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).
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Patent number: 11214649Abstract: 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: GrantFiled: February 16, 2018Date of Patent: January 4, 2022Assignee: BASF SEInventors: Rajan Hollmann, Sebastian Richter, Martin Hufnagel, Hendrik Wagner
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Publication number: 20200010607Abstract: 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: ApplicationFiled: February 16, 2018Publication date: January 9, 2020Applicant: BASF SEInventors: Rajan HOLLMANN, Sebastian RICHTER, Martin HUFNAGEL, Hendrik WAGNER
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Patent number: 10329374Abstract: 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: GrantFiled: January 30, 2015Date of Patent: June 25, 2019Assignee: BASF SEInventors: Philippe Desbois, Rajan Hollmann, Dirk Kempfert, Bernd Bruchmann, Frank Thielbeer, Rolf Muelhaupt
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Patent number: 9932612Abstract: 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: GrantFiled: April 1, 2015Date of Patent: April 3, 2018Assignee: BASF SEInventors: Hartwig Schröder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
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Publication number: 20170362620Abstract: 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: ApplicationFiled: December 8, 2015Publication date: December 21, 2017Inventors: Sebastian BRIECHLE, Rajan HOLLMANN, Tobias KÄPPLER, Florian LEHR, Julia Kristiane SCHMIDT, Stephan FREYER
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Publication number: 20160340465Abstract: 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: ApplicationFiled: January 30, 2015Publication date: November 24, 2016Applicant: BASF SEInventors: Philippe DESBOIS, Rajan HOLLMANN, Dirk KEMPFERT, Bernd BRUCHMANN, Frank THIELBEER, Rolf MUELHAUPT
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Patent number: 9206348Abstract: 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: GrantFiled: February 13, 2012Date of Patent: December 8, 2015Assignee: WINTERSHALL HOLDING GMBHInventors: Sebastian Briechle, Tillmann Faust, Stephan Freyer, Rajan Hollmann, Tobias Käppler, Bernd Leonhardt, Julia Kristiane Schmidt, Benjamin Wenzke, Foppe Visser
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Publication number: 20150197776Abstract: 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: ApplicationFiled: April 1, 2015Publication date: July 16, 2015Applicant: BASF SEInventors: Hartwig Schröder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
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Patent number: 9023632Abstract: 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: GrantFiled: January 8, 2014Date of Patent: May 5, 2015Assignee: BASF SEInventors: Hartwig Schröder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
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Patent number: 8973655Abstract: 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: GrantFiled: February 7, 2012Date of Patent: March 10, 2015Assignee: Wintershall Holding GmbHInventors: Vladimir Stehle, Rajan Hollmann, Robert Thummer
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Patent number: 8852750Abstract: 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: GrantFiled: March 28, 2012Date of Patent: October 7, 2014Assignees: Wintershall Holding GmbH, BASF SEInventors: Mari Granström, Stephan Freyer, Rajan Hollmann, Julia Kristiane Schmidt, Alois Kindler
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Patent number: 8826976Abstract: 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: GrantFiled: February 7, 2012Date of Patent: September 9, 2014Assignee: Wintershall Holding GmbHInventors: Vladimir Stehle, Rajan Hollmann, Robert Thummer
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Publication number: 20140127764Abstract: 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: ApplicationFiled: January 8, 2014Publication date: May 8, 2014Applicant: BASF SEInventors: Hartwig Schröder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
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Patent number: 8673598Abstract: 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: GrantFiled: February 12, 2010Date of Patent: March 18, 2014Assignee: BASF SEInventors: Hartwig Schroder, Stefan Haefner, Gregory Von Abendroth, Rajan Hollmann, Aline Raddatz, Hansgeorg Ernst, Hans Gurski
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Patent number: 8574873Abstract: 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: GrantFiled: December 14, 2010Date of Patent: November 5, 2013Assignee: Wintershall Holding GmbHInventors: Jörg Therre, Hartwig Voβ, Julia Kristiane Schmidt, Tillmann Faust, Rajan Hollmann
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Patent number: 8313935Abstract: 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: GrantFiled: June 30, 2009Date of Patent: November 20, 2012Assignee: BASF SEInventors: Rajan Hollmann, Bryan Cooper, Peter Preishuber-Pfluegl, Arnold Schneller
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Publication number: 20120270033Abstract: 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: ApplicationFiled: March 28, 2012Publication date: October 25, 2012Applicants: Wintershall Holding GmbH, BASF SEInventors: Mari Granström, Stephan Freyer, Rajan Hollmann, Julia Kristiane Schmidt, Alois Kindler
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Publication number: 20120255729Abstract: 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: ApplicationFiled: February 7, 2012Publication date: October 11, 2012Applicant: Wintershall Holding GmbHInventors: Vladimir Stehle, Rajan Hollmann, Robert Thummer
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Publication number: 20120205099Abstract: 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: ApplicationFiled: February 13, 2012Publication date: August 16, 2012Applicant: Wintershall Holding GmbHInventors: Sebastian Briechle, Tillmann Faust, Stephan Freyer, Rajan Hollmann, Tobias Käppler, Bernd Leonhardt, Julia Kristiane Schmidt, Benjamin Wenzke, Foppe Visser
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Publication number: 20120199343Abstract: 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: ApplicationFiled: February 7, 2012Publication date: August 9, 2012Applicant: Wintershall Holding GmbHInventors: Vladimir Stehle, Rajan Hollmann, Robert Thummer