Patents by Inventor Cristian Grigoras

Cristian Grigoras 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).

  • Publication number: 20230407106
    Abstract: Disclosed are architectural compositions, including aqueous paint and stain compositions, that utilized copolymers including bio-based cross-linking monomers and their synthetic analogues that are comparable to copolymers including DAAM cross-linking monomers. The bio-based cross-linking monomers are preferably synthetic version of the bio-based cross-linking monomers.
    Type: Application
    Filed: July 18, 2023
    Publication date: December 21, 2023
    Inventors: Yong Yang, Gary Dandreaux, Cristian Grigoras, Changfeng Chen, Richard Geurtsen
  • Publication number: 20230279168
    Abstract: Disclosed herein is a frambinone methacrylate (FMA) or raspberry ketone methacrylate (RKMA) monomer having the following structure: and a zingerone methacrylate (ZMA) having the following structure Also disclosed are homopolymers and co-polymers utilizing same monomer. Also disclosed is a class of methacrylate monomers comprising a bio-based moiety and a reactive ketone moiety. Also disclosed are paint compositions made with a copolymer including FMA and/or ZMA.
    Type: Application
    Filed: August 10, 2021
    Publication date: September 7, 2023
    Inventors: Richard Geurtsen, Yong Yang, Gary Dandreaux, Cristian Grigoras
  • Patent number: 11718697
    Abstract: Disclosed herein is an aqueous latex composition comprising a substantially acrylic core-shell latex, wherein a water-retaining monomer is copolymerized to the shell. The Tg of the core ranges from about 0° C. to about 12° C., and the Tg of the shell ranges from about 13° C. to about 40° C. The mean volume average particle size of the latex ranges from about 125 nm to about 200 nm. The core-shell latex comprises at least one acrylic monomer having a solubility that ranges about 10 g/L to about 30 g/L at 30° C., and this at least one acrylic monomer is present in the shell polymer in an amount greater than about 50 wt. % of all monomers in the shell. Preferably, the at least one acrylic monomer is methyl methacrylate.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: August 8, 2023
    Assignee: Columbia Insurance Company
    Inventors: Cristian Grigoras, Yong Yang, Rogina Saad, Richard Geurtsen
  • Publication number: 20220403085
    Abstract: Disclosed herein is an aqueous latex composition comprising a substantially acrylic core-shell latex, wherein a water-retaining monomer is copolymerized to the shell. The Tg of the core ranges from about 0° C. to about 12° C., and the Tg of the shell ranges from about 13° C. to about 40° C. The mean volume average particle size of the latex ranges from about 125 nm to about 200 nm. The core-shell latex comprises at least one acrylic monomer having a solubility that ranges about 10 g/L to about 30 g/L at 30° C., and this at least one acrylic monomer is present in the shell polymer in an amount greater than about 50 wt. % of all monomers in the shell. Preferably, the at least one acrylic monomer is methyl methacrylate.
    Type: Application
    Filed: August 8, 2022
    Publication date: December 22, 2022
    Inventors: Cristian Grigoras, Yong Yang, Rogina Saad, Richard Geurtsen
  • Patent number: 11447591
    Abstract: Disclosed herein is an aqueous latex composition comprising a substantially acrylic core-shell latex, wherein a water-retaining monomer is copolymerized to the shell. The Tg of the core ranges from about 0° C. to about 12° C., and the Tg of the shell ranges from about 13° C. to about 40° C. The mean volume average particle size of the latex ranges from about 125 nm to about 200 nm. The core-shell latex comprises at least one acrylic monomer having a solubility that ranges about 10 g/L to about 30 g/L at 30° C., and this at least one acrylic monomer is present in the shell polymer in an amount greater than about 50 wt. % of all monomers in the shell. Preferably, the at least one acrylic monomer is methyl methacrylate.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: September 20, 2022
    Assignee: Columbia Insurance Company
    Inventors: Cristian Grigoras, Yong Yang, Rogina Saad, Richard Geurtsen
  • Patent number: 9868798
    Abstract: The present invention provides amic acids and imides derived from a polymer comprising: (a) maleic anhydride, (b) a first C1-C7 alkyl vinyl ether monomer, and (c) a second C8-C30 alkyl vinyl ether monomer, wherein the polymer contains an amic acid or an imide group. The polymers containing an amic acid or an imide group of the invention may be employed in a wide variety of compositions, particularly in oral care compositions. Non-limiting generic structures of the amidic polymers are set out below: (I) wherein R1-R3, M, a, b, c, d, e, and f are defined herein.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: January 16, 2018
    Assignee: ISP Investments LLC
    Inventors: Osama M. Musa, Krishnamurthy Nacharaju, Cristian Grigoras
  • Publication number: 20170101485
    Abstract: The present invention provides amic acids and imides derived from a polymer comprising: (a) maleic anhydride, (b) a first C1-C7 alkyl vinyl ether monomer, and (c) a second C8-C30 alkyl vinyl ether monomer, wherein the polymer contains an amic acid or an imide group. The polymers containing an amic acid or an imide group of the invention may be employed in a wide variety of compositions, particularly in oral care compositions. Non-limiting generic structures of the amidic polymers are set out below: (I) wherein R1-R3, M, a, b, c, d, e, and f are defined herein.
