Patents by Inventor Rudolf Fahnenstich

Rudolf Fahnenstich 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).

  • 4-Methylmercapto-2-acetoxy-butyraldehyde
    Patent number: 4399302
    Abstract: The invention is directed to 4-methylmercapto-2-cacetoxy-butyraldehyde of the formula ##STR1## and a process for its production by hydroformylating 3-methylmercapto-1-acetoxy-propene-1 of the formula ##STR2## 4-methylmercapto-2-acetoxy-butyraldehyde can be used as an intermediate product for the production of 4-methylmercapto-2-hydroxy-butyric acid, the hydroxy analogue of methionine.
    Type: Grant
    Filed: February 25, 1982
    Date of Patent: August 16, 1983
    Assignee: Degussa Aktiengesellschaft
    Inventors: Kleemann, Axel, Rudolf Fahnenstich, Marc Samson
  • Fodder for ruminants
    Patent number: 4241085
    Abstract: N-acyl-methionine is added to ruminant fodder.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: December 23, 1980
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Rudolf Fahnenstich, Joachim Heese, Dyfed Lewis
  • Fodder for ruminants
    Patent number: 4093740
    Abstract: N-acyl-methionine is added to ruminant fodder.
    Type: Grant
    Filed: February 16, 1973
    Date of Patent: June 6, 1978
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessier
    Inventors: Rudolf Fahnenstich, Joachim Heese, Dyfed Lewis
  • Fodder for cows
    Patent number: 4073945
    Abstract: The calcium salts of mono-hydroxymethyl lysine and bis(hydroxymethyl) lysine are prepared by reacting lysine and formaldehyde in water containing calcium ions at a pH of at least 8 and at most 12.5. The compounds are useful as fodder for ruminants.
    Type: Grant
    Filed: May 18, 1976
    Date of Patent: February 14, 1978
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Heidrun Bertram, Rudolf Fahnenstich, Heribert Offermanns, Herbert Tanner
  • Feed additive for ruminants
    Patent number: 4044169
    Abstract: N-hydroxymethyl methionine is incorporated in feeds for ruminants.
    Type: Grant
    Filed: March 10, 1976
    Date of Patent: August 23, 1977
    Assignee: Duetsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Heidrun Bertram, Rudolf Fahnenstich, Herbert Tanner
  • Preservative for fodder, mixed fodder and silage
    Patent number: 4042716
    Abstract: Fodder, mixed fodder and silage are preserved with acrylic acid, methacrylic acid or esters or salts of such acids.
    Type: Grant
    Filed: March 18, 1975
    Date of Patent: August 16, 1977
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Heidrun Bertram, Rudolf Fahnenstich, Helmut Junkermann, Gerhard Pohl, Herbert Tanner
  • Silage aid
    Patent number: 3982026
    Abstract: Propylene glycol esters of propionic acid are added to silage to improve the quality thereof.
    Type: Grant
    Filed: March 18, 1975
    Date of Patent: September 21, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Rudolf Fahnenstich, Wilhelm Schuler, Herbert Tanner, Otto Weiberg
  • Optically active salt of protected D-penicillamine and L-lysine
    Patent number: 3980665
    Abstract: D,L-penicillamine is converted to D-penicillamine with the aid of L-lysine.
    Type: Grant
    Filed: January 25, 1974
    Date of Patent: September 14, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Rudolf Fahnenstich, Joachim Heese, Heribert Offermanns
  • Feed additive for ruminants
    Patent number: 3968253
    Abstract: N-hydroxymethyl methionine is incorporated in feeds for ruminants.
    Type: Grant
    Filed: February 13, 1974
    Date of Patent: July 6, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Heidrun Bertram, Rudolf Fahnenstich, Herbert Tanner
  • Process for the stabilization of methionine
    Patent number: 3931307
    Abstract: Methionine is stabilized by adjusting the pH to the range from 3 to <5. The source of the hydantoin is preferably 5-(beta-methylmercaptoethyl)-hydantoin.
    Type: Grant
    Filed: November 30, 1973
    Date of Patent: January 6, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Gerd Eikelmann, Rudolf Fahnenstich, Theodor Lussling, Sven-Peter Mannsfeld, Gerhard Pohl, Herbert Tanner, Hans Wagner