Patents by Inventor Erich P. Frieser

Erich P. Frieser 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).

  • Liquid all-purpose cleaning preparations containing terpene and hydrogenated naphthalene as fat dissolving agent
    Patent number: 4790951
    Abstract: Liquid all-purpose preparations of the type containing anionic and/or nonionic surfactants, water soluble builders, and water-soluble solvents are significantly improved by the inclusion of a fat-dissolving agent consisting essentially of a terpene and a solvent based on completely or partially hydrogenated naphthalene.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: December 13, 1988
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Erich P. Frieser, Alexander Jainschig