Patents by Inventor Jack C. Rubin

Jack C. Rubin 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).

  • Cleaner for hydrophilic metal surfaces of lithographic duplicators
    Patent number: 4100096
    Abstract: Hydrophilic surfaces on lithographic duplicators are cleaned by light rubbing with a liquid composition comprising levigated alumina of small particle size, a surfactant, an aluminum salt and an acidifying agent all dispersed in water. The surface is then rinsed with water to remove the cleaning composition, and is found to be in an ink-free moisture receptive condition.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: July 11, 1978
    Assignee: Addressograph Multigraph Corp.
    Inventor: Jack C. Rubin