Patents by Inventor Manfred Spindler

Manfred Spindler 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).

  • Use of Aqueous L-lysine solutions for supplementing feeds and indistrially produced mixed feeds with L-lysine
    Patent number: 4919945
    Abstract: To supplement feeds and industrially produced mixed feeds with L-lysine, there are used aqueous L-lysine solutions having a L-lysine content between 30 and 80 weight percent, preferably between 50 and 70 weight percent. In comparison with crystallized L-lysine, they are clearly more stable and in equimolar amounts show the same L-lysine activity as the known forms presently offered.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: April 24, 1990
    Assignee: Degussa Aktiengesellschaft
    Inventors: Manfred Spindler, Herbert Tanner
  • Use of aqueous sodium or potassium methioninate solution for supplemental mixed fodders with methionine
    Patent number: 4705689
    Abstract: In place of using solid DL-methionine for supplementing mixed fodders there are used sodium or potassium methioninate solutions. In comparison to solid methionine they are more easily dosable and can be more easily homogeneously mixed with the remaining components. Employing equimolar amounts they show the same methionine activity as solid methionine.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: November 10, 1987
    Assignee: Degussa Aktiengesellschaft
    Inventors: Herbert Tanner, Heidrun-Leonore Bertram, Reinhard Richter, Manfred Spindler
  • Process for the hydrolysis of 5-(.beta.-methylmercaptoethyl)-hydantoin
    Patent number: 4518801
    Abstract: The invention is directed to a process for the hydrolysis of 5-(.beta.-methylmercaptoethyl)-hydantoin by reaction at elevated temperature and pressure in an aqueous alkaline medium. There are obtained alkali methioninate solutions from which there can be separated methionine.
    Type: Grant
    Filed: September 7, 1984
    Date of Patent: May 21, 1985
    Inventors: Rudolf Bolze, Friedhelm Geiger, Manfred Spindler, Herbert Tanner
  • Process for the production of aqueous sodium methioninate solutions
    Patent number: 4391987
    Abstract: Aqueous sodium methioninate solutions having a low content of sodium carbonate can be recovered from the crude hydrolysis mixture resulting from the saponification of 5-(.beta.-methylmercaptoethyl)hydantoin with 1.1 to 6 equivalents of sodium hydroxide and/or sodium carbonate by cooling the crude hydrolysis mixture to a temperature below 10.degree. C., separating off the precipitated sodium carbonate and concentrating the sodium methioninate solution remaining to 40 to 65 weight percent.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: July 5, 1983
    Assignee: Degussa Aktiengesellschaft
    Inventors: Manfred Spindler, Herbert Tanner, Friedhelm Geiger, Friedrich Bittner, Jurgen Martens
  • Process for the production of aqueous sodium methioninate solutions
    Patent number: 4391988
    Abstract: Aqueous sodium methioninate solutions having a low content of sodium carbonate can be recovered from the crude hydrolysis mixture resulting from the saponification of 5-(.beta.-methylmercaptoethyl)-hydantoin with 1.1 to 6 equivalents of sodium hydroxide and/or sodium carbonate by distilling off the water from the crude hydrolysis mixture until the sodium methioninate content is 40 to 65 weight percent, and after cooling to at most room temperature separating off the precipitated sodium carbonate.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: July 5, 1983
    Assignee: Degussa Aktiengesellschaft
    Inventors: Manfred Spindler, Herbert Tanner, Friedhelm Geiger, Friedrich Bittner, Jurgen Martens