Patents by Inventor Brian L. Cramm

Brian L. Cramm 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).

  • Polymer including Troger'S base and isatin moieties and having intrinsic microporosity
    Patent number: 10590239
    Abstract: A polymer comprising a sub-unit represented by Formula I: wherein: L is independently selected from at least one arylene group, and a multi-ring moiety, L? is independently selected from L or is not present, A and A? are not present or are independently selected from an isatin moiety with the proviso that at least one of A and A? is selected from an isatin moiety.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: March 17, 2020
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Robert E. Hefner, Jr., Ian A. Tomlinson, Brian L. Cramm
  • Troger's base polymers having intrinsic microporosity
    Patent number: 10414866
    Abstract: A polymer including a sub-unit comprising a Troger's base moiety represented by: Formula (I) wherein L comprises an arylene group including at least one substituent group selected from: i) a crosslinking bond and ii) a functional group selected from at least one of: hydroxyl, phosphonic acid, carboxylic acid and sulfonic acid and their corresponding salt or ester; alkynyl, alkynyl ether, cyanate, epoxide, glycidyl ether or ester.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: September 17, 2019
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Robert E. Hefner, Jr., Ian A. Tomlinson, Brian L. Cramm
  • POLYMER INCLUDING TROGER'S BASE AND ISATIN MOIETIES AND HAVING INTRINSIC MICROPOROSITY
    Publication number: 20190194394
    Abstract: A polymer comprising a sub-unit represented by Formula I: wherein: L is independently selected from at least one arylene group, and a multi-ring moiety, L? is independently selected from L or is not present, A and A? are not present or are independently selected from an isatin moiety with the proviso that at least one of A and A? is selected from an isatin moiety.
    Type: Application
    Filed: July 31, 2017
    Publication date: June 27, 2019
    Inventors: Robert E. Hefner, JR., Ian A. Tomlinson, Brian L. Cramm
  • Isatin copolymers having intrinsic microporosity
    Patent number: 10239990
    Abstract: A copolymer including a repeating unit represented by Formula I: wherein: L is a divalent hydrocarbon group comprising from 1 to 12 carbon atoms; and L? is optional and when present is represented by Formula II: wherein: Y, Y? and Y? if present, are independently selected from: a carboxylic acid, sulfonic acid, phosphorous acid and phosphoric acid and their corresponding salt or ester; imino, amide, nitrile, hydrogen, hydroxyl and alkyl comprising from 1 to 6 carbon atoms; and A, A? and A? if present, are independently selected from an arylene moiety, with the proviso one or both Y? and A? may not be present.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: March 26, 2019
    Inventors: Robert E. Hefner, Jr., Brian L. Cramm
  • HIGH SOLIDS POLYCARBOXYLATE SYNTHESIS FOR CEMENT SUPERPLASTICIZERS
    Publication number: 20180319937
    Abstract: A polymer including a sub-unit comprising a Troger's base moiety represented by: Formula (I) wherein L comprises an arylene group including at least one substituent group selected from: i) a crosslinking bond and ii) a functional group selected from at least one of: hydroxyl, phosphonic acid, carboxylic acid and sulfonic acid and their corresponding salt or ester; alkynyl, alkynyl ether, cyanate, epoxide, glycidyl ether or ester.
    Type: Application
    Filed: November 10, 2016
    Publication date: November 8, 2018
    Inventors: Robert E. HEFNER, JR., Ian A. TOMLINSON, Brian L. CRAMM
  • Polymers of intrinsic microporosity
    Patent number: 9920168
    Abstract: A polymer of intrinsic microporosity having a repeating subunit including a spirobisindane imide moiety as illustrated below.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: March 20, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: Robert E. Hefner, Jr., Brian L. Cramm, Ian A. Tomlinson, Lauren M. Huffman, Abhishek Roy
  • ISATIN COPOLYMERS HAVING INTRINSIC MICROPOROSITY
    Publication number: 20180066103
    Abstract: A copolymer including a repeating unit represented by Formula I: wherein: L is a divalent hydrocarbon group comprising from 1 to 12 carbon atoms; and L? is optional and when present is represented by Formula II: wherein: Y, Y? and Y? if present, are independently selected from: a carboxylic acid, sulfonic acid, phosphorous acid and phosphoric acid and their corresponding salt or ester; imino, amide, nitrile, hydrogen, hydroxyl and alkyl comprising from 1 to 6 carbon atoms; and A, A? and A? if present, are independently selected from an arylene moiety, with the proviso one or both Y? and A? may not be present.
    Type: Application
    Filed: May 16, 2016
    Publication date: March 8, 2018
    Applicant: Dow Global Technologies LLC
    Inventors: Robert E. Hefner, JR., Brian L. Cramm
  • POLYMERS OF INTRINSIC MICROPOROSITY
    Publication number: 20170369652
    Abstract: A polymer of intrinsic microporosity having a repeating subunit including both a spirobisindane imide moiety and an amido (lactam) moiety.
    Type: Application
    Filed: February 26, 2016
    Publication date: December 28, 2017
    Inventors: Robert E. Hefner, Jr., Brian L. Cramm, Ian A. Tomlinson, Lauren M. Huffman, Abhishek Roy