Patents by Inventor Jieqian J. Zhang

Jieqian J. Zhang 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).

  • Neutral layer polymers, methods of manufacture thereof and articles comprising the same
    Patent number: 10167411
    Abstract: Disclosed herein is a block copolymer comprising a first segment and a second segment that are covalently bonded to each other and that are chemically different from each other; where the first segment has a first surface free energy and where the second segment has a second surface free energy; and an additive copolymer; where the additive copolymer comprises a surface free energy reducing moiety where the surface free energy reducing moiety has a lower surface free energy than that of the first segment and the second segment; the additive copolymer further comprising one or more moieties having an affinity to the block copolymer; where the surface free energy reducing moiety is chemically different from the first segment and from the second segment; where the additive copolymer is not water miscible; and where the additive copolymer is not covalently bonded with the block copolymer.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: January 1, 2019
    Assignees: DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS ELECTRONIC MATERIALS LLC
    Inventors: Peter Trefonas, III, Phillip D. Hustad, Deyan Wang, Rahul Sharma, Mingqi Li, Jieqian J. Zhang
  • NEUTRAL LAYER POLYMERS, METHODS OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME
    Publication number: 20170327712
    Abstract: Disclosed herein is a block copolymer comprising a first segment and a second segment that are covalently bonded to each other and that are chemically different from each other; where the first segment has a first surface free energy and where the second segment has a second surface free energy; and an additive copolymer; where the additive copolymer comprises a surface free energy reducing moiety where the surface free energy reducing moiety has a lower surface free energy than that of the first segment and the second segment; the additive copolymer further comprising one or more moieties having an affinity to the block copolymer; where the surface free energy reducing moiety is chemically different from the first segment and from the second segment; where the additive copolymer is not water miscible; and where the additive copolymer is not covalently bonded with the block copolymer.
    Type: Application
    Filed: June 23, 2016
    Publication date: November 16, 2017
    Inventors: Peter Trefonas, III, Phillip D. Hustad, Deyan Wang, Rahul Sharma, Mingqi Li, Jieqian J. Zhang
  • NANOSTRUCTURE MATERIAL STACK-TRANSFER METHODS AND DEVICES
    Publication number: 20160365478
    Abstract: In one aspect, methods are provided for fabrication of multiple layers of a nanostructure material composite, and devices produced by such methods. In another aspect, methods are provided that include use of an overcoating fluoro-containing layer that can facilitate transfer of a nanostructure material layer, and devices produced by such methods.
    Type: Application
    Filed: December 19, 2014
    Publication date: December 15, 2016
    Inventors: Moonsub Shim, Nuri Oh, You Zhai, Sooji Nam, John A. Rogers, Bong Hoon Kim, Sang Y. Yang, Peter Trefonas, III, Kishori Deshpande, Jaebum Joo, Jieqian J. Zhang, Jong Keun Park
  • Neutral layer polymers, methods of manufacture thereof and articles comprising the same
    Patent number: 9382444
    Abstract: Disclosed herein is a block copolymer comprising a first segment and a second segment that are covalently bonded to each other and that are chemically different from each other; where the first segment has a first surface free energy and where the second segment has a second surface free energy; and an additive copolymer; where the additive copolymer comprises a surface free energy reducing moiety where the surface free energy reducing moiety has a lower surface free energy than that of the first segment and the second segment; the additive copolymer further comprising one or more moieties having an affinity to the block copolymer; where the surface free energy reducing moiety is chemically different from the first segment and from the second segment; where the additive copolymer is not water miscible; and where the additive copolymer is not covalently bonded with the block copolymer.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: July 5, 2016
    Assignees: DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS ELECTRONIC MATERIALS LLC
    Inventors: Peter Trefonas, III, Phillip D. Hustad, Deyan Wang, Rahul Sharma, Mingqi Li, Jieqian J. Zhang
  • NEUTRAL LAYER POLYMERS, METHODS OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME
    Publication number: 20140378592
    Abstract: Disclosed herein is a block copolymer comprising a first segment and a second segment that are covalently bonded to each other and that are chemically different from each other; where the first segment has a first surface free energy and where the second segment has a second surface free energy; and an additive copolymer; where the additive copolymer comprises a surface free energy reducing moiety where the surface free energy reducing moiety has a lower surface free energy than that of the first segment and the second segment; the additive copolymer further comprising one or more moieties having an affinity to the block copolymer; where the surface free energy reducing moiety is chemically different from the first segment and from the second segment; where the additive copolymer is not water miscible; and where the additive copolymer is not covalently bonded with the block copolymer.
    Type: Application
    Filed: June 5, 2014
    Publication date: December 25, 2014
    Inventors: Peter Trefonas, III, Phillip D. Hustad, Deyan Wang, Rahul Sharma, Mingqi Li, Jieqian J. Zhang