Patents by Inventor by Hans Rudy, heir

by Hans Rudy, heir 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).

  • Manufacture of citric acid by submerged fermentation
    Patent number: 3941656
    Abstract: The invention concerns a process for producing citric acid during which ferri- or ferrocyanide ions like potassium ferrocyanide are added at a particular time and in a preselected amount.
    Type: Grant
    Filed: November 2, 1971
    Date of Patent: March 2, 1976
    Assignee: Joh. A. Benckiser GmbH
    Inventors: Helmut Hustede, Hermann Rudy, deceased, by Liselotte Rudy, nee Ringelmann, heir, by Hans Rudy, heir, by Barbara Sallewsky, nee Rudy, heir
  • Production of citric acid by submerged fermentation
    Patent number: 3940315
    Abstract: The invention concerns the production of citric acid-producing mycelial pellets of a citric acid-producing microorganism by a selective treatment with ferrocyanide or ferricyanide ions. Known Asperigillus or Penicillium are well suited for the fermentation. The invention also concerns the production of citric acid with the pellets of the invention by submerged fermentation. The fermentation is remarkably more efficient than conventional methods, greater yields being obtained in a shorter time.
    Type: Grant
    Filed: November 2, 1971
    Date of Patent: February 24, 1976
    Assignee: Joh. A. Benckiser GmbH
    Inventors: Helmut Hustede, Herman Rudy, deceased, by Liselotte Rudy nee Ringelmann, heir, by Hans Rudy, heir, by Barbara Sallewsky nee Rudy, heir