Patents by Inventor Allyn R. Marsh, III

Allyn R. Marsh, III 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).

  • Composite polyamide membrane including dissolvable polymer coating
    Patent number: 9533262
    Abstract: A thin film composite membrane including a thin film polyamide layer positioned between a porous support and an outer coating, and a humectant; wherein the membrane has an A-value of at least 8 l/m2 hr/bar when tested at 25 l/m2 hr with pure water at 25° C. for one hour, and wherein the outer coating comprises a dissolvable cellulose polymer provided at coverage of at least 10 mg/m2 that substantially dissolves from the membrane after one hour of continuous cross-flow of water at 25 l/m2 hr and 25° C.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: January 3, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Thomas N. Haynes, Allyn R. Marsh, III
  • COMPOSITE POLYAMIDE MEMBRANE INCLUDING DISSOLVABLE POLYMER COATING
    Publication number: 20150367288
    Abstract: A thin film composite membrane including a thin film polyamide layer positioned between a porous support and an outer coating, and a humectant; wherein the membrane has an A-value of at least 8 l/m2 hr/bar when tested at 25 l/m2 hr with pure water at 25° C. for one hour, and wherein the outer coating comprises a dissolvable cellulose polymer provided at coverage of at least 10 mg/m2 that substantially dissolves from the membrane after one hour of continuous cross-flow of water at 25 l/m2 hr and 25° C.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 24, 2015
    Applicant: Dow Global Technologies LLC
    Inventors: Thomas N. Haynes, Allyn R. Marsh III
  • Spiral wound filtration module
    Patent number: 8991027
    Abstract: The present invention is directed toward spiral wound modules along with methods for making and using the same. Several embodiments are described including methods for making spiral wound filtration modules using membrane sheet provided from a roll, wherein the membrane sheet is unrolled and assembled in a direction parallel to the permeate collection tube of the module.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: March 31, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Steven D. Jons, Allyn R. Marsh, III
  • SPIRAL WOUND FILTRATION MODULE
    Publication number: 20140130963
    Abstract: The present invention is directed toward spiral wound modules along with methods for making and using the same. Several embodiments are described including methods for making spiral wound filtration modules using membrane sheet provided from a roll, wherein the membrane sheet is unrolled and assembled in a direction parallel to the permeate collection tube of the module.
    Type: Application
    Filed: January 20, 2014
    Publication date: May 15, 2014
    Inventors: Steven D. Jons, Allyn R. Marsh, III
  • Spiral wound filtration module
    Patent number: 8661648
    Abstract: The present invention is directed toward spiral wound modules along with methods for making and using the same. Several embodiments are described including methods for making spiral wound filtration modules using membrane sheet provided from a roll, wherein the membrane sheet is unrolled and assembled in a direction parallel to the permeate collection tube of the module.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: March 4, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Steven D. Jons, Allyn R. Marsh, III
  • SPIRAL WOUND MODULE INCLUDING MEMBRANE SHEET WITH REGIONS HAVING DIFFERENT PERMEABILITIES
    Publication number: 20130199988
    Abstract: The present invention is directed toward spiral wound modules including membrane sheets with regions (70,72) having different permeabilities. Said regions are arranged either axially or radially or both.
    Type: Application
    Filed: October 17, 2011
    Publication date: August 8, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Steven D. Jons, Allyn R. Marsh, III
  • Spiral wound module including membrane sheet with regions having different permeabilities
    Patent number: 8496825
    Abstract: The present invention is directed toward spiral wound modules including membrane sheets with regions (70,72) having different permeabilities. Said regions are arranged either axially or radially or both.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: July 30, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Steven D. Jons, Allyn R. Marsh, III
  • SPIRAL WOUND FILTRATION MODULE
    Publication number: 20110232061
    Abstract: The present invention is directed toward spiral wound modules along with methods for making and using the same. Several embodiments are described including methods for making spiral wound filtration modules using membrane sheet provided from a roll, wherein the membrane sheet is unrolled and assembled in a direction parallel to the permeate collection tube of the module.
    Type: Application
    Filed: February 23, 2011
    Publication date: September 29, 2011
    Inventors: Steven D. Jons, Allyn R. Marsh, III