Patents by Inventor Futian Liu

Futian Liu 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).

  • METHODS AND COMPOSITIONS FOR SELECTIVELY REMOVING POTASSIUM ION FROM THE GASTROINTESTINAL TRACT OF A MAMMAL
    Publication number: 20090155370
    Abstract: The present invention provides methods and compositions for the treatment of ion imbalances using core-shell composites and compositions comprising such core-shell composites. In particular, the invention provides core-shell particles and compositions comprising potassium binding polymers, and core-shell particles and compositions comprising sodium binding polymers, and in each case, pharmaceutical compositions thereof. Methods of use of the polymeric and pharmaceutical compositions for therapeutic and/or prophylactic benefits are also disclosed. The compositions and methods of the invention offer improved approaches for treatment of hyperkalemia and other indications related to potassium ion homeostasis, and for treatment of hypertension and other indicates related to sodium ion homeostasis.
    Type: Application
    Filed: October 2, 2006
    Publication date: June 18, 2009
    Applicant: RELYPSA, INC.
    Inventors: Michael J. Cope, Paul Mansky, Futian Liu, Han-Ting Chang, Dominique Charmot, Eric Connor, Kalpesh Biyani, Mingjun Liu, Tony Kwok-Kong Mong, Yan Chen
  • Ion binding polymers and uses thereof
    Patent number: 7488495
    Abstract: The present invention provides methods and compositions for the treatment of ion imbalances. In particular, the invention provides compositions comprising potassium binding polymers and pharmaceutical compositions thereof. Methods of use of the polymeric and pharmaceutical compositions for therapeutic and/or prophylactic benefits are disclosed herein. Examples of these methods include the treatment of hyperkalemia, such as hyperkalemia caused by renal failure and/or the use of hyperkalemia causing drugs.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: February 10, 2009
    Assignee: Relypsa, Inc.
    Inventors: Dominique Charmot, Han Ting Chang, Gerrit Klaerner, Michael James Cope, Mingjun Liu, Futian Liu, Jerry Buysse, Eric Connor, Tony Kwok-Kong Mong, Jun Shao, Deidre Madsen
  • Techniques for the preparation of highly fluorinated polyethers
    Patent number: 7049393
    Abstract: A process for preparing a fluorinated poly(arylene ether) comprising the repeating unit: wherein n provides a molecular weight up to about 30,000 to 100,000, X represents one of following groups: none, ketone, sulfone, sulfide, ether, hexafluoroisopropylidene, ??-perfluoroalkylene, oxadiazole, and Y is 4,4?-(hexafluoroisopropylidene)-diphenyl, 4,4?-isopropylidene diphenyl, 3,3?-isopropylidene diphenyl, phenyl, or chlorinated phenol which process comprises reacting a bis(pentafluorophenyl) compound and a bisphenol or hydroquinone in the presence of a dehydrating agent and a polar aprotic solvent is disclosed. Polymers resulting from the process show good promise as new passive optic polymer waveguide materials.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: May 23, 2006
    Assignee: National Research Council of Canada
    Inventors: Jianfu Ding, Futian Liu, Ming Zhou, Mei Li, Mike Day, Pascal Vuillaume
  • Ion binding polymers and uses thereof
    Publication number: 20050220752
    Abstract: The present invention provides methods and compositions for the treatment of ion imbalances. In particular, the invention provides compositions comprising potassium binding polymers and pharmaceutical compositions thereof. Methods of use of the polymeric and pharmaceutical compositions for therapeutic and/or prophylactic benefits are disclosed herein. Examples of these methods include the treatment of hyperkalemia, such as hyperkalemia caused by renal failure and/or the use of hyperkalemia causing drugs.
    Type: Application
    Filed: March 30, 2005
    Publication date: October 6, 2005
    Inventors: Dominique Charmot, Han Chang, Gerrit Klaerner, Michael Cope, Mingjun Liu, Futian Liu, Kwok-Kong Mong
  • Ion binding polymers and uses thereof
    Publication number: 20050220751
    Abstract: The present invention provides methods and compositions for the treatment of ion imbalances. In particular, the invention provides compositions comprising potassium binding polymers and pharmaceutical compositions thereof. Methods of use of the polymeric and pharmaceutical compositions for therapeutic and/or prophylactic benefits are disclosed herein. Examples of these methods include the treatment of hyperkalemia, such as hyperkalemia caused by renal failure and/or the use of hyperkalemia causing drugs.
    Type: Application
    Filed: October 13, 2004
    Publication date: October 6, 2005
    Inventors: Dominique Charmot, Han Chang, Gerrit Klaerner, Michael Cope, Mingjun Liu, Futian Liu
  • Techniques for the preparation of highly fluorinated polyethers
    Publication number: 20040198906
    Abstract: A process for preparing a fluorinated poly(arylene ether) comprising the repeating unit: 1
    Type: Application
    Filed: May 17, 2004
    Publication date: October 7, 2004
    Inventors: Jianfu Ding, Futian Liu, Ming Zhou, Mei Li, Michael Day, Pascal Vuillaume