Patents by Inventor Mechthild Rieping

Mechthild Rieping 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).

  • Process for the fermentative preparation of D-pantothenic acid and/or its salts
    Patent number: 6682915
    Abstract: A method for the fermentative preparation of D-pantothenic acid and/or its salts or feedstuff additives containing these. Said method comprising, fermentation of Escherichia coli microorganisms wherein the nucleotide sequence(s) coding the glyA gene is overexpressed.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: January 27, 2004
    Assignee: Degussa AG
    Inventors: Thomas Hermann, Achim Marx, Walter Pfefferle, Mechthild Rieping
  • Fermentation process for the preparation of L-threonine
    Publication number: 20030190712
    Abstract: The invention relates to a process for the fermentative preparation of L-threonine in which an L-threonine-producing microorganism of the Enterobacteriaceae family is cultured by the feed process, and a portion of the fermentation broth is then separated off in order to be utilized for inoculation of further media.
    Type: Application
    Filed: January 21, 2003
    Publication date: October 9, 2003
    Applicant: Degussa AG
    Inventors: Thomas Hermann, Mechthild Rieping
  • Process for the fermentative preparation of L-threonine
    Patent number: 6630332
    Abstract: The invention provides a process for the fermentative preparation of L-threonine using Enterobacteriaceae which in particular already produce L-threonine and in which the nucleotide sequence(s) which code(s) for the mqo gene are enhanced, in particular over-expressed.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: October 7, 2003
    Assignee: Degussa AG
    Inventors: Mechthild Rieping, Georg Thierbach, Michel Eduard Van Der Rest, Douwe Molenaar
  • Process for preparation of D-pantothenic acid and/or salts thereof
    Patent number: 6623944
    Abstract: D-pantothenic acid and/or a salt thereof or feedstuffs additives comprising these are prepared by fermentation of a microorganism of the Enterobacteriaceae family, in particular one which already produces D-pantothenic acid, wherein the nucleotide sequence(s) in the microorganism which code(s) for the poxB gene is (are) attenuated, in particular eliminated.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: September 23, 2003
    Assignee: Degussa AG
    Inventor: Mechthild Rieping
  • L-lysine-producing corynebacteria and process for the preparation of L-lysine
    Publication number: 20030162269
    Abstract: The invention relates to L-lysine-producing strains of corynebacteria with enhanced lysE gene (lysine export carrier gene), in which strains additional genes chosen from the group comprising the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the dapB gene (dihydrodipicolinate reductase gene) and the pyc gene, but especially the dapA gene and the lysC gene (aspartate kinase gene), are enhanced and, in particular, over-expressed, and to a process for the preparation of L-lysine.
    Type: Application
    Filed: January 8, 2003
    Publication date: August 28, 2003
    Inventors: Caroline Kreutzer, Stephan Hans, Mechthild Rieping, Bettina Mockel, Walter Pfefferle, Lothar Eggeling, Hermann Sahm, Miroslav Patek
  • Process for the preparation of D-pantothenic acid and/or salts thereof
    Publication number: 20030124682
    Abstract: A process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the fda gene is/are enhanced, in particular over-expressed.
    Type: Application
    Filed: June 13, 2002
    Publication date: July 3, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Hermann, Birgit Witteck, Mechthild Rieping
  • Process for the preparation of D-pantothenic acid and/or salts thereof
    Publication number: 20030124681
    Abstract: A process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the pepB gene is/are enhanced, in particular over-expressed.
    Type: Application
    Filed: June 13, 2002
    Publication date: July 3, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Hermann, Birgit Witteck, Mechthild Rieping
  • Process for the preparation of D-pantothenic acid and/or salts thereof
    Publication number: 20030119151
    Abstract: A process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the hns gene is/are enhanced, in particular over-expressed.
    Type: Application
    Filed: June 13, 2002
    Publication date: June 26, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Hermann, Birgit Witteck, Mechthild Rieping
  • Process for the preparation of D-pantothenic acid and/or salts thereof
    Publication number: 20030109012
    Abstract: A process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the mdh gene is/are enhanced, in particular over-expressed.
    Type: Application
    Filed: June 13, 2002
    Publication date: June 12, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Hermann, Birgit Witteck, Mechthild Rieping
  • Process for the preparation of D-pantothenic acid and/or salts thereof
    Publication number: 20030104583
    Abstract: A process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the bfr gene is/are enhanced, in particular over-expressed.
    Type: Application
    Filed: June 13, 2002
    Publication date: June 5, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Hermann, Birgit Witteck, Mechthild Rieping, Daniela Kruse
  • Process for the preparation of D-pantothenic acid and/or salts thereof
    Publication number: 20030100081
    Abstract: The invention relates to a process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the dldH gene is/are enhanced, in particular over-expressed.
