Patents by Inventor Hans Scheider

Hans Scheider 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).

  • Gold sulphite electroplating solutions and methods
    Patent number: 4435253
    Abstract: An electroplating bath solution comprising an alkali metal or ammonium gold sulphite, a water soluble salt of thallium metal to effect brightening and grain refining, and a non-hydroxy, non-amino carboxylic acid such as formic acid and oxalic acid to ensure that the bright gold metal deposit has a hardness lower than about 90 Knoop. The method of depositing the bright gold metal on various substrates from such electroplating solutions is also described and claimed.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: March 6, 1984
    Assignee: OMI International Corporation
    Inventors: Kenneth D. Baker, Hans Scheider