Patents by Inventor Hans-Peter Loechel

Hans-Peter Loechel 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).

  • Method of treating leather
    Patent number: 4345006
    Abstract: What are disclosed are methods for treating tanned leather with a dispersion of an acrylate resin comprising certain acrylate and/or methacrylate esters, an hydroxyalkyl acrylate or methacrylate, an unsaturated polymerizable anionic compound such as an unsaturated carboxylic acid, a crosslinking monomer, and, optionally, acrylamide or methacrylamide, as well as the leathers produced by these methods.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: August 17, 1982
    Assignee: Rohm GmbH
    Inventors: Hans-Peter Loechel, Tom Cooper