    Type: Application
    Filed: June 13, 2002
    Publication date: May 29, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Hermann, Birgit Witteck, Mechthild Rieping
  • Process for the preparation of D-pantothenic acid and/or salts thereof
    Publication number: 20030092138
    Abstract: A process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the pgm gene is/are enhanced, in particular over-expressed.
    Type: Application
    Filed: June 13, 2002
    Publication date: May 15, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Hermann, Birgit Witteck, Mechthild Rieping
  • Fermentation process for the preparation of L-threonine
    Patent number: 6562601
    Abstract: The invention relates to a process for the fermentative preparation of L-threonine in which an L-threonine-producing microorganism of the Enterobacteriaceae family is cultured by the feed process, and a portion of the fermentation broth is then separated off in order to be utilized for inoculation of further media.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: May 13, 2003
    Assignee: Degussa AG
    Inventors: Thomas Hermann, Mechthild Rieping
  • Process for the preparation of D-pantothenic acid and/or salts thereof
    Publication number: 20030087404
    Abstract: A process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, in which the nucleotide sequence(s) in the microorganisms which code(s) for the adk gene is/are enhanced, in particular over-expressed.
    Type: Application
    Filed: June 13, 2002
    Publication date: May 8, 2003
    Applicant: DEGUSSA AG
    Inventors: Thomas Hermann, Birgit Witteck, Mechthild Rieping
  • Process for the manufacture of D-pantothene acid and/or its salts by fermentation
    Publication number: 20030073204
    Abstract: The invention provides a process for the preparation of D-pantothenic acid and/or salts thereof or feedstuffs additives comprising these by fermentation of microorganisms of the Enterobacteriaceae family, in particular those which already produce D-pantothenic acid, characterized in that the nucleotide sequence(s) in the microorganisms which code(s) for the pckA gene is (are) attenuated, in particular eliminated.
    Type: Application
    Filed: March 14, 2002
    Publication date: April 17, 2003
    Applicant: DEGUSSA AG
    Inventor: Mechthild Rieping
  • Process for the production of L-amino acids using strains of the family enterobacteriaceae that contain an attenuated aceA gene
    Publication number: 20030059903
    Abstract: A process for the production of L-amino acids, in particular L-threonine, in which the following steps are carried out:
    Type: Application
    Filed: April 3, 2002
    Publication date: March 27, 2003
    Applicant: DEGUSSA AG
    Inventors: Mechthild Rieping, Thomas Hermann
  • Process for the production of L-amino acids using strains of the family enterobacteriaceae that contain an attenuated dgsA gene
    Publication number: 20030054503
    Abstract: A process for the production of L-amino acids, in particular L-threonine, in which the following steps are carried out:
    Type: Application
    Filed: April 3, 2002
    Publication date: March 20, 2003
    Applicant: DEGUSSA AG
    Inventors: Mechthild Rieping, Thomas Hermann
  • Process for the fermentative preparation of D-pantothenic acid and/or it salts
    Publication number: 20030054502
    Abstract: A method for the fermentative preparation of D-pantothenic acid and/or its salts or feedstuffs additives containing these by the fermentation of microorganisms from the Enterobacteriaceae family in particular those which already produce D-pantothenic acid, wherein at least one of the nucleotide sequence(s) coding for the genes gcvT, gcvH and gcvP is enhanced in the microorganisms, in particular is overexpressed.
    Type: Application
    Filed: January 23, 2002
    Publication date: March 20, 2003
    Applicant: DE GUSSA AG
    Inventors: Mechthild Rieping, Thomas Hermann
  • Process for the production of L-amino acids using strains of the family enterobacteriaceae that contain an attenuated fruR gene
    Publication number: 20030049803
    Abstract: A process for the production of L-amino acids, in particular L-threonine, in which the following steps are carried out:
    Type: Application
    Filed: April 3, 2002
    Publication date: March 13, 2003
    Applicant: DEGUSSA AG
    Inventors: Mechthild Rieping, Thomas Hermann
  • Fermentation process for the preparation of L-amino acids using strains of the family enterobacteriaceae
    Publication number: 20030040103
    Abstract: The invention relates to a fermentation process for the preparation of L-amino acids, especially L-threonine, in which the following steps are carried out:
    Type: Application
    Filed: September 27, 2001
    Publication date: February 27, 2003
    Inventors: Mechthild Rieping, Christine Bastuck, Thomas Hermann, Georg Thierbach