Patents by Inventor Steven E. Surma

Steven E. Surma 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).

  • Coating composition imparting improved stain resistance
    Patent number: 12018168
    Abstract: A coating composition includes: an aqueous dispersion of self-crosslinkable core-shell particles, where the corm-shell particles include (1) a polymeric core at least partially encapsulated by (2) a polymeric shell having urethane linkages, keto and/or aldo functional groups, and hydrazide functional groups, where the polymeric core is covalently bonded to at least a portion of the polymeric shell, and a hydrophobic additive including a wax and/or a silicon-containing compound, where the hydrophobic additive is non-reactive with the polymeric core and the polymeric shell. A substrate coated with a coating formed from the coating composition and a method for improving stain resistance of a substrate are also disclosed.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: June 25, 2024
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Yu Wang, Steven E. Surma, Xiangling Xu
  • Coating Composition Imparting Improved Stain Resistance
    Publication number: 20220081587
    Abstract: A coating composition includes: an aqueous dispersion of self-crosslinkable core-shell particles, where the corm-shell particles include (1) a polymeric core at least partially encapsulated by (2) a polymeric shell having urethane linkages, keto and/or aldo functional groups, and hydrazide functional groups, where the polymeric core is covalently bonded to at least a portion of the polymeric shell, and a hydrophobic additive including a wax and/or a silicon-containing compound, where the hydrophobic additive is non-reactive with the polymeric core and the polymeric shell. A substrate coated with a coating formed from the coating composition and a method for improving stain resistance of a substrate are also disclosed.
    Type: Application
    Filed: January 3, 2020
    Publication date: March 17, 2022
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Yu Wang, Steven E. Surma, Xiangling Xu
  • Coating composition comprising self-crosslinkable core-shell particles and imparting improved stain resistance
    Patent number: 11111409
    Abstract: A coating composition includes: an aqueous dispersion of self-crosslinkable core-shell particles, where the core-shell particles include (1) a polymeric core at least partially encapsulated by (2) a polymeric shell having urethane linkages, keto and/or aldo functional groups, and hydrazide functional groups, where the polymeric core is covalently bonded to at least a portion of the polymeric shell, and a hydrophobic additive including a wax and/or a silicon-containing compound, where the hydrophobic additive is non-reactive with the polymeric core and the polymeric shell. A substrate coated with a coating formed from the coating composition and a method for improving stain resistance of a substrate are also disclosed.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: September 7, 2021
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Yu Wang, Steven E Surma, Xiangling Xu
  • COATING COMPOSITION IMPARTING IMPROVED STAIN RESISTANCE
    Publication number: 20200216712
    Abstract: A coating composition includes: an aqueous dispersion of self-crosslinkable core-shell particles, where the core-shell particles include (1) a polymeric core at least partially encapsulated by (2) a polymeric shell having urethane linkages, keto and/or aldo functional groups, and hydrazide functional groups, where the polymeric core is covalently bonded to at least a portion of the polymeric shell, and a hydrophobic additive including a wax and/or a silicon-containing compound, where the hydrophobic additive is non-reactive with the polymeric core and the polymeric shell. A substrate coated with a coating formed from the coating composition and a method for improving stain resistance of a substrate are also disclosed.
    Type: Application
    Filed: January 3, 2019
    Publication date: July 9, 2020
    Inventors: Yu Wang, Steven E. Surma, Xiangling Xu