Patents by Inventor Helmut Hett

Helmut Hett 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).

  • Anti-dusting formulations
    Patent number: 4069013
    Abstract: Pulverulent dyestuffs of all kinds are made highly resistant to dusting by dispersing into the powder a small amount of mineral oil that boils within the range of 140.degree. to 310.degree. C, and an emulsifier having a polyethoxy hydrophile. These additives can be premixed.
    Type: Grant
    Filed: May 21, 1976
    Date of Patent: January 17, 1978
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Helmut Hett, Kurt Walser