Patents by Inventor Harold Schiller

Harold Schiller 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).

  • Slip resistant treatment
    Patent number: 5423910
    Abstract: A solution for treatment of cement, glazed or porcelain surfaces to increase the coefficient of friction of that surface, whether dry or wet to greater than 0.6, preferably to about 0.8, wherein the solution comprises about 10% phosphoric acid, less than about 40 gms. of sodium bifluoride and a wetting agent in water.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: June 13, 1995
    Assignee: Resistor Products, Inc.
    Inventor: Harold Schiller
  • Composition and method for stripping films from printed circuit boards
    Patent number: 4713144
    Abstract: A composition and method for stripping solder and the underlying tin-copper alloy from the copper substrate of a printed circuit board with a single application of the composition. An aqueous solution of nitric acid, ferric nitrate and sulfamic acid, which may be sprayed directly onto the printed circuit board for removing both the solder and the alloy.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: December 15, 1987
    Assignee: Ardrox Inc.
    Inventor: Harold Schiller
  • Fusing fluid for solder-plated circuit boards
    Patent number: 4350602
    Abstract: An improved fusing fluid or protectively coating solder-plated printed circuit conductors while they are heated to fuse the solder. Certain prior fusing fluids tend to pull away from portions of the molten solder surface, leaving them unprotected from oxidation. The improved fluid contains a small percentage of phenothiazine or a homologue, which promote complete wetting of the solder surface without causing the foaming and cleaning difficulties associated with surfactants.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: September 21, 1982
    Inventor: Harold Schiller