Patents by Inventor Ramesh C. Kumar

Ramesh C. Kumar 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: 20110300296
    Abstract: Methods for preparing silicone-containing polymers by essentially adiabatic polymerization methods are disclosed. The polymerization system includes free radically polymerizable monomers. The monomers include ethylenically unsaturated cone-containing monomers and/or mercapto-functional silicones as well as additional free radically polymerizable monomers. The silicone-containing polymers are useful as adhesives or release materials.
    Type: Application
    Filed: November 23, 2009
    Publication date: December 8, 2011
    Inventors: Audrey A. Sherman, Mark F. Ellis, Ramesh C. Kumar, Sonja S. MacKey, Richard L. Peloquin, Jeffrey O. Emslander
  • Publication number: 20110244226
    Abstract: Blended release materials including a blend of a fluoro-functional silicone release polymer and a fluoropolymer are described. Exemplary fluoropolymers include fluoroolefin-based polymers and linear fluoropolymers including linear fluoroacryaltes. Articles including such release materials such as release liners, and adhesive articles, including silicone adhesive articles, are also described.
    Type: Application
    Filed: December 14, 2009
    Publication date: October 6, 2011
    Inventors: Jayshree Seth, Zai-Ming Qiu, Marie A. Boulos, Michael A. Semonick, Ramesh C. Kumar
  • Publication number: 20100323570
    Abstract: A copolymer comprises the reaction product of (a) (meth)acrylate functionalized nanoparticles, (b) vinyl monomer, and (c) silicone macromer. The (meth)acrylate functionalize nanoparticles are selected from the group consisting of silica nanoparticles, zirconia nanoparticles, titania nanoparticles, and combinations thereof.
    Type: Application
    Filed: December 19, 2008
    Publication date: December 23, 2010
    Inventors: Ramesh C. Kumar, Taun L. McKenzie, Ying-Yuh Lu
  • Patent number: 7851387
    Abstract: A composition comprises a copolymer comprising repeating units derived from at least one co-reactant comprising two or more acrylate groups and repeating units derived from a fluoroacrylate comprising the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: C4F9—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf?CnF2n+1, n=1 to 5, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoroacrylate monomer having 2 to about 30 carbon atoms in its alkylene portion; wherein the composition is coatable.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: December 14, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Zai-Ming Qiu, George G. I. Moore, John C. Clark, Ramesh C. Kumar
  • Publication number: 20100310865
    Abstract: A copolymer comprises the reaction product of (a) (meth)acrylate functionalized nanoparticles, (b) vinyl monomer, and (c) mercapto-functional silicone. The (meth)acrylate functionalize nanoparticles are selected from the group consisting of silica nanoparticles, zirconia nanoparticles, titania nanoparticles, and combinations thereof.
    Type: Application
    Filed: December 16, 2008
    Publication date: December 9, 2010
    Inventors: Ramesh C. Kumar, Taun L. McKenzie, Ying-Yuh Lu
  • Patent number: 7666964
    Abstract: A copolymer comprises repeating units derived from at least one co-reactant comprising two or more mercapto functional groups, and repeating units derived from a fluoroacrylate comprising the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: C4F9—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, n=1 to 5, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoroacrylate monomer having 2 to about 30 carbon atoms in its alkylene portion.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: February 23, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Zai-Ming Qiu, John C. Clark, Ramesh C. Kumar
  • Patent number: 7659351
    Abstract: Fluoroacrylates comprise the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: CnF2n+1—X—OH wherein: n=1 to 4, R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diusocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoro acrylate monomer having 2 to about 30 carbon atoms in its alkylene portion.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: February 9, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Gregg A. Caldwell, John C. Clark, David J. Kinning, Alan R. Kirk, Thomas P. Klun, Ramesh C. Kumar, Roger A. Mader, George G I. Moore, Zai-Ming Qiu, Richard B. Ross
  • Patent number: 7411020
    Abstract: In one aspect, the invention provides a water-based release coating composition comprising a mixture of: A. from 0.1 to about 5 wt % of a fluoro(meth)acrylate (co)polymer or a fluorochemical urethane compound containing at least one fluorinated group having the formula —CF2)nCF3, wherein n is an integer from 1 to 3; B. from about 5 to about 99.9 wt % of a copolymer comprising the reaction product of a. from about 40 to about 70 wt % of an alkyl (meth)acrylate, wherein the alkyl group contains from 16 to 22 carbon atoms, b. from about 3 to about 20 wt % of (meth)acrylic acid, c. from about 20 to about 40 wt % acrylonitrile, and d. from 0 to about 15 wt % of vinyl monomer, other than acrylonitrile, wherein the sum of a. through d. equals 100%; and C. from 0 to about 94.9 wt % of an extender polymer, wherein the sum of A., B., and C. is 100% and wt % is based on the total amount of solids in the composition.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: August 12, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: James G. Carlson, John C. Clark, James P. DiZio, David J. Kinning, Ramesh C. Kumar, Chetan P. Jariwala
  • Publication number: 20080132132
    Abstract: A composition comprises a copolymer comprising repeating units derived from at least one co-reactant comprising two or more acrylate groups and repeating units derived from a fluoroacrylate comprising the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: C4F9—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2+1, n=1 to 5, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoroacrylate monomer having 2 to about 30 carbon atoms in its alkylene portion; wherein the composition is coatable.
