Patents by Inventor Eric E. Eichhorn

Eric E. Eichhorn 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).

  • Aqueous cleaner for removing solder pastes
    Patent number: 5821208
    Abstract: Printing applicators such as metal stencils and screens used to apply solder paste to printed circuit boards are cleaned to remove accumulated solder paste therefrom by an aqueous alkaline salt cleaner. The aqueous cleaner of the present invention comprises alkaline salts such as alkali metal carbonates, a surfactant formulation which contains at least one nonionic surfactant, an alkali metal silicate corrosion inhibitor and stabilizers to maintain the components in aqueous solution. The cleaner of the present invention contains no VOCs and is an effective and safe replacement for alcohol solvents previously used to clean solder paste from screens and stencils.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: October 13, 1998
    Assignee: Church & Dwight Co., Inc.
    Inventors: Francis R. Cala, Richard A. Reynolds, Eric E. Eichhorn
  • Flux-removing aqueous cleaning composition and method of use
    Patent number: 5772789
    Abstract: An aqueous cleaning composition which is capable of removing soldering flux residues, particularly water-soluble flux residues, from a surface of an electronic assembly without leaving significant amounts of white residue on the surfaces of cleaning equipment used in the flux-removal process, contains: (A) a flux-removing portion containing an alkaline salt component composed of at least one potassium salt; and (B) an aqueous portion in which the flux-removing portion is disposed. The composition has a non-potassium alkali metal content of no greater than about 5% by weight. Preferably, the alkaline salt component consists essentially of a potassium salt or mixture of potassium salts, most preferably potassium carbonate or a mixture of potassium carbonate salts.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: June 30, 1998
    Assignee: Church & Dwight Co., Inc.
    Inventors: Eric E. Eichhorn, Francis R. Cala
  • Method of cleaning solder pastes from a substrate with an aqueous cleaner
    Patent number: 5593504
    Abstract: Printing applicators such as metal stencils and screens used to apply solder paste to printed circuit boards are cleaned to remove accumulated solder paste therefrom by an aqueous alkaline salt cleaner. The aqueous cleaner of the present invention comprises alkaline salts such as alkali metal carbonates, a surfactant formulation which contains at least one nonionic surfactant, an alkali metal silicate corrosion inhibitor and stabilizers to maintain the components in aqueous solution. The cleaner of the present invention contains no VOCs and is an effective and safe replacement for alcohol solvents previously used to clean solder paste from screens and stencils.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: January 14, 1997
    Assignee: Church & Dwight Co., Inc.
    Inventors: Francis R. Cala, Richard A. Reynolds, Eric E. Eichhorn