Patents by Inventor Smita Shah

Smita Shah 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: 11078313
    Abstract: Copolymers prepared by a reaction of (1) an unactivated olefin, (2) an activated olefin, and (3) a hydroxyl functional activated olefin and/or a hydroxyl functional unactivated olefin are described. The copolymers have a backbone of polar vinyl monomers and non-polar alkene monomers, with pendant hydroxyl functional groups. The copolymers are well suited for optically clear, pressure sensitive, polyurethane and/or barrier adhesives.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: August 3, 2021
    Assignee: HENKEL IP & HOLDING GMBH
    Inventors: Laxmisha Sridhar, Smita Shah, John G. Woods, Anthony F. Jacobine
  • Publication number: 20180305480
    Abstract: Copolymers prepared by a reaction of (1) an unactivated olefin, (2) an activated olefin, and (3) a hydroxyl functional activated olefin and/or a hydroxyl functional unactivated olefin are described. The copolymers have a backbone of polar vinyl monomers and non-polar alkene monomers, with pendant hydroxyl functional groups. The copolymers are well suited for optically clear, pressure sensitive, polyurethane and/or barrier adhesives.
    Type: Application
    Filed: June 28, 2018
    Publication date: October 25, 2018
    Inventors: Laxmisha SRIDHAR, Smita SHAH, John G. WOODS, Anthony F. JACOBINE
  • Patent number: 9790309
    Abstract: Disclosed are reactive functionalized, PIB grafted polymers having an architecture of one or more pendent polyisobutylene moieties grafted on to an organic backbone, wherein the backbone is not polyisobutylene and contains at least one telechelic, reactive functionality. Also a process for making the reactive functionalized, PIB grafted polymer s and curable compositions comprising the reactive functionalized, PIB grafted polymers.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: October 17, 2017
    Assignee: Henkel IP & Holding GmbH
    Inventors: Laxmisha Sridhar, Smita Shah, Andrew D. Messana, Anthony F. Jacobine
  • Patent number: 9587054
    Abstract: The present invention discloses polymers prepared from polar vinyl monomers and non-polar olefin monomers with the polymers having high olefin content and high weight average molecular weights as well as methods of preparing them. The inventive polymers possess interesting properties that make them particularly attractive in several industrial applications.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: March 7, 2017
    Assignee: Henkel IP & Holding GmbH
    Inventors: Laxmisha Sridhar, Smita Shah, John G. Woods, Anthony F. Jacobine, Jiangbo Ouyang, Austin Sloan, Swapnali Chaudhari
  • Patent number: 9371473
    Abstract: Benzoylthiourea or benzoylthiourethane derivatives as cure accelerators in primers for two step adhesive systems are provided.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: June 21, 2016
    Assignees: Henkel IP & Holding GmbH, Henkel AG & Co. KGaA
    Inventors: David P. Birkett, Anthony F. Jacobine, Andrew D. Messana, Joel D. Schall, David Mullen, Martin Wyer, Lynnette Hurlburt, Jiangbo Ouyang, Smita Shah
  • Publication number: 20160152746
    Abstract: The present invention discloses polymers prepared from polar vinyl monomers and non-polar olefin monomers with the polymers having high olefin content and high weight average molecular weights as well as methods of preparing them. The inventive polymers possess interesting properties that make them particularly attractive in several industrial applications.
    Type: Application
    Filed: February 8, 2016
    Publication date: June 2, 2016
    Inventors: Laxmisha Sridhar, Smita Shah, John G. Woods, Anthony F. Jacobine, Jiangbo Ouyang, Austin Sloan, Swapnali Chaudhari
  • Patent number: 9056060
    Abstract: An adhesive composition which lacks functional groups containing reactive hydrogen moieties and contains no post-polymerization chemical crosslinker finds use in transdermal drug delivery systems. The invention enables the administration of drugs containing a reactive functional group, which drugs have heretofore not been able to be administered by the transdermal route using conventional acrylic adhesives.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: June 16, 2015
    Assignee: Henkel AG & Co. KGaA
    Inventors: Eric Silverberg, Rama Chandran, Paul Foreman, Michael Philbin, Smita Shah
  • Publication number: 20150005453
    Abstract: Disclosed are reactive functionalized, PIB grafted polymers having an architecture of one or more pendent polyisobutylene moieties grafted on to an organic backbone, wherein the backbone is not polyisobutylene and contains at least one telechelic, reactive functionality. Also a process for making the reactive functionalized, PIB grafted polymer s and curable compositions comprising the reactive functionalized, PIB grafted polymers.
