Patents by Inventor Ashveen Vikash Nand

Ashveen Vikash Nand 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).

  • Asymmetric composite membrane and a method of preparation thereof
    Patent number: 11389771
    Abstract: Asymmetric composite membranes and methods for their preparation are disclosed. The membranes comprise a cross-linked poly(vinyl alcohol) polymer coated on a film of cross-linked sulfonated poly(ether ether ketone) adhered to a sheet of hydrophilicitized microporous polyolefin. The microporous polyolefin is typically microporous poly(ethylene). The membranes have improved selectivity with the regard to the rejection of solutes in reverse osmosis and ultrafiltration applications.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: July 19, 2022
    Assignee: HYDROXSYS HOLDINGS LIMITED
    Inventors: Lenka Benacek Craft, Mark Exley, Ashveen Vikash Nand, Dylan Townshend Gifford
  • ASYMMETRIC COMPOSITE MEMBRANES AND MODIFIED SUBSTRATES USED IN THEIR PREPARATION
    Publication number: 20220193620
    Abstract: Durable asymmetric composite membranes comprising of a film of cross-linked poly(ether ether ketone) adhered to a sheet of hydrophilicitized microporous polyolefin are disclosed. The membranes are suitable for use in the recovery or removal of water from feed streams where repeated clean-in-place protocols are required such as in the processing of dairy products. The membranes are also suitable for use in the preparation of durable asymmetric composite membranes with improved rejection characteristics.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 23, 2022
    Inventors: Lenka Benacek CRAFT, Mark EXLEY, Ashveen Vikash NAND
  • Durable asymmetric composite membranes and modified substrates used in their preparation
    Patent number: 11291215
    Abstract: Durable asymmetric composite membranes consisting essentially of a film of cross-linked sulfonated poly(ether ether ketone) adhered to a sheet of hydrophilicitized microporous poly(ethylene) are disclosed. The membranes have application in the recovery of water from feed streams where the ability to clean in situ is desirable, for example in dairy processing. Methods of preparing cross-linked sulfonated poly(ether ether ketone) suitable for use as the rejection layer and hydrophilicitized sheets of microporous poly(ethylene) suitable for use as the support layer of such membranes are also disclosed.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: April 5, 2022
    Assignee: HYDROXSYS HOLDINGS LIMITED
    Inventors: Daryl Joseph Briggs, Lenka Benacek Craft, Ashveen Vikash Nand, Mark Exley
  • ASYMMETRIC COMPOSITE MEMBRANE AND A METHOD OF PREPARATION THEREOF
    Publication number: 20200346170
    Abstract: Asymmetric composite membranes and methods for their preparation are disclosed. The membranes comprise a cross-linked poly(vinyl alcohol) polymer coated on a film of cross-linked sulfonated poly(ether ether ketone) adhered to a sheet of hydrophilicitized microporous polyolefin. The microporous polyolefin is typically microporous poly(ethylene). The membranes have improved selectivity with the regard to the rejection of solutes in reverse osmosis and ultrafiltration applications.
    Type: Application
    Filed: October 3, 2016
    Publication date: November 5, 2020
    Inventors: Lenka Benacek CRAFT, Mark EXLEY, Ashveen Vikash NAND
  • DURABLE ASYMMETRIC COMPOSITE MEMBRANES AND MODIFIED SUBSTRATES USED IN THEIR PREPARATION
    Publication number: 20190200631
    Abstract: Durable asymmetric composite membranes consisting essentially of a film of cross-linked sulfonated poly(ether ether ketone) adhered to a sheet of hydrophilicitized microporous poly(ethylene) are disclosed. The membranes have application in the recovery of water from feed streams where the ability to clean in situ is desirable, for example in dairy processing. Methods of preparing cross-linked sulfonated poly(ether ether ketone) suitable for use as the rejection layer and hydrophilicitized sheets of microporous poly(ethylene) suitable for use as the support layer of such membranes are also disclosed.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Inventors: Daryl Joseph BRIGGS, Lenka Benacek CRAFT, Ashveen Vikash NAND, Mark EXLEY
  • Durable asymmetric composite membrane
    Patent number: 10226056
    Abstract: Durable asymmetric composite membranes consisting of a film of cross-linked sulfonated poly(ether ether ketone) adhered to a sheet of sulfonated microporous poly(ethylene) are disclosed. The membranes have application in the recovery of water from feed streams were the ability to clean in situ is desirable, for example in dairy processing. Methods of preparing cross-linked sulfonated poly(ether ether ketone) suitable for use as a rejection layer in such membranes are also disclosed.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: March 12, 2019
    Assignee: HYDROXSYS HOLDINGS LIMITED
    Inventors: Daryl Joseph Briggs, Lenka Benacek Craft, Ashveen Vikash Nand
  • DURABLE ASYMMETRIC COMPOSITE MEMBRANE
    Publication number: 20170086469
    Abstract: Durable asymmetric composite membranes consisting of a film of cross-linked sulfonated poly(ether ether ketone) adhered to a sheet of sulfonated microporous poly(ethylene) are disclosed. The membranes have application in the recovery of water from feed streams were the ability to clean in situ is desirable, for example in dairy processing. Methods of preparing cross-linked sulfonated poly(ether ether ketone) suitable for use as a rejection layer in such membranes are also disclosed.
    Type: Application
    Filed: September 21, 2016
    Publication date: March 30, 2017
    Applicant: HYDROXSYS HOLDINGS LIMITED
    Inventors: Daryl Joseph Briggs, Lenka Benacek Craft, Ashveen Vikash Nand