Patents by Inventor Amba Ayambem

Amba Ayambem 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).

  • Lightweight joint treatment formulation
    Publication number: 20040060480
    Abstract: Wallboard joint compound compositions comprising water, calcium carbonate, a polyether siloxane copolymer, and a styrene-butadiene polymer are disclosed. The joint compound compositions display significantly reduced cratering, reduced shrinking, greater sag resistance, and excellent workability.
    Type: Application
    Filed: October 1, 2002
    Publication date: April 1, 2004
    Inventor: Amba Ayambem
  • Pre-blend composition, and method of making joint compound using same
    Patent number: 6712897
    Abstract: A pre-blend composition for preparation of joint compound including water, a cellulose ether thickener, and about 19% or less by weight of a salt selected from the group consisting of potassium carbonate, potassium sulfate, sodium acetate, and mixtures thereof, wherein the composition is essentially free of alumina, is disclosed.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: March 30, 2004
    Assignee: National Gypsum Properties, LLC.
    Inventors: Amba Ayambem, Richard E. Smith, Salvatore Taravella
  • Joint compound and method of using same
    Patent number: 6645291
    Abstract: A joint compound includes water, calcium carbonate, and a water-soluble polymeric set retarder formed from a monomer having two or more carboxyl groups. The joint compound is useful in various applications and in a hybrid joint compound made with a calcium sulfate hemihydrate setting-type joint compound.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: November 11, 2003
    Assignee: National Gypsum Properties, LLC
    Inventors: Amba Ayambem, Gopalakrishnan Sethuraman, Richard E. Smith
  • Gypsum layered panels containing styrene butadiene latex additive
    Publication number: 20030134944
    Abstract: Gypsum wallboard compositions are disclosed which contain functionalized styrene butadiene latex polymers. Methods for the use of the compositions in the manufacture of wallboard panels and sheets is presented.
    Type: Application
    Filed: January 7, 2003
    Publication date: July 17, 2003
    Inventors: Gopalakrishnan Sethuraman, W. Roy Burke, Amba Ayambem, Richard J. Romanek
  • Joint compound and method of using same
    Publication number: 20030105204
    Abstract: A joint compound includes water, calcium carbonate, and a water-soluble polymeric set retarder formed from a monomer having two or more carboxyl groups. The joint compound is useful in various applications and in a hybrid joint compound made with a calcium sulfate hemihydrate setting-type joint compound.
    Type: Application
    Filed: August 28, 2002
    Publication date: June 5, 2003
    Applicant: National Gypsum Properties, LLC.
    Inventors: Amba Ayambem, Gopalakrishnan Sethuraman, Richard E. Smith
  • Methods of preparing gypsum wallboards containing styrene butadiene latex additive
    Publication number: 20030096891
    Abstract: Gypsum wallboard compositions are disclosed which contain functionalized styrene butadiene latex polymers. Methods for the use of the compositions in the manufacture of wallboard panels and sheets is presented.
    Type: Application
    Filed: January 7, 2003
    Publication date: May 22, 2003
    Inventors: Gopalakrishnan Sethuraman, W. Roy Burke, Amba Ayambem, Richard J. Romanek
  • Gypsum composition with ionic styrene butadiene latex additive
    Patent number: 6525116
    Abstract: Gypsum wallboard compositions are disclosed which contain functionalized styrene butadiene latex polymers. Methods for the use of the compositions in the manufacture of wallboard panels and sheets is presented.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: February 25, 2003
    Assignee: National Gypsum Properties LLC
    Inventors: Gopalakrishnan Sethuraman, W. Roy Burke, Amba Ayambem
  • Pre-blend composition, and method of making joint compound using same
    Publication number: 20020195024
    Abstract: A pre-blend composition for preparation of joint compound including water, a cellulose ether thickener, and about 19% or less by weight of a salt selected from the group consisting of potassium carbonate, potassium sulfate, sodium acetate, and mixtures thereof, wherein the composition is essentially free of alumina, is disclosed.
    Type: Application
    Filed: May 21, 2001
    Publication date: December 26, 2002
    Inventors: Amba Ayambem, Richard E. Smith, Salvatore Taravella
  • Joint compound and method of making same
    Patent number: 6436185
    Abstract: A joint compound includes water, calcium carbonate, and a water-soluble polymeric set retarder formed from a monomer having two or more carboxyl groups. The joint compound is useful in various applications and in a hybrid joint compound made with a calcium sulfate hemihydrate setting-type joint compound.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: August 20, 2002
    Assignee: National Gypsum Properties, LLC
    Inventors: Amba Ayambem, Gopalakrishnan Sethuraman, Richard E. Smith
  • Joint compound and method of making same
    Publication number: 20020038618
    Abstract: A joint compound includes water, calcium carbonate, and a water-soluble polymeric set retarder formed from a monomer having two or more carboxyl groups. The joint compound is useful in various applications and in a hybrid joint compound made with a calcium sulfate hemihydrate setting-type joint compound.
    Type: Application
    Filed: April 19, 2001
    Publication date: April 4, 2002
    Inventors: Amba Ayambem, Gopalakrishnan Sethuraman, Richard E. Smith
  • Gypsum wallboard composition, wallboard panel, and method of making same
    Publication number: 20020035180
    Abstract: Gypsum wallboard compositions are disclosed which contain functionalized styrene butadiene latex polymers. Methods for the use of the compositions in the manufacture of wallboard panels and sheets is presented.
    Type: Application
    Filed: September 27, 2001
    Publication date: March 21, 2002
    Inventors: Gopalakrishnan Sethuraman, W. Roy Burke, Amba Ayambem