Patents by Inventor Rajan Hollmann

Rajan Hollmann 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).

  • Patent number: 11214649
    Abstract: A method for producing a shaped body, containing: producing the shaped body from a composition by a powder-based layer construction process, wherein the composition contains a thermoplastic polyurethane, obtained by reacting a polyisocyanate composition and a polyol composition, the thermoplastic polyurethane is solid at least in a temperature region below 50° C. and has end groups selected from the group consisting of first end groups and second end groups, wherein the first end groups are optionally eliminated at a first temperature, and the second end groups are optionally eliminated at a second temperature, to form reactive groups on the thermoplastic polyurethane that optionally enter into a reaction with functional groups of the thermoplastic polyurethane or functional groups of a further component of the composition, and wherein the first temperature and the second temperature are each greater than or equal to 60° C.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: January 4, 2022
    Assignee: BASF SE
    Inventors: Rajan Hollmann, Sebastian Richter, Martin Hufnagel, Hendrik Wagner
  • Publication number: 20200010607
    Abstract: A method for producing a shaped body, containing: producing the shaped body from a composition by a powder-based layer construction process, wherein the composition contains a thermoplastic polyurethane, obtained by reacting a polyisocyanate composition and a polyol composition, the thermoplastic polyurethane is solid at least in a temperature region below 50° C. and has end groups selected from the group consisting of first end groups and second end groups, wherein the first end groups are optionally eliminated at a first temperature, and the second end groups are optionally eliminated at a second temperature, to form reactive groups on the thermoplastic polyurethane that optionally enter into a reaction with functional groups of the thermoplastic polyurethane or functional groups of a further component of the composition, and wherein the first temperature and the second temperature are each greater than or equal to 60° C.
    Type: Application
    Filed: February 16, 2018
    Publication date: January 9, 2020
    Applicant: BASF SE
    Inventors: Rajan HOLLMANN, Sebastian RICHTER, Martin HUFNAGEL, Hendrik WAGNER
  • Patent number: 10329374
    Abstract: The present invention relates to a process for preparing a thermoplastic copolymer from polycaprolactam and thermoplastic polyurethane (TPU), to thermoplastic copolymers thus obtained and to shaped articles formed from copolymers of this type.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: June 25, 2019
    Assignee: BASF SE
    Inventors: Philippe Desbois, Rajan Hollmann, Dirk Kempfert, Bernd Bruchmann, Frank Thielbeer, Rolf Muelhaupt
  • Patent number: 9932612
    Abstract: The present invention relates to bacterial strains, capable of utilizing glycerol as a carbon source for the fermentative production of succinic acid, wherein said strains are genetically modified so that they comprise a deregulation of their endogenous pyruvate-formate-lyase enzyme activity, as well as to methods of producing organic acids, in particular succinic acid, by making use of such microorganism. The present invention also relates to the downstream processing of the produced organic acids by cation exchange chromatography.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: April 3, 2018
    Assignee: BASF SE
    Inventors: Hartwig Schröder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
  • Publication number: 20170362620
    Abstract: The present invention relates to a process for the fermentation of fungal strains which secrete glucans with a ?-1,3-glycosidically linked main chain and side chains ?-1,6-glycosidically bonded thereto, in a cascade of tanks using high-shear mixers.
    Type: Application
    Filed: December 8, 2015
    Publication date: December 21, 2017
    Inventors: Sebastian BRIECHLE, Rajan HOLLMANN, Tobias KÄPPLER, Florian LEHR, Julia Kristiane SCHMIDT, Stephan FREYER
  • Publication number: 20160340465
    Abstract: The present invention relates to a process for preparing a thermoplastic copolymer from polycaprolactam and thermoplastic polyurethane (TPU), to thermoplastic copolymers thus obtained and to shaped articles formed from copolymers of this type.
