Patents by Inventor Theodor Hopner

Theodor Hopner 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).

  • Production of paper pulp from sugar mill bagasse
    Patent number: 4260452
    Abstract: Paper pulp is produced by a process in which raw sugar mill bagasse is moist depithed, wet bulk stored in the presence of an inorganic and organic preservative, wet depithed by hydraulic shearing in the presence of an inorganic color remover, pulped, washed, cleaned and dewatered.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: April 7, 1981
    Inventors: Horst Kruger, Wilhelm Berndt, Ursula Schwartzkopff, Franz J. Reitter, Theodor Hopner, Hans-Joachim Muhlig