Patents by Inventor Tatiana N. Romanova

Tatiana N. Romanova 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).

  • Polymeric dispersants and dispersions containing same
    Patent number: 8530569
    Abstract: A polyalkyl benzimide polymeric dispersant produced from the reaction product of polyisobutylene amine with 1,2,4-benzenetricarboxylic anhydride, and method of preparing same and colorant dispersions containing dispersant.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: September 10, 2013
    Assignee: Sun Chemical Corporation
    Inventors: Gregory T. Huber, Tatiana N. Romanova, Russel J. Schwartz, Terence R. Chamberlain
  • POLYMERIC DISPERSANTS
    Publication number: 20120260825
    Abstract: Dispersants for pigments as well as dispersions containing them, and compositions such as inks and coatings containing them are described. The dispersants are the reaction product of at least one dianhydride with at least two different reactants, each of which can be an amine, alcohol, or thiol, and at least one of which is polymeric.
    Type: Application
    Filed: June 20, 2012
    Publication date: October 18, 2012
    Inventors: Tatiana N. ROMANOVA, Russell J. SCHWARTZ
  • Polymeric colored dispersants and colorant dispersions containing same
    Patent number: 7576146
    Abstract: Polymeric colored dispersant having the structure A-(B—X)n, where A is an organic chromophore; B is a covalently bonded linking moiety; X is a branched or linear C50-C200 polymeric covalently linked hydrocarbon, and n is an integer from 1 to 4, and low viscosity colorant dispersions containing same having a relative interfacial tension drop of less than about 1.5.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: August 18, 2009
    Assignee: Sun Chemical Corporation
    Inventors: Gregory T. Huber, Tatiana N. Romanova, Russel J. Schwartz, Terence R. Chamberlain
  • POLYMERIC DISPERSANTS
    Publication number: 20090142526
    Abstract: Dispersants for pigments as well as dispersions containing them, and compositions such as inks and coatings containing them are described. The dispersants are the reaction product of at least one dianhydride with at least two different reactants, each of which can be an amine, alcohol, or thiol, and at least one of which is polymeric.
    Type: Application
    Filed: May 25, 2007
    Publication date: June 4, 2009
    Applicant: Sun Chemical Corp
    Inventors: Tatiana N. Romanova, Russell J. Schwartz
  • Polymeric dispersants based on addition of amines to dialkylsuccinyl succinate or its derivatives
    Patent number: 7407544
    Abstract: Dispersants for pigments as well as dispersions of pigments containing them, and compositions such as inks and coatings containing them are described. The dispersants are the reaction product of a dialkylsuccinyl succinate and an amine.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: August 5, 2008
    Assignee: Sun Chemical Corporation
    Inventors: Tatiana N. Romanova, Ed Sung, Russell J. Schwartz
  • Pigment dispersants
    Publication number: 20080087193
    Abstract: Dispersants for pigments as well as dispersions of pigments containing them, and compositions such as inks and coatings containing them are described. The dispersants are the reaction product of a dialkylsuccinyl succinate and an amine.
    Type: Application
    Filed: October 17, 2006
    Publication date: April 17, 2008
    Inventors: Tatiana N. Romanova, Ed Sung, Russell J. Schwartz
  • Copper phthalocyanine blue pigment composition and water borne dispersion thereof
    Patent number: 7329315
    Abstract: Phthalocyanine blue pigments and pigment dispersions for water-borne inks and coatings are described. The pigments are produced by dry milling phthalocyanine blue and a polymeric dispersant, optionally with inorganic fillers and other additives, to obtain a material with improved coloristic, rheological, and stability properties. The resulting activated crude is then processed directly into water-based pigment dispersion with additives and/or surfactants to facilitate conversion to pigmentary form while maintaining the desirable green and clean shade.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: February 12, 2008
    Assignee: Sun Chemical Corporation
    Inventors: Stanislav Vilner, Tatiana N. Romanova, Mark Ortalano, George H. Robertson, Russell J. Schwartz
  • Polymeric dispersants and dispersions containing same
    Publication number: 20080033102
    Abstract: A polyalkyl benzimide polymeric dispersant produced from the reaction product of polyisobutylene amine with 1,2,4-benzenetricarboxylic anhydride, and method of preparing same and colorant dispersions containing dispersant.
    Type: Application
    Filed: December 5, 2003
    Publication date: February 7, 2008
    Inventors: Gregory T. Huber, Tatiana N. Romanova, Russel J. Schwartz, Terence R. Chamberlain
  • Low viscosity, highly pigmented oil based dispersions exhibiting a low relative interfacial tension drop
    Patent number: 7300511
    Abstract: Pigment dispersions that when used in printing ink having a relative interfacial tension drop of less than 1.5, and offering an ink viscosity of less than 150 Pa.s, and containing at least 45 wt. % pigment.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: November 27, 2007
    Assignee: Sun Chemical Corporation
    Inventors: Gregory T. Huber, Tatiana N. Romanova, Russell J. Schwartz, Lisa Clapp, Terrance R. Chamberlain, Don Henderson