    Type: Application
    Filed: January 30, 2015
    Publication date: November 24, 2016
    Applicant: BASF SE
    Inventors: Philippe DESBOIS, Rajan HOLLMANN, Dirk KEMPFERT, Bernd BRUCHMANN, Frank THIELBEER, Rolf MUELHAUPT
  • Patent number: 9206348
    Abstract: A two-stage process for mineral oil production from mineral oil deposits with a deposit temperature of more than 70° C. and a salinity of 20 000 ppm to 350 000 ppm, in which an aqueous formulation comprising at least one glucan with a ?-1,3-glycosidically linked main chain, and side groups ?-1,6-glycosidically bonded thereto and having a weight-average molecular weight Mw of 1.5*106 to 25*106 g/mol, are injected into a mineral oil deposit through at least one injection borehole and crude oil is withdrawn from the deposit through at least one production borehole. The aqueous formulation is prepared in two stages, by first preparing an aqueous concentrate of the glucan, and diluting the concentrate on site with water to the use concentration.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: December 8, 2015
    Assignee: WINTERSHALL HOLDING GMBH
    Inventors: Sebastian Briechle, Tillmann Faust, Stephan Freyer, Rajan Hollmann, Tobias Käppler, Bernd Leonhardt, Julia Kristiane Schmidt, Benjamin Wenzke, Foppe Visser
  • Publication number: 20150197776
    Abstract: The present invention relates to bacterial strains, capable of utilizing glycerol as a carbon source for the fermentative production of succinic acid, wherein said strains are genetically modified so that they comprise a deregulation of their endogenous pyruvate-formate-lyase enzyme activity, as well as to methods of producing organic acids, in particular succinic acid, by making use of such microorganism. The present invention also relates to the downstream processing of the produced organic acids by cation exchange chromatography.
    Type: Application
    Filed: April 1, 2015
    Publication date: July 16, 2015
    Applicant: BASF SE
    Inventors: Hartwig Schröder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
  • Patent number: 9023632
    Abstract: The present invention relates to bacterial strains, capable of utilizing glycerol as a carbon source for the fermentative production of succinic acid, wherein said strains are genetically modified so that they comprise a deregulation of their endogenous pyruvate-formate-lyase enzyme activity, as well as to methods of producing organic acids, in particular succinic acid, by making use of such microorganism. The present invention also relates to the downstream processing of the produced organic acids by cation exchange chromatography.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: May 5, 2015
    Assignee: BASF SE
    Inventors: Hartwig Schröder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
  • Patent number: 8973655
    Abstract: A multistage process for producing mineral oil from mineral oil deposits by injecting aqueous flooding media into a mineral oil formation through injection boreholes and withdrawing the mineral oil through production boreholes, in which the mineral oil yield is increased by the use of microorganisms in combination with measures for blocking highly permeable zones of the mineral oil formation.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: March 10, 2015
    Assignee: Wintershall Holding GmbH
    Inventors: Vladimir Stehle, Rajan Hollmann, Robert Thummer
  • Patent number: 8852750
    Abstract: The present invention is directed to a method for coating a sheet-like cellulose containing material by applying a composition comprising at least one glucan (G), which has a ?(beta)-1,3-glycosidically linked main chain and at least one side group having a ?(beta)-1,6-glycosidic bond to the main chain, particularly Schizophyllan, and at least one solvent (S), particularly a ionic liquid, on the surface of the sheet-like material.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: October 7, 2014
    Assignees: Wintershall Holding GmbH, BASF SE
    Inventors: Mari Granström, Stephan Freyer, Rajan Hollmann, Julia Kristiane Schmidt, Alois Kindler
  • Patent number: 8826976
    Abstract: A process for producing mineral oil from mineral oil deposits by injecting aqueous flooding media into a mineral oil formation through injection boreholes and withdrawing the mineral oil through production boreholes, wherein the process comprises several cycles of process steps in which oil-mobilizing microorganisms and flooding water are injected alternately into the deposit. Processes in which highly permeable regions of the mineral oil formation are additionally blocked.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: September 9, 2014
    Assignee: Wintershall Holding GmbH
    Inventors: Vladimir Stehle, Rajan Hollmann, Robert Thummer
  • Publication number: 20140127764
    Abstract: The present invention relates to bacterial strains, capable of utilizing glycerol as a carbon source for the fermentative production of succinic acid, wherein said strains are genetically modified so that they comprise a deregulation of their endogenous pyruvate-formate-lyase enzyme activity, as well as to methods of producing organic acids, in particular succinic acid, by making use of such microorganism. The present invention also relates to the downstream processing of the produced organic acids by cation exchange chromatography.
