Patents by Inventor Paul Prave

Paul Prave 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).

  • Bacteriolytic enzyme product from streptomyces, a process for its preparation, and a strain suitable for this purpose
    Patent number: 4828998
    Abstract: The strain Streptomyces coelicolor DSM 3030 excretes into the fermentation medium high yields of a bacteriolytic enzyme product which is very active against Gram-positive and Gram-negative bacteria. Preferred fermentation media contain sugar beet molasses and/or calcium ions.
    Type: Grant
    Filed: November 6, 1985
    Date of Patent: May 9, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Wohner, Hartmut Voelskow, Paul Prave, Erich Luck, Gert-Wolfhard von Rymon Lipinski
  • Process for improving the gas distribution in air-lift loop reactors
    Patent number: 4545945
    Abstract: In a process for improving the gas distribution in air-lift loop reactors, the back-flowing, partially degassed liquid is divided into part streams prior to, during or after entry into the rising part of the loop. In this process, the cross-section of the sum of the part streams is intended to be smaller than the free cross-section of the rising part. The gas is passed into the part streams.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: October 8, 1985
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Paul Prave, Wolfgang Sittig
  • Process for the continuous fermentation of aqueous slurries for the production of alcohol and yeast biomass
    Patent number: 4346113
    Abstract: A continuous process for the production of alcohol and yeast biomass by reaction in a uniform fermenting mixture of a sugar-bearing, aqueous slurry, starter yeast, yeast nutrients and an oxygen-bearing gas, wherein the yeast is a flocculating, bottom yeast, the portion of the wort which remains after separation of the alcohol-bearing medium therefrom, is recycled to the fermenting mixture, the oxygen-bearing gas is dispersed homogeneously throughout the fermenting mixture, and is introduced to maintain a mean-free oxygen concentration not greater than 1 ppm in the aqueous phase, and the process is controlled to maintain the measurable free sugar concentration in the fermenting mixture at a level which does not exceed 0.1 percent by weight, and to maintain the active yeast concentration in the fermenting mixture between 100 and 110 percent of the specific degree of fermentation.
    Type: Grant
    Filed: September 18, 1980
    Date of Patent: August 24, 1982
    Assignee: UHDE GmbH
    Inventors: Uwe Faust, Paul Prave, Beate Dorsemagen, Norbert Hofer
  • Process for the preparation of single cell protein using Methylmonas clara ATCC 31226
    Patent number: 4166004
    Abstract: A process for the preparation of a biomass is disclosed by cultivation of bacteria of the genus Methylomonas under aerobic conditions in a nutrient medium containing methanol as the sole carbon source, nitrogen sources and essential mineral salts, which comprises using a strain of the species Methylomonas clara ATCC 31226. The single cell protein thus obtained has a low content of nucleic acids, fats and carbohydrates and is especially suitable to prepare food and feed.
    Type: Grant
    Filed: July 21, 1977
    Date of Patent: August 28, 1979
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Paul Prave, Dieter Sukatsch, Uwe Faust