Patents by Inventor Mark A. Rickard

Mark A. Rickard 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).

  • Compositions and methods for making crosslinked polyolefins with peroxide initiator
    Patent number: 10703890
    Abstract: Crosslinkable interpolymer blends comprising ethylene monomer residues, residues of comonomers having carboxylic acid and/or carboxylic acid anhydride functionality, and residues of comonomers having epoxide functionality, a peroxide initiator, and optionally a crosslinking catalyst, which, in embodiments, cure to a gel content of greater than (>) 50 wt % within less than 1.5 minutes at 200˜C, and require little or no degassing after crosslinking.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: July 7, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Dakai Ren, Kyoung moo Koh, Thomas H. Peterson, Tanya N Singh-Rachford, Mark A. Rickard, Jeffrey M. Cogen, Yabin Sun
  • Compositions and Methods for Making Crosslinked Polyolefins with Peroxide Initiator
    Publication number: 20180163034
    Abstract: Crosslinkable interpolymer blends comprising ethylene monomer residues, residues of comonomers having carboxylic acid and/or carboxylic acid anhydride functionality, and residues of comonomers having epoxide functionality, a peroxide initiator, and optionally a crosslinking catalyst, which, in embodiments, cure to a gel content of greater than (>) 50 wt % within less than 1.
    Type: Application
    Filed: June 29, 2015
    Publication date: June 14, 2018
    Inventors: Dakai Ren, Kyoung moo Koh, Thomas H. Peterson, Tanya N. Singh-Rachford, Mark A. Rickard, Jeffrey M. Cogen, Yabin Sun
  • Composite polyamide membrane having azo content and high acid content
    Patent number: 9981227
    Abstract: A thin film composite polyamide membrane comprising a porous support and a thin film polyamide layer characterized by possessing: i) an azo (—N?N—) content of from 0.40% to 1.00%, as measured by pyrolysis gas chromatography; and ii) a dissociated carboxylate content of at least 0.40 mol/kg as measured by RBS at pH 9.5.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: May 29, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: Mou Paul, Robert C. Cieslinski, Bruce B. Gerhart, David D. Hawn, XiaoHua Qiu, Mark A. Rickard, Steven Rosenberg, Abhishek Roy, Ian A. Tomlinson, Chengli Zu
  • Composite polyamide membrane having high acid content and low azo content
    Patent number: 9616392
    Abstract: A thin film composite polyamide membrane comprising a porous support and a thin film polyamide layer characterized by possessing: i) an azo (—N?N—) content of from 0.30% to 0.80%, as measured by pyrolysis gas chromatography; and ii) a dissociated carboxylate content of at least 0.18 mol/kg as measured by RBS at pH 9.5.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: April 11, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Ian A. Tomlinson, Robert C. Cieslinski, Bruce B. Gerhart, David D. Hawn, Mou Paul, XiaoHua Qiu, Mark A. Rickard, Steven Rosenberg, Abhishek Roy, Chengli Zu
  • Composite polyamide membrane having preferred azo content
    Patent number: 9555378
    Abstract: A thin film composite polyamide membrane comprising a porous support and a thin film polyamide layer characterized by possessing an azo (—N?N—) content of from 0.75% to 0.95%, as measured by pyrolysis gas chromatography.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: January 31, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Abhishek Roy, Robert C. Cieslinski, Bruce B. Gerhart, David D. Hawn, Mou Paul, XiaoHua Qiu, Mark A. Rickard, Steven Rosenberg, Ian A. Tomlinson, Chengli Zu
  • COMPOSITE POLYAMIDE MEMBRANE HAVING HIGH ACID CONTENT AND LOW AZO CONTENT
    Publication number: 20160317980
    Abstract: A thin film composite polyamide membrane comprising a porous support and a thin film polyamide layer characterized by possessing: i) an azo (—N?N—) content of from 0.30% to 0.80%, as measured by pyrolysis gas chromatography; and ii) a dissociated carboxylate content of at least 0.18 mol/kg as measured by RBS at pH 9.5.
    Type: Application
    Filed: December 15, 2014
    Publication date: November 3, 2016
    Inventors: Ian A. Tomlinson, Robert C. Cieslinski, Bruce B. Gerhart, David D. Hawn, Mou Paul, XiaoHua Qiu, Mark A. Rickard, Steven Rosenberg, Abhishek Roy, Chengli Zu
  • COMPOSITE POLYAMIDE MEMBRANE HAVING AZO CONTENT AND HIGH ACID CONTENT
    Publication number: 20160310909
    Abstract: A thin film composite polyamide membrane comprising a porous support and a thin film polyamide layer characterized by possessing: i) an azo (—N?N—) content of from 0.40% to 1.00%, as measured by pyrolysis gas chromatography; and ii) a dissociated carboxylate content of at least 0.40 mol/kg as measured by RBS at pH 9.5.
    Type: Application
    Filed: December 15, 2014
    Publication date: October 27, 2016
    Inventors: Mou PAUL, Robert C. CIESLINSKI, Bruce B. GERHART, David D. HAWN, XiaoHua QIU, Mark A. RICKARD, Steven ROSENBERG, Abhishek ROY, Ian A. TOMLINSON, Chengli ZU
  • COMPOSITE POLYAMIDE MEMBRANE HAVING PREFERRED AZO CONTENT
    Publication number: 20160303520
    Abstract: A thin film composite polyamide membrane comprising a porous support and a thin film polyamide layer characterized by possessing an azo (—N?N—) content of from 0.75% to 0.95%, as measured by pyrolysis gas chromatography.
    Type: Application
    Filed: December 15, 2014
    Publication date: October 20, 2016
    Inventors: Abhishek Roy, Robert C. Cieslinski, Bruce B. Gerhart, David D. Hawn, Mou Paul, XiaoHua Qiu, Mark A. Rickard, Steven Rosenberg, Ian A. Tomlinson, Chengli Zu
  • COMPOSITE POLYAMIDE MEMBRANE WITH CARBOXYLIC ACID FUNCTIONALITY
    Publication number: 20150157990
    Abstract: A thin film composite polyamide membrane including a porous support and a thin film polyamide layer which is a reaction product of m-phenylene diamine (mPD) and trimesoyl chloride (TMC), wherein the membrane is characterized by the thin film polyamide layer having a dissociated carboxylic acid content of at least 0.18 moles/kg at pH 9.5, and wherein pyrolysis of the thin film polyamide layer at 650 C results in a ratio of responses from a flame ionization detector for fragments produced at 212 m/z and 237 m/z of less than 2.8.
    Type: Application
    Filed: July 3, 2013
    Publication date: June 11, 2015
    Inventors: Abhishek Roy, Tina L. Arrowood, Anand S. Badami, Robert C. Cieslinski, Bruce B. Gerhart, David D. Hawn, Steven D. Jons, Mou Paul, Martin H. Peery, XiaoHua sam Qiu, Mark A. Rickard, Steven Rosenberg, Ian A. Tomlinson, Cheng Li Zu