    Type: Application
    Filed: January 8, 2014
    Publication date: May 8, 2014
    Applicant: BASF SE
    Inventors: Hartwig Schröder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
  • Patent number: 8673598
    Abstract: The present invention relates to bacterial strains, capable of utilizing glycerol as a carbon source for the fermentative production of succinic acid, wherein said strains are genetically modified so that they comprise a deregulation of their endogenous pyruvate-formate-lyase enzyme activity, as well as to methods of producing organic acids, in particular succinic acid, by making use of such microorganism. The present invention also relates to the downstream processing of the produced organic acids by cation exchange chromatography.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: March 18, 2014
    Assignee: BASF SE
    Inventors: Hartwig Schroder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
  • Patent number: 8574873
    Abstract: A process for the preparation of aqueous solutions of glucans having a ?-1,3-glycosidically-linked main chain and side groups having a ?-1,6-glycosidic bond by fermentation of fungal strains. The fungal strains secrete the glucans into the fermentation broth, in an aqueous culture medium, and the separation of the glucans from the fermentation broth is effected using asymmetrical filter membranes.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: November 5, 2013
    Assignee: Wintershall Holding GmbH
    Inventors: Jörg Therre, Hartwig Voβ, Julia Kristiane Schmidt, Tillmann Faust, Rajan Hollmann
  • Patent number: 8313935
    Abstract: The invention relates to a method for isolating polyhydroxyalkanoates from production cells which comprises i) disintegrating the production cells, subsequently ii) separating off the cell fragments from the polyhydroxyalkanoate grains by means of a continuous jet separator; iii) the concentrated polyhydroxyalkanoate grains are washed with an aqueous alkali solution and then iv) with an aqueous acid.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 20, 2012
    Assignee: BASF SE
    Inventors: Rajan Hollmann, Bryan Cooper, Peter Preishuber-Pfluegl, Arnold Schneller
  • Publication number: 20120270033
    Abstract: The present invention is directed to a method for coating a sheet-like cellulose containing material by applying a composition comprising at least one glucan (G), which has a ?(beta)-1,3-glycosidically linked main chain and at least one side group having a ?(beta)-1,6-glycosidic bond to the main chain, particularly Schizophyllan, and at least one solvent (S), particularly a ionic liquid, on the surface of the sheet-like material.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 25, 2012
    Applicants: Wintershall Holding GmbH, BASF SE
    Inventors: Mari Granström, Stephan Freyer, Rajan Hollmann, Julia Kristiane Schmidt, Alois Kindler
  • Publication number: 20120255729
    Abstract: A multistage process for producing mineral oil from mineral oil deposits by injecting aqueous flooding media into a mineral oil formation through injection boreholes and withdrawing the mineral oil through production boreholes, in which the mineral oil yield is increased by the use of microorganisms in combination with measures for blocking highly permeable zones of the mineral oil formation.
    Type: Application
    Filed: February 7, 2012
    Publication date: October 11, 2012
    Applicant: Wintershall Holding GmbH
    Inventors: Vladimir Stehle, Rajan Hollmann, Robert Thummer
  • Publication number: 20120205099
    Abstract: A two-stage process for mineral oil production from mineral oil deposits with a deposit temperature of more than 70° C. and a salinity of 20 000 ppm to 350 000 ppm, in which an aqueous formulation comprising at least one glucan with a ?-1,3-glycosidically linked main chain, and side groups ?-1,6-glycosidcally bonded thereto and having a weight-average molecular weight Mw of 1.5*106 to 25*106 g/mol, are injected into a mineral oil deposit through at least one injection borehole and crude oil is withdrawn from the deposit through at least one production borehole. The aqueous formulation is prepared in two stages, by first preparing an aqueous concentrate of the glucan, and diluting the concentrate on site with water to the use concentration.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 16, 2012
    Applicant: Wintershall Holding GmbH
    Inventors: Sebastian Briechle, Tillmann Faust, Stephan Freyer, Rajan Hollmann, Tobias Käppler, Bernd Leonhardt, Julia Kristiane Schmidt, Benjamin Wenzke, Foppe Visser
  • Publication number: 20120199343
    Abstract: A process for producing mineral oil from mineral oil deposits by injecting aqueous flooding media into a mineral oil formation through injection boreholes and withdrawing the mineral oil through production boreholes, wherein the process comprises several cycles of process steps in which oil-mobilizing microorganisms and flooding water are injected alternately into the deposit. Processes in which highly permeable regions of the mineral oil formation are additionally blocked.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 9, 2012
    Applicant: Wintershall Holding GmbH
    Inventors: Vladimir Stehle, Rajan Hollmann, Robert Thummer