Patents by Inventor Direj Vallabhbhai Patel

Direj Vallabhbhai Patel 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).

  • Bright levelling zinc plating
    Patent number: 4048024
    Abstract: Levelling agents for use in zinc electroplating solutions are described comprising thallous ions or a combination of peptone and thiourea. The thallous ions are preferably added to a concentration of at least 1 mg/l and the peptone-thiourea combination added to a concentration of at least 100 mg/l peptone and 50 mg/l thiourea.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: September 13, 1977
    Assignee: International Lead Zinc Research Organization, Inc.
    Inventors: Direj Vallabhbhai Patel, John Joseph Bernard Ward