    Type: Application
    Filed: September 17, 2014
    Publication date: January 1, 2015
    Inventors: Laxmisha Sridhar, Smita Shah, Andrew D. Messana, Anthony F. Jacobine
  • Publication number: 20140000807
    Abstract: Benzoylthiourea or benzoylthiourethane derivatives as cure accelerators in primers for two step adhesive systems are provided.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 2, 2014
    Applicants: Henkel Ireland Limited, Henkel Corporation
    Inventors: David P. Birkett, Anthony F. Jacobine, Andrew D. Messana, Joel D. Schall, David Mullen, Martin Wyer, Lynnette Hurlburt, Jiangbo Ouyang, Smita Shah
  • Patent number: 8580891
    Abstract: Silicone acrylic hybrid compositions prepared by reacting together silicone polymers, silicone resins, and silyl containing acrylic polymers are useful in adhesive compositions that find use in skin contact applications.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: November 12, 2013
    Assignee: Henkel US IP LLC
    Inventors: Yuxia Liu, Charles Willard Paul, Jiangbo Ouyang, Paul B. Foreman, Laxmisha M. Sridhar, Smita Shah
  • Publication number: 20120095159
    Abstract: Silicone acrylic hybrid compositions prepared by reacting together silicone polymers, silicone resins, and silyl containing acrylic polymers are useful in adhesive compositions that find use in skin contact applications.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 19, 2012
    Inventors: Yuxia Liu, Charles Willard Paul, Jiangbo Ouyang, Paul B. Foreman, Laxmisha M. Sridhar, Smita Shah
  • Patent number: 7375175
    Abstract: A dispersion of polymer particles, the particle containing, on average, one or more living radicals each, the radicals not being chemically protected. Further disclosed is a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: May 20, 2008
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Yadunandan Dar, Smita Shah
  • Publication number: 20070014985
    Abstract: Polymer dispersion forms a non-tacky film when dry. Under the application of a suitable impulse the morphology of the film is disrupted and the film becomes tacky. The compositions of the invention find use as thermally activated films and coatings, especially pressure sensitive adhesives.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 18, 2007
    Inventors: Qingwen Yuan-Huffman, Yadunandan Dar, Allison Xiao, Smita Shah, Dongyun Huang, Michael Eknoian
  • Publication number: 20050182164
    Abstract: A dispersion of polymer particles, the particle containing, on average, one or more living radicals each, the radicals not being chemically protected. Further disclosed is a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.
    Type: Application
    Filed: February 4, 2005
    Publication date: August 18, 2005
    Inventors: Yadunandan Dar, Smita Shah
  • Publication number: 20050165158
    Abstract: The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.
    Type: Application
    Filed: December 2, 2004
    Publication date: July 28, 2005
    Inventors: Yadunandan Dar, Smita Shah
  • Patent number: 6841636
    Abstract: The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: January 11, 2005
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Yadunandan Dar, Smita Shah
  • Publication number: 20040082709
    Abstract: The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.
    Type: Application
    Filed: August 1, 2003
    Publication date: April 29, 2004
    Inventors: Yadunandan Dar, Smita Shah
  • Publication number: 20020077437
    Abstract: An adhesive composition which lacks functional groups containing reactive hydrogen moieties and contains no post-polymerization chemical crosslinker finds use in transdermal drug delivery systems. The invention enables the administration of drugs containing a reactive functional group, which drugs have heretofore not been able to be administered by the transdermal route using conventional acrylic adhesives.
    Type: Application
    Filed: September 18, 2001
    Publication date: June 20, 2002
    Inventors: Eric Silverberg, Rama Chandran, Paul Foreman, Michael Philbin, Smita Shah
  • Patent number: 6077527
    Abstract: Pressure sensitive adhesive compositions for use in transdermal drug delivery systems comprising an adhesive composition which is tolerant to plasticization by cutaneous penetration enhancers contained in the transdermal drug formulation are disclosed. Specifically, the pressure sensitive adhesive composition of the present invention comprises an acrylic copolymer prepared from (i) at least 40% by weight of th total monomer composition of alkyl acrylate monomers with a Tg of -90 to 0.degree. C., (ii) 0-15% by weight of the total monomer composition of monomers with a Tg of 0 to 250.degree. C., and (iii) 10-60% by weight of the total monomer composition of substituted acrylamides or methacrylamides having the structural formula: ##STR1## wherein R.sub.1 is H or CH.sub.3,R.sub.2 is H or CH.sub.3, andR.sub.3 is (a) CH.sub.3,(b) C(CH.sub.3).sub.2 --(CH.sub.2).sub.n --CH.sub.3 where n is 0 through 17, or(c) substituents of the formula: ##STR2## where m is 0 through 10, and optionally(iv) at least 0.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: June 20, 2000
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Hock S. Tan, Ingrid Zhang, Susan Lydzinski, Peter L. Merkel, Paul Foreman, Smita Shah, Rama S. Chandran