Patents by Inventor Michael Petschel

Michael Petschel 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).

  • Sludge reducing zinc phosphating process and composition
    Patent number: 5900073
    Abstract: Equations have been developed to predict the amount of sludge formed during, and the values of several other characteristics of, zinc phosphating processes. Using these equations, novel compositions that achieve low sludge without sacrificing other characteristics of good zinc phosphate coatings have been discovered.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: May 4, 1999
    Assignee: Henkel Corporation
    Inventors: Michael L. Sienkowski, Michael Petschel
  • Moderate temperature manganese phosphate conversion coating composition and process
    Patent number: 5728235
    Abstract: An aqueous solution of manganese phosphate and phosphoric acid, preferably with little or no content of any material conventionally recognized as an accelerator or of any divalent metal ions other than manganese and iron, forms a good quality paint undercoating phosphate conversion coating on metal substrates, particularly on steel and galvanized steel substrates, when contacted by spraying or immersion with the substrates at a temperature of 54.degree.-65.degree. C. for a time of 0.5-5 minutes.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: March 17, 1998
    Assignee: Henkel Corporation
    Inventors: Mervet S. Boulos, David C. Montrose, Michael Petschel
  • Moderate temperature manganese phosphate conversion coating composition and process
    Patent number: 5595611
    Abstract: An aqueous solution of manganese phosphate and phosphoric acid, preferably with little or no content of any material conventionally recognized as an accelerator or of any divalent metal ions other than manganese and iron, forms a good quality paint undercoating phosphate conversion coating on metal substrates, particularly on steel and galvanized steel substrates, when contacted by spraying or immersion with the substrates at a temperature of 54.degree.-65.degree. C. for a time of 2-5 minutes.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: January 21, 1997
    Assignee: Henkel Corporation
    Inventors: Mervet S. Boulos, David C. Montrose, Michael Petschel
  • Phosphate conversion coating and compositions and concentrates therefor with stable internal accelerator
    Patent number: 5378292
    Abstract: The following water soluble materials are all satisfactory internal accelerators for otherwise conventional zinc phosphate conversion coating solutions: reducing sugars, starch, urea, and poly{acrylates and methacrylates}. Concentrates including these ingredients and otherwise conventional constituents of zinc phosphate conversion coating compositions, except for excluding conventional accelerators other than nitrate, are stable in composition during storage, unlike most conversion coating compositions containing conventional accelerators. Thus concentrates according to the invention are practical single-package concentrates that can be made into working phosphating compositions by dilution with water only.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: January 3, 1995
    Assignee: Henkel Corporation
    Inventors: Robert W. Miller, Michael Petschel