures thereof. The organic acid may include formic acid, acetic acid, propanoic acid, butanoic acid, lactic acid, oxalic acid, malic acid, gluconic acid, tartaric acid, uric acid, malic acid, or citric acid. The inorganic acid may include sulfuric acid, phosphoric acid, carbonic acid, or hydrochloric acid. The composition may be in the form of a dry concentrate, a liquid concentrate, or a final diluted product. The final diluted product is effective in suppressing, retarding, and controlling forest fires while exhibiting corrosion resistance and low toxicity.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: May 7, 2024
    Assignee: FRS Group, LLC
    Inventors: Dennis Hulbert, Robert J. Burnham, Michael S. Schnarr, Gerald Geissler, David W. Wilkening, Joseph McLellan, Michael White, Gerald S. Frankel
  • Patent number: 4512025
    Abstract: This invention provides broadband network capabilities for baseband digital collision detection transceiver equipment for communication between a plurality of data stations by affording simultaneous transmission of multiple channels over a broadband pass transmission link such as a coaxial cable. Thus, a fundamental carrier wave is transmitted on said link, received at local data stations and used to detect signals on different baseband channels for reception. For transmission the carrier wave typically is used for segregating a plurality of at least two transmission channels into typically single sideband upper and lower pass bands of baseband bandwidth capability adequately separated with guard bands to permit simple separation for receiving by means of pass band filters, etc.
    Type: Grant
    Filed: November 23, 1982
    Date of Patent: April 16, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert S. Frankel, Alexander Herman
  • Patent number: 4269499
    Abstract: The camera quadripod is formed of a pair of bipods, each having a pair of adjustable legs and each having a pair of arms which can embrace a camera. The pair of bipods cooperate together in conjunction with the camera body so that they become a quadripod and serve to support the camera. The adjustment of the legs controls the orientation of the camera. The bipods are small enough to be carried in the photographer's pocket when not in use, and are quickly and easily engaged on and removed from the camera body.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: May 26, 1981
    Inventor: Robert S. Frankel
  • Patent number: 4192601
    Abstract: The camera quadripod is formed of a pair of bipods, each having a pair of adjustable feet and each having a pair of arms which can embrace a camera. The pair of bipods cooperate together in conjunction with the camera body so that they become a quadripod and serve to support the camera. The adjustment of the legs controls the orientation of the camera. The bipods are small enough to be carried in the photographer's pocket when not in use, and are quickly and easily engaged on and removed from the camera body.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: March 11, 1980
    Inventor: Robert S. Frankel