Patents Represented by Attorney Allvin Sinderbrand
  • Patent number: 3951760
    Abstract: A bright electroplated tin-cobalt alloy is obtained with an aqueous pyrophosphate electroplating bath which contains a brightening additive consisting of at least one organo-sulphur compound in combination with at least one member of the group consisting of ammonia, ammonium salts and amine compounds.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: April 20, 1976
    Assignee: Sony Corporation
    Inventors: Shimetomo Fueki, Junichi Tada, Kenji Osawa, Naomi Sakai, Kazuhiro Ogawa