Patents by Inventor Jieming Li

Jieming Li 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).

  • Monomers and polymers for optical elements
    Patent number: 7821719
    Abstract: An optical element includes a first lens; a cover; and a cured matrix polymer sandwiched between the first lens and the cover; the matrix polymer, prior to curing, having a monomer mixture dispersed therein; the matrix polymer being selected from the group consisting of polyester, polystyrene, polyacrylate, thiol-cured epoxy polymer, thiol-cured isocyanate polymer, and mixtures thereof; and the monomer mixture comprising a thiol monomer and at least one second monomer selected from the group consisting of ene monomer and yne monomer.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: October 26, 2010
    Assignee: Ophthonix, Inc.
    Inventors: Jagdish Jethmalani, Andreas W. Dreher, Gomaa Abdel-Sadek, Jeffrey Chomyn, Jieming Li, Maher Qaddoura
  • Monomers and polymers for optical elements
    Patent number: 7371804
    Abstract: Compositions comprising a matrix polymer and a mixture of monomers are used for making polymer mixtures containing the matrix polymer and a second polymer formed from the monomer mixture. Preferably, the matrix polymer comprises a polyester, polystyrene, polyacrylate, thiol-cured epoxy polymer, thiol-cured isocyanate polymer, or mixtures thereof. Preferably, the monomer mixture comprises a thiol monomer and at least one second monomer selected from the group consisting of ene monomer and yne monomer. The compositions may be used to fabricate optical elements such as lenses.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: May 13, 2008
    Assignee: Ophthonix, Inc.
    Inventors: Jagdish Jethmalani, Andreas W. Dreher, Gomaa Abdel-Sadek, Jeffrey Chomyn, Jieming Li, Maher Qaddoura
  • MONOMERS AND POLYMERS FOR OPTICAL ELEMENTS
    Publication number: 20080068723
    Abstract: An optical element includes a first lens; a cover; and a cured matrix polymer sandwiched between the first lens and the cover; the matrix polymer, prior to curing, having a monomer mixture dispersed therein; the matrix polymer being selected from the group consisting of polyester, polystyrene, polyacrylate, thiol-cured epoxy polymer, thiol-cured isocyanate polymer, and mixtures thereof; and the monomer mixture comprising a thiol monomer and at least one second monomer selected from the group consisting of ene monomer and yne monomer.
    Type: Application
    Filed: November 6, 2007
    Publication date: March 20, 2008
    Applicant: Ophthonix, Inc.
    Inventors: Jagdish JETHMALANI, Andreas Dreher, Gomaa Abdel-Sadek, Jeffrey Chomyn, Jieming Li, Maher Qaddoura
  • Monomers and polymers for optical elements
    Publication number: 20060052547
    Abstract: Compositions comprising a matrix polymer and a mixture of monomers are used for making polymer mixtures containing the matrix polymer and a second polymer formed from the monomer mixture. Preferably, the matrix polymer comprises a polyester, polystyrene, polyacrylate, thiol-cured epoxy polymer, thiol-cured isocyanate polymer, or mixtures thereof. Preferably, the monomer mixture comprises a thiol monomer and at least one second monomer selected from the group consisting of ene monomer and yne monomer. The compositions may be used to fabricate optical elements such as lenses.
    Type: Application
    Filed: September 7, 2004
    Publication date: March 9, 2006
    Inventors: Jagdish Jethmalani, Andreas Dreher, Gomaa Abdel-Sadek, Jeffrey Chomyn, Jieming Li, Maher Qaddoura
  • Method for synthesis of graft polymers
    Patent number: 6407169
    Abstract: A process for the synthesis of branched graft polymers comprises acylating a first polymer and grafting thereto a second polymer, the second polymer having reactive groups capable of being bound to the acyl groups on the first polymer. The acylation and grafting steps can be repeated to produce graft polymers having a dendritic architecture. The invention also provides polymers produced by the above process, which may be simple branched (comb) polymers, or dendritic polymers.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: June 18, 2002
    Assignee: The University of Waterloo
    Inventors: Mario Gauthier, Jieming Li, Stephane R. Parent, Steven J. Teertstra
  • METHOD FOR SYNTHESIS OF GRAFT POLYMERS
    Publication number: 20020072568
    Abstract: A process for the synthesis of branched graft polymers comprises acylating a first polymer and grafting thereto a second polymer, the second polymer having reactive groups capable of being bound to the acyl groups on the first polymer. The acylation and grafting steps can be repeated to produce graft polymers having a dendritic architecture. The invention also provides polymers produced by the above process, which may be simple branched (comb) polymers, or dendritic polymers.
    Type: Application
    Filed: December 13, 2000
    Publication date: June 13, 2002
    Inventors: Mario Gauthier, Jieming Li, Stephane R. Parent, Steven J. Teertstra