Patents by Inventor Lixiang XIAO

Lixiang XIAO 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).

  • Membranes comprising cellulosic material and hydrophilic block copolymer (V)
    Patent number: 9309367
    Abstract: Disclosed is a porous membrane comprising a cellulosic material and a copolymer of the formula: A-B-A (I) or A-B (II), wherein block A, for example, polyglycerol, a polymer of allyl glycidyl ether, or a copolymer of glycidol and allyl glycidyl ether, or a polymer of allyl glycidyl ether or a copolymer of glycidol and allyl glycidyl ether wherein one or more allyl groups having been replaced by hydrophilic groups. Also disclosed is a method for preparing such a membrane.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: April 12, 2016
    Assignee: Pall Corporation
    Inventors: Lixiang Xiao, Hassan Ait-Haddou, Frank Onyemauwa
  • Crosslinked cellulosic membranes
    Patent number: 9254466
    Abstract: Disclosed are crosslinked porous membranes comprising a cellulosic material and an aromatic hydrophobic moiety or a copolymer of the formula A-B-A (I) or A-B (II), wherein block A, for example, polyglycerol, a polymer of allylglycidyl ether, or a copolymer of glycidol and allyl glycidyl ether, or a polymer of allyl glycidyl ether or a copolymer of glycidol and allyl glycidyl ether wherein one or more allyl groups having been replaced by hydrophilic groups. Block B is an aromatic hydrophobic moiety. An example of the aromatic hydrophobic moiety is polyethersulfone. Also disclosed is a method for preparing such membranes.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 9, 2016
    Assignee: Pall Corporation
    Inventors: Lixiang Xiao, Hassan Ait-Haddou, Frank Onyemauwa, Lauren A. Spielman, Shant M. Hambarsoomian
  • CROSSLINKED CELLULOSIC MEMBRANES
    Publication number: 20150375177
    Abstract: Disclosed are crosslinked porous membranes comprising a cellulosic material and an aromatic hydrophobic moiety or a copolymer of the formula A-B-A (I) or A-B (II), wherein block A, for example, polyglycerol, a polymer of allylglycidyl ether, or a copolymer of glycidol and allyl glycidyl ether, or a polymer of allyl glycidyl ether or a copolymer of glycidol and allyl glycidyl ether wherein one or more allyl groups having been replaced by hydrophilic groups. Block B is an aromatic hydrophobic moiety. An example of the aromatic hydrophobic moiety is polyethersulfone. Also disclosed is a method for preparing such membranes.
    Type: Application
    Filed: June 30, 2014
    Publication date: December 31, 2015
    Inventors: Lixiang XIAO, Hassan AIT-HADDOU, Frank ONYEMAUWA, Lauren A. SPIELMAN, Shant M. HAMBARSOOMIAN
  • MEMBRANES COMPRISING CELLULOSIC MATERIAL AND HYDROPHILIC BLOCK COPOLYMER (V)
    Publication number: 20150376362
    Abstract: Disclosed is a porous membrane comprising a cellulosic material and a copolymer of the formula: A-B-A (I) or A-B (II), wherein block A, for example, polyglycerol, a polymer of allyl glycidyl ether, or a copolymer of glycidol and allyl glycidyl ether, or a polymer of allyl glycidyl ether or a copolymer of glycidol and allyl glycidyl ether wherein one or more allyl groups having been replaced by hydrophilic groups. Also disclosed is a method for preparing such a membrane.
    Type: Application
    Filed: June 30, 2014
    Publication date: December 31, 2015
    Inventors: Lixiang XIAO, Hassan AIT-HADDOU, Frank ONYEMAUWA
  • STIRRER CELL MODULE AND METHOD OF USING
    Publication number: 20140318230
    Abstract: Baffles useful for stirrer cell modules, stirrer cell modules including the baffles, and methods of using the baffles and modules, are disclosed.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 30, 2014
    Applicant: Pall Corporation
    Inventors: Jason S. PELLEGRINO, Lixiang XIAO, Richard MORRIS, James J. HATHCOCK