Patents by Inventor Steven R. Patrick

Steven R. Patrick 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).

  • Methods of making pressure sensitive adhesive compositions
    Patent number: 11760822
    Abstract: Disclosed is a method comprising: a) dispersing a first monomer mixture comprising least one least monomer, the first monomer mixture having a total glass transition temperature (Tg) in the range of from ?10° C. to ?65° C. with a surfactant and an initiator in an aqueous medium; b) when the first monomer mixture is completely dispersed, adding a second monomer mixture comprising at least one monomer, the second monomer mixture having a Tg at least 20° C. greater than the Tg of the first monomer mixture, to the aqueous medium; c) when the second monomer mixture is completely dispersed, adding a third monomer mixture comprising at least one monomer, the third monomer mixture having a Tg in the range of from ?25° C. to 50° C.; and d) forming a polymer with the first, second, and third monomer mixtures. Also disclosed is a pressure sensitive adhesive comprising the polymer formed by this method.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: September 19, 2023
    Assignee: Rohm and Haas Company
    Inventors: Melinda L. Einsla, Steven R. Patrick, William B. Griffith, Jr., Paul Nedwick
  • METHODS OF MAKING PRESSURE SENSITIVE ADHESIVE COMPOSITIONS
    Publication number: 20180086867
    Abstract: Disclosed is a method comprising: a) dispersing a first monomer mixture comprising least one least monomer, the first monomer mixture having a total glass transition temperature (Tg) in the range of from ?10° C. to ?65° C. with a surfactant and an initiator in an aqueous medium; b) when the first monomer mixture is completely dispersed, adding a second monomer mixture comprising at least one monomer, the second monomer mixture having a Tg at least 20° C. greater than the Tg of the first monomer mixture, to the aqueous medium; c) when the second monomer mixture is completely dispersed, adding a third monomer mixture comprising at least one monomer, the third monomer mixture having a Tg in the range of from ?25° C. to 50° C.; and d) forming a polymer with the first, second, and third monomer mixtures. Also disclosed is a pressure sensitive adhesive comprising the polymer formed by this method.
    Type: Application
    Filed: March 2, 2016
    Publication date: March 29, 2018
    Inventors: Melinda L. Einsla, Steven R. Patrick, William B. Griffith, JR., Paul Nedwick