Patents by Inventor Rajni Hatti-Kaul

Rajni Hatti-Kaul 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: 10597506
    Abstract: The present invention relates to a process for extraction of bioplastic from bioplastic-producing microbial cells, comprising the steps of: A. providing bioplastic producing microbial cells comprising bioplastic; B. providing bacterial cells selected from the species Bacillus pumilus; C. extracting the bioplastic by admixing the bioplastic-producing microbial cells of step A and the bacterial cells of step B and allowing reaction. The present invention further relates to the process of producing monomers from said bioplastics by depolymerization.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: March 24, 2020
    Assignee: BIOEXTRAX AB
    Inventors: Mohammad H.A. Ibrahim, Mohamad Takwa, Rajni Hatti-Kaul
  • Patent number: 10053411
    Abstract: The present invention relates to a method of extracting 3-hydroxypropionaldehyde (3-HPA) and/or derivatives thereof from an aqueous solution comprising 3-HPA, the method comprising: (a) contacting the aqueous solution with chitosan and/or chitosan comprising polymers; (b) separating the 3-HPA bound chitosan and/or chitosan comprising polymers; and (c) washing the 3-HPA bound chitosan and/or chitosan comprising polymers at least once with a washing medium; wherein 3-HPA and/or derivatives thereof is in the washing medium.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: August 21, 2018
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Tarek Dishisha, Rajni Hatti Kaul, Roya R. R. Sardari, Bastian Grund, Oliver Thum
  • Publication number: 20180170851
    Abstract: The present invention relates to a method of extracting 3-hydroxypropionaldehyde (3-HPA) and/or derivatives thereof from an aqueous solution comprising 3-HPA, the method comprising: (a) contacting the aqueous solution with chitosan and/or chitosan comprising polymers; (b) separating the 3-HPA bound chitosan and/or chitosan comprising polymers; and (c) washing the 3-HPA bound chitosan and/or chitosan comprising polymers at least once with a washing medium; wherein 3-HPA and/or derivatives thereof is in the washing medium.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 21, 2018
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Tarek DISHISHA, Rajni Hatti KAUL, Roya R. R. SARDARI, Bastian GRUND, Oliver THUM
  • Publication number: 20170253713
    Abstract: The present invention relates to a process for extraction of bioplastic from bioplastic-producing microbial cells, comprising the steps of: A. providing bioplastic producing microbial cells comprising bioplastic; B. providing bacterial cells selected from the species Bacillus pumilus; C. extracting the bioplastic by admixing the bioplastic-producing microbial cells of step A and the bacterial cells of step B and allowing reaction. The present invention further relates to the process of producing monomers from said bioplastics by depolymerization.
    Type: Application
    Filed: November 25, 2015
    Publication date: September 7, 2017
    Inventors: Mohammad H.A. IBRAHIM, Mohamad TAKWA, Rajni HATTI-KAUL
  • Patent number: 9546147
    Abstract: Linear or cyclic carbonates as potential monomers for isocyanate-free polyurethanes and polycarbonates were prepared from polyols and dialkyl carbonates or diphenyl carbonates. This invention was developed to produce linear or cyclic carbonates with or without using catalysts. Polyol compounds were reacted with carbonates such as dimethyl carbonate and diethyl carbonate to produce the corresponding linear and/or cyclic carbonate.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: January 17, 2017
    Inventors: Rajni Hatti-Kaul, Sang-Hyun Pyo
  • Publication number: 20160096914
    Abstract: The present invention relates to functionalized cyclic carbonates, urethanes and polyurethanes, their methods of production and uses thereof.
    Type: Application
    Filed: May 16, 2014
    Publication date: April 7, 2016
    Applicant: CYCLICOR AB
    Inventors: Rajni HATTI-KAUL, Sang-Hyun PYO
  • Publication number: 20140235875
    Abstract: Linear or cyclic carbonates as potential monomers for isocyanate-free polyurethanes and polycarbonates were prepared from polyols and dialkyl carbonates or diphenyl carbonates. This invention was developed to produce linear or cyclic carbonates with or without using catalysts. Polyol compounds were reacted with carbonates such as dimethyl carbonate and diethyl carbonate to produce the corresponding linear and/or cyclic carbonate.
    Type: Application
    Filed: May 14, 2012
    Publication date: August 21, 2014
    Inventors: Rajni Hatti-Kaul, Sang-Hyun Pyo
  • Publication number: 20070163960
    Abstract: A method for the chromatographic separation of substances contained in a liquid sample is disclosed which method comprises providing a one piece separation tray having a spaced array of discrete identical upstanding chambers each exhibiting an open upper end and an open lower end and a separation medium placed in at least part of each upstanding chamber; applying a liquid sample to said open upper end of at least one of said upstanding chambers; then applying an eluting liquid to said open upper end of said at least one of said upstanding chambers; and collecting at least one product fraction flowing out from the open lower end of said at least one of said upstanding chambers; wherein a monolith of a compressible macroporous gel having in its liquid-swollen, non-compressed state a cross-sectional area which is 2-15%, preferably 4-12% and most preferably 5-10%, larger than the cross-sectional area of the upstanding chamber in which it is placed is used as said separation medium and is in face-to-face contact w
    Type: Application
    Filed: April 1, 2004
    Publication date: July 19, 2007
    Inventors: Bo Mattiasson, Igor Galaev, Rajni Hatti Kaul
  • Publication number: 20060142171
    Abstract: The present invention relates to a novel isolated and purified alkaline protease from Nesterenkonia sp. nov. strain, having the following characteristics: molecular weight of 23 kilodalton, melting temperature of about 74° C. at pH 7-10, calcium independent for activity and stability, maximal protease activity at pH 10, and being a serine protease, as well as a composition comprising the enzyme, method for producing the enzyme, method of degrading proteinaceous material, an isolated strain Nesterenkonia sp. nov..
    Type: Application
    Filed: September 26, 2005
    Publication date: June 29, 2006
    Inventors: Rajni Hatti-Kaul, Bo Mattiasson, Amare Gessesse
  • Publication number: 20040175788
    Abstract: A method for the separation of at least one low molecular weight bioproduct from a cell culture mixture comprising uni-cellular organisms, broth and said at least one bioproduct by passing said cell culture mixture through a bed of an adsorb-ent material to adsorb said at least one bioproduct on said adsorbent material whereas said unicellular organisms and said broth are passing through said bed, whereafter the ad-sorbed bioproduct or bioproducts is/are eluted from said bed of adsorbent material, wherein said adsorbent material on its surface is provided with a material capable of preventing non-specific adsorption of said unicellular organisms to said adsorbent material.
    Type: Application
    Filed: December 18, 2003
    Publication date: September 9, 2004
    Inventors: Igor Galaev, Rajni Hatti-Kaul, Bo Mattiasson