Patents by Inventor Erwin Hechler

Erwin Hechler 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).

  • Means and method for neutral sizing
    Patent number: 4591412
    Abstract: A composition of matter for the neutral sizing of paper, paperboard, cardboard and other cellulose containing materials, is disclosed comprising water; a solvent which is unlimitedly miscible with water, particularly alcohol; a compound which undergoes a basic reaction; alkali aluminate; and a sizing component. When sizing is effected with this agent, the fiber containing suspension is mixed with a retention agent, before or after the addition of the sizing agent, with the sizing agent being activated by way of neutralization.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: May 27, 1986
    Assignee: Giulini Chemie GmbH
    Inventor: Erwin Hechler