Patents by Inventor Hans E. Sylvest

Hans E. Sylvest 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 making straw briquettes
    Patent number: 4810446
    Abstract: Procedure for the manufacture of briquettes or pills for stoking made of stems from grain or straw or similar cellulosic waste material with the admixture of a binding agent. Compressing, principally by trace or piston pressing, at a pressure temporarily raising the temperature in the straw briquette to an area between 75.degree. C. and 200.degree. C., characterized by mixing stems with straw or similar waste material from pulses and/or protein plants to be used as binding agent.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: March 7, 1989
    Inventor: Hans E. Sylvest