Patents by Inventor Semyon Lvovich

Semyon Lvovich 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: 4826508
    Abstract: In the production of an abrasive member, an apertured mask, preferably formed of a resin such as polyvinyl chloride, is applied to one surface of a length of flexible, preferably electrically conducting fabric. A metal, such as nickel, is electrolytically deposited on the fabric through the apertures in the mask in the presence of abrasive particles. The fabric may be in the form of a conductive mesh, in which case it can be laminated onto a tough backing material. Alternatively, tough backing material, for example made of poly-aramid yarn, can be rendered conductive by coating it with vaporized metal, the metal deposits being formed directly in the coated backing fabric. This process simplifies manufacture and allows production on a continuous basis with greater throughput at lower cost.
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: May 2, 1989
    Assignee: Diabrasive International, Ltd.
    Inventors: Alexander Schwartz, Joseph Lazar, Semyon Lvovich