Patents by Inventor Lok Ming LI

Lok Ming LI 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).

  • Process of preparing a siloxane copolymer
    Patent number: 9701879
    Abstract: The invention relates to a process for preparing a cyclic siloxane copolymer, a water repellent composition and the use for treating porous substrates like concrete, especially reinforced concrete.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: July 11, 2017
    Assignee: DOW CORNING CORPORATION
    Inventors: Lok Ming Li, Yihan Liu, Timothy Roggow, Marie-Jose Sarrazin, David Selley, Andreas Stammer, Paul Vandort
  • Water repellent for concrete
    Patent number: 9701590
    Abstract: The invention provides a water repellent composition for treating porous substrates comprising an emulsion which includes water, at least one surfactant, and a siloxane copolymer having the formula (I) wherein R is an alkyl radical having 1 to 3 carbon atoms; a has a value of from 1 to 12; R? is an alkyl radical having 8 to 12 carbon atoms, b?2; (a+b) is at least 5. This composition shows a good depth of penetration of porous substrates especially reinforced concrete and has a low Volatile Organic Content to ASTM D 5095.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: July 11, 2017
    Assignee: DOW CORNING CORPORATION
    Inventors: Lok Ming Li, Yihan Liu, Timothy Roggow, Marie-Jose Sarrazin, David Selley, Andreas Stammer, Paul Vandort
  • Process of preparing a siloxane copolymer
    Patent number: 9120961
    Abstract: A process for preparing a cyclic siloxane copolymer, a water repellent composition and the use for treating porous substrates like concrete, especially reinforced concrete.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: September 1, 2015
    Assignee: DOW CORNING Corporation
    Inventors: Lok Ming Li, Yihan Liu, Timothy Roggow, Marie-jose Sarrazin, David Selley, Andreas Stammer, Paul Vandort
  • Water Repellent For Concrete
    Publication number: 20140228511
    Abstract: The invention provides a water repellent composition for treating porous substrates comprising an emulsion which includes water, at least one surfactant, and a siloxane copolymer having the formula (I) wherein R is an alkyl radical having 1 to 3 carbon atoms; a has a value of from 1 to 12; R? is an alkyl radical having 8 to 12 carbon atoms, b?2; (a+b) is at least 5. This composition shows a good depth of penetration of porous substrates especially reinforced concrete and has a low Volatile Organic Content to ASTM D 5095.
    Type: Application
    Filed: September 19, 2012
    Publication date: August 14, 2014
    Inventors: Lok Ming Li, Yihan Liu, Timothy Roggow, Marie-Jose Sarrazin, David Selley, Andreas Stammer, Paul Vandort
  • Process Of Preparing A Siloxane Copolymer
    Publication number: 20140228496
    Abstract: The invention relates to a process for preparing a cyclic siloxane copolymer, a water repellent composition and the use for treating porous substrates like concrete, especially reinforced concrete.
    Type: Application
    Filed: September 19, 2012
    Publication date: August 14, 2014
    Inventors: Lok Ming Li, Yihan Liu, Timothy Roggow, Marie-Jose Sarrazin, David Selley, Andreas Stammer, Paul Vandort
  • PROCESS OF PREPARING A SILOXANE COPOLYMER
    Publication number: 20140206813
    Abstract: A process for preparing a cyclic siloxane copolymer, a water repellent composition and the use for treating porous substrates like concrete, especially reinforced concrete.
    Type: Application
    Filed: March 19, 2014
    Publication date: July 24, 2014
    Inventors: Lok Ming LI, Yihan LIU, Timothy ROGGOW, Marie-jose SARRAZIN, David SELLEY, Andreas STAMMER, Paul VANDORT