Patents by Inventor Jian Xin Zhang

Jian Xin 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).

  • Heterofunctional polyethylene glycol and polyethylene oxide, process for their manufacture
    Patent number: 7009033
    Abstract: Heterofunctional polyethylene glycol or polyethylene oxide, represented by one of the following formula (I) to (IV): wherein: m is an integer from 5 to 10,000; n is an integer from 1 to 20; each R is independently an organic substituent, preferably an hydrocarbon substituent that preferably comprises at least one heteroatom, each A is independently an alkyl, a substituted alkyl group or an hydrogen atom, and the salts thereof.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: March 7, 2006
    Assignee: Polymer Source Inc.
    Inventors: Sunil K. Varshney, Jian Xin Zhang
  • Heterofunctional polyethylene glycol and polyethylene oxide, process for their manufacture
    Publication number: 20030027929
    Abstract: Heterofunctional polyethylene glycol or polyethylene oxide, represented by one of the following formula (I) to (IV): 1
    Type: Application
    Filed: July 2, 2001
    Publication date: February 6, 2003
    Applicant: POLYMER SOURCE INC.
    Inventors: Sunil K. Varshney, Jian Xin Zhang