    Type: Application
    Filed: February 8, 2008
    Publication date: June 5, 2008
    Inventors: Zai-Ming QIU, George G.I. Moore, John C. Clark, Ramesh C. Kumar
  • Patent number: 7345123
    Abstract: A composition comprises a copolymer comprising repeating units derived from at least one co-reactant comprising two or more acrylate groups and repeating units derived from a fluoroacrylate comprising the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: C4F9—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, n=1 to 5, y 32 0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoroacrylate monomer having 2 to about 30 carbon atoms in its alkylene portion; wherein the composition is coatable.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: March 18, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Zai-Ming Qiu, George G. I. Moore, John C. Clark, Ramesh C. Kumar
  • Patent number: 7291688
    Abstract: A copolymer comprises repeating units derived from at least one co-reactant comprising two or more mercapto functional groups, and repeating units derived from a fluoroacrylate comprising the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: C4F9—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, n=1 to 5, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoroacrylate monomer having 2 to about 30 carbon atoms in its alkylene portion.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: November 6, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Zai-Ming Qiu, John C. Clark, Ramesh C. Kumar
  • Patent number: 7268197
    Abstract: A fluorochemical compound comprises the reaction product of: (a) the reaction product of: (i) at least one fluorochemical alcohol represented by the formula: CnF2n+1—X—OH wherein: n=1 to 6, R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, y=0 to 6, q=1 to 8; and (ii) at least one unbranched symmetric diisocyanate, and (b) at least one co-reactant comprising two or more functional groups that are capable of reacting with an isocyanate group.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: September 11, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: George G. I. Moore, Ramesh C. Kumar, Zai-Ming Qiu, John C. Clark, Chetan P. Jariwala, Thomas P. Klun
  • Patent number: 7199197
    Abstract: Fluoroacrylates comprise the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: CnF2n+1—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoro acrylate monomer having 2 to about 30 carbon atoms in its alkylene portion.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: April 3, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Gregg A. Caldwell, John C. Clark, David J. Kinning, Alan R. Kirk, Thomas P. Klun, Ramesh C. Kumar, Roger A. Mader, George G. I. Moore, Zai-Ming Qiu, Richard B. Ross
  • Patent number: 6562324
    Abstract: Cosmetic compositions are provided containing vinyl-silicone graft or block copolymers of the formula
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 13, 2003
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Kanta Kumar, Ramesh C. Kumar, Smarajit Mitra
  • Patent number: 6541109
    Abstract: Release coating formulations and release coatings derived therefrom that incorporate a blend of a silicone vinyl copolymer and a second polymer for which the release qualities are extremely stable over time. The silicone vinyl copolymer and the second polymer include complementary crosslinkable functionality allowing interpolymer crosslinks to be formed.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: April 1, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Ramesh C. Kumar, Elda T. G. Bloemendal, Bruce C. Schmidt
  • Publication number: 20030045630
    Abstract: The invention provides novel macromonomer and carboxyl functional polyurethanes having a high carboxyl content. The invention further provides dispersions, coatings and magnetic recording media comprising these polyurethanes, or blends or copolymers of these polyurethanes with quaternary ammonium compounds. The invention further provides novel dispersions, coatings and magnetic recording media comprising combinations of carboxyl functional polyurethanes having a high carboxyl content with quaternary ammonium polymers.
    Type: Application
    Filed: April 8, 2002
    Publication date: March 6, 2003
    Applicant: Minnesota Mining and Manufacturing company
    Inventors: James G. Carlson, Ramesh C. Kumar
  • Patent number: 6482510
    Abstract: A novel form construction comprising a substrate (e,g., a form sheet or roll goods) having a digital printable surface portion and a release surface portion, on which release coating surface portion a signage with a pressure-sensitive adhesive can be releasably adhered. A digital printable release coating composition is also provided.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: November 19, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: J. Sundar Rajan, Roberta E. Harelstad, Joey L. Reule, Ramesh C. Kumar
  • Patent number: 6406787
    Abstract: A novel form construction comprising a form sheet having a digital printable surface portion and a release surface portion, on which release coating surface portion a signage with a pressure-sensitive adhesive can be releasably adhered. A digital printable release coating composition is also provided.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: June 18, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: J. Sundar Rajan, Roberta E. Harelstad, Joey L. Reule, Ramesh C. Kumar
  • Patent number: 6264934
    Abstract: A vinylic copolymer comprising repeat units of A, B and C These copolymers have an acid content of 0.015 to 0.50 milliequivalents per gram of copolymer. Compositions that provide these copolymers in easily handled forms, and cosmetic compositions comprising the copolymer are also provided.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: July 24, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Steven S. Kantner, Richard A. Mallo, Ramesh C. Kumar
  • Patent number: 6265060
    Abstract: A magnetic recording medium, comprising a magnetic layer provided on a nonmagnetizable substrate, wherein the magnetic layer comprises a magnetic pigment dispersed in a polymeric binder, the polymeric binder comprising a resin, wherein the resin comprises a nonchlorinated fluorine-containing vinyl copolymer having pendant nitrile groups, pendant hydroxyl groups, and pendant fluorine-containing groups.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: July 24, 2001
    Assignee: Imation Corp.
    Inventors: Ravindra L. Arudi, Ramesh C. Kumar