Patents by Inventor Hanoch S. Elroi

Hanoch S. Elroi 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).

  • Gallic acid as a combination antioxidant, grain refiner, selective precipitant, and selective coordination ligand, in plating formulations
    Patent number: 5296128
    Abstract: This invention relates to additives for methanesulfonic acid based tin and tin alloy plating formulations. Specifically, the invention involves the use of gallic acid in the multiple roles of antioxidant, grain refiner, selective precipitant, and selective chelator in methanesulfonic acid based tin or tin alloy plating formulations.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: March 22, 1994
    Assignee: Technic Inc.
    Inventors: Michael D. Gernon, Hanoch S. Elroi, Brenda A. DeCesare, Florence P. Butler
  • Polyoxyalklene compounds terminated with ketone groups for use as surfactants in alkanesulfonic acid based solder plating baths
    Patent number: 5282953
    Abstract: Baths and methods for the electroplating of tin, tin-lead, tin-antimony, and/or tin-bismuth are described. Specifically, electrodeposition solutions, based on alkanesulfonic acids, soluble metal salts, other additives, and at least one nonionic surfactant terminated with a ketone group, have been developed. The use of ketone (e.g., --OCH.sub.2 COCH.sub.3) terminated polyoxyalkylene surfactants results in electrodeposition solutions with reduced foam, and the tin and tin alloy electrodeposits from such plating baths are of superior quality.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: February 1, 1994
    Assignee: Technic Incorporated
    Inventors: Michael D. Gernon, Harry H. Kroll, Hanoch S. Elroi