    Type: Application
    Filed: March 17, 2015
    Publication date: April 13, 2017
    Applicant: ISP Investments LLC
    Inventors: Osama M. MUSA, Krishnamurthy NACHARAJU, Cristian GRIGORAS
  • Publication number: 20160075814
    Abstract: In one aspect, the present invention is directed to methods for modification of functionalized substrates. In another aspect, the invention relates to systems and methods for fabricating multilayer polymer compositions. In certain embodiments, the multilayer polymer compositions described herein can comprise heterobifunctional polymers and heterotrifunctional molecules.
    Type: Application
    Filed: March 17, 2015
    Publication date: March 17, 2016
    Inventors: Jeffrey T. KOBERSTEIN, Hernan R. RENGIFO, Cristian GRIGORAS, Jeffrey LANCASTER
  • Publication number: 20160067167
    Abstract: The present invention provides oral care compositions for treating tooth sensitivity. The composition comprises a synergistic mixture containing a copolymer having at least one repeating unit of alkyl vinyl ether functionality and a monomer having at least one repeating unit of ethylenically unsaturated dicarboxylic acid or anhydride functionality present in an amount of about 0.1 to about 50% (w/w) of the total mixture; and a homo polymer having repeating unit of alkyl vinyl ether functionality present in an amount of about 0.1 to about 50% (w/w) of the total mixture. These synergistic mixtures of polymers act as barriers for dentin flow and reduce pain and discomfort caused by tooth sensitivity and exhibits at least 60% average reduction in dentin flow.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 10, 2016
    Applicant: ISP INVESTMENTS INC.
    Inventors: William E. Prosise, Gillian Giannone, Jeffrey Lynn, Cristian Grigoras, Jenn Shih
  • Patent number: 9163102
    Abstract: Branched polymers are prepared from at least (A) at least one monomer having an electron donor moiety, (B) at least one monomer having an electron acceptor moiety, and (C) at least one multifunctional branching agent comprising a urea moiety and at least two N-vinyl groups. The branched polymers are least 20% (by weight) soluble in a solvent for which the corresponding polymer of equal molecular weight made without said multifunctional branching agent is at least 20% (by weight) soluble. Due in part to the wide range of chemistries and solubility and rheological properties, the branched polymers find application in personal care, pharmaceutical/nutritional, and performance chemicals compositions.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: October 20, 2015
    Assignee: ISP INVESTMENTS INC.
    Inventors: Cristian Grigoras, Krystyna Plochocka, Osama M. Musa, Jenn Shih
  • Publication number: 20150243995
    Abstract: The presently disclosed and/or claimed inventive concept(s) relates to a binder composition comprising a cross-linked polymer system. The cross-linked polymer system comprises an ionizable water soluble polymer cross-linked with a component using an esterification catalyst and/or an epoxy resin with two or more epoxide groups. The presently disclosed and/or claimed inventive concept(s) also relates generally to the compositions and methods of making electrodes, in particular but without limitation, anodes, with a binder composition comprising an ionizable water soluble polymer cross-linked with a component.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 27, 2015
    Inventors: Sung Gun Chu, Alan Edward Goliaszewski, Shufu Peng, Cristian Grigoras
  • Patent number: 8993068
    Abstract: In one aspect, the present invention is directed to methods for modification of functionalized substrates. In another aspect, the invention relates to systems and methods for fabricating multilayer polymer compositions. In certain embodiments, the multilayer polymer compositions described herein can comprise heterobifunctional polymers and heterotrifunctional molecules.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: March 31, 2015
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Jeffrey T. Koberstein, Hernan R. Rengifo, Cristian Grigoras, Jeffrey Lancaster
  • Publication number: 20140303313
    Abstract: Branched polymers are prepared from at least (A) at least one monomer having an electron donor moiety, (B) at least one monomer having an electron acceptor moiety, and (C) at least one multifunctional branching agent comprising a urea moiety and at least two N-vinyl groups. The branched polymers are least 20% (by weight) soluble in a solvent for which the corresponding polymer of equal molecular weight made without said multifunctional branching agent is at least 20% (by weight) soluble. Due in part to the wide range of chemistries and solubility and rheological properties, the branched polymers find application in personal care, pharmaceutical/nutritional, and performance chemicals compositions.
    Type: Application
    Filed: November 30, 2012
    Publication date: October 9, 2014
    Applicant: ISP INVESTMENTS INC.
    Inventors: Cristian Grigoras, Krystyna Plochocka, Osama M. Musa, Jenn Shih
  • Publication number: 20120021200
    Abstract: In one aspect, the present invention is directed to methods for modification of functionalized substrates. In another aspect, the invention relates to systems and methods for fabricating multilayer polymer compositions. In certain embodiments, the multilayer polymer compositions described herein can comprise heterobifunctional polymers and heterotrifunctional molecules.
    Type: Application
    Filed: November 4, 2009
    Publication date: January 26, 2012
    Inventors: Jeffrey T. Koberstein, Hernan R. Rengifo, Cristian Grigoras