Patents by Inventor Martin Leemann

Martin Leemann 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).

  • Method for producing D-pantothenic acid and/or salts thereof via purification by electrodialysis as an additive for animal feed
    Patent number: 7824891
    Abstract: The invention relates to an improved method for producing D-pantothenic acid and/or salts thereof and to the use thereof as an additive for animal feed.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: November 2, 2010
    Assignee: Basf SE
    Inventors: Kai-Uwe Baldenius, Christine Beck, Andreas Fischer, Hans-Peter Harz, Markus Lohscheidt, Martin Leemann
  • Method for producing D-pantothenic acid and/or salts thereof via purification by anion exchange as an additive for animal feed
    Patent number: 7727748
    Abstract: The invention relates to an improved method for producing D-pantothenic acid and/or the salts thereof and to the use thereof as an additive for animal feed.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: June 1, 2010
    Assignee: BASF SE
    Inventors: Christine Beck, Hans-Peter Harz, Daniela Klein, Martin Leemann, Markus Lohscheidt
  • Method for the production of D-pantothenic acid and/or salts thereof via purification by nanofiltration as adjunct for animal feedstuffs
    Patent number: 7611872
    Abstract: The invention relates to an improved method for the production of D-pantothenic acid and/or salts thereof and use thereof as adjunct for animal feedstuffs.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: November 3, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Christine Beck, Hans-Peter Harz, Daniela Klein, Martin Leemann, Markus Lohscheidt, Stefan Bitterlich, Hartwig Voβ
  • Method for producing d-pantothenic acid and/or salts thereof as an additive for animal feed
    Publication number: 20040077057
    Abstract: The invention relates to an improved method for producing D-pantothenic acid and/or the salts thereof and to the use thereof as an additive for animal feed.
    Type: Application
    Filed: August 21, 2003
    Publication date: April 22, 2004
    Inventors: Christine Beck, Hans-Peter Harz, Daniela Klein, Martin Leemann, Markus Lohscheidt
  • Method for producing d-pantothenic acid and/or salts thereof as an additive for animal feed
    Publication number: 20040072306
    Abstract: The invention relates to an improved method for producing D-pantothenic acid and/or salts thereof and to the use thereof as an additive for animal feed.
    Type: Application
    Filed: August 21, 2003
    Publication date: April 15, 2004
    Inventors: Kai-Uwe Baldenius, Andreas Fischer, Christine Beck, Hans-Peter Harz, Markus Lohscheidt, Martin Leemann
  • Method for the production of d-pantothenic acid and/or salts thereof as adjunct for animal feedstuffs
    Publication number: 20040053374
    Abstract: The invention relates to an improved method for the production of D-pantothenic acid and/or salts thereof and use thereof as adjunct for animal feedstuffs.
    Type: Application
    Filed: August 21, 2003
    Publication date: March 18, 2004
    Inventors: Christine Beck, Hans-Peter Harz, Daniela Klein, Martin Leemann, Markus Lohscheidt, Stefan Bitterlich, Hartwig Voss
  • Method for the production of polyamides
    Patent number: 6569988
    Abstract: In a process for producing polyamides, a mixture comprising hexamethylenediamine and aminocapronitrile and obtained from the hydrogenation of adiponitrile is reacted with water and a dicarboxylic acid.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: May 27, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Ralf Mohrschladt, Volker Hildebrandt, Dieter Krauss, Martin Leemann
  • Production of polyamides by reactive distillation
    Patent number: 6358373
    Abstract: The preparation of polyamides, their oligomers or mixtures thereof, where appropriate with other reaction products, takes place by reacting amino nitrites (A) and, where appropriate, other polyamide-forming monomers and/or oligomers with water (D) in a reactive distillation, wherein the reaction product (P) is discharged from the bottom of the reactive distillation apparatus, and ammonia (N) which is produced and, where appropriate, other low molecular weight compounds which are produced, and water, are taken off overhead.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: March 19, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Leemann, Volker Hildebrandt, Heino Thiele, Stefan Espig