Patents by Inventor David Lok

David Lok 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).

  • Bifunctional-modified hydrogels
    Patent number: 8025901
    Abstract: Disclosed are hydrogels wherein a polymer matrix is modified to contain a bifunctional poly(alkylene glycol) molecule covalently bonded to the polymer matrix. The hydrogels can be cross-linked using, for example, glutaraldehyde. The hydrogels may also be crosslinked via an interpenetrating network of a photopolymerizable acrylates. The hydrogels may also be modified to have pharmacologically-active agents covalently bonded to the poly(alkylene glycol) molecules or entrained within the hydrogel. Living cells may also be entrained within the hydrogels.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: September 27, 2011
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Weiyuan John Kao, Jing Li, David Lok, Rathna Gundloori
  • BIFUNCTIONAL-MODIFIED HYDROGELS
    Publication number: 20100209509
    Abstract: Disclosed are hydrogels wherein a polymer matrix is modified to contain a bifunctional poly(alkylene glycol) molecule covalently bonded to the polymer matrix. The hydrogels can be cross-linked using, for example, glutaraldehyde. The hydrogels may also be crosslinked via an interpenetrating network of a photopolymerizable acrylates. The hydrogels may also be modified to have pharmacologically-active agents covalently bonded to the poly(alkylene glycol) molecules or entrained within the hydrogel. Living cells may also be entrained within the hydrogels.
    Type: Application
    Filed: November 10, 2009
    Publication date: August 19, 2010
    Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Weiyuan John Kao, Jing Li, David Lok, Rathna Gundloori
  • Bifunctional-modified hydrogels
    Patent number: 7615593
    Abstract: Disclosed are hydrogels wherein a polymer matrix is modified to contain a bifunctional poly(alkylene glycol) molecule covalently bonded to the polymer matrix. The hydrogels can be cross-linked using, for example, glutaraldehyde. The hydrogels may also be crosslinked via an interpenetrating network of a photopolymerizable acrylates. The hydrogels may also be modified to have pharmacologically-active agents covalently bonded to the poly(alkylene glycol) molecules or entrained within the hydrogel. Living cells may also be entrained within the hydrogels.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: November 10, 2009
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Weiyun John Kao, Jing Li, David Lok, Rathna Gundloori
  • Bifunctional-modified hydrogels
    Publication number: 20060100369
    Abstract: Disclosed are hydrogels wherein a polymer matrix is modified to contain a bifunctional poly(alkylene glycol) molecule covalently bonded to the polymer matrix. The hydrogels can be cross-linked using, for example, glutaraldehyde. The hydrogels may also be crosslinked via an interpenetrating network of a photopolymerizable acrylates. The hydrogels may also be modified to have pharmacologically-active agents covalently bonded to the poly(alkylene glycol) molecules or entrained within the hydrogel. Living cells may also be entrained within the hydrogels.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 11, 2006
    Inventors: Weiyuan Kao, Jing Li, David Lok, Rathna Gundloori
  • Bifunctional-modified hydrogels
    Publication number: 20050276858
    Abstract: Disclosed are hydrogels wherein a polymer matrix is modified to contain a bifunctional poly(alkylene glycol) molecule covalently bonded to the polymer matrix. The hydrogels can be cross-linked using, for example, glutaraldehyde. The hydrogels may also be crosslinked via an interpenetrating network of a photopolymerizable acrylates. The hydrogels may also be modified to have pharmacologically-active agents covalently bonded to the poly(alkylene glycol) molecules or entrained within the hydrogel. Living cells may also be entrained within the hydrogels.
    Type: Application
    Filed: March 30, 2005
    Publication date: December 15, 2005
    Inventors: Weiyuan Kao, Jeffrey Phillips, Jing Li, David Lok, Rathna Gundloori
  • Bifunctional-modified hydrogels
    Publication number: 20030083389
    Abstract: Disclosed are hydrogels wherein a polymer matrix is modified to contain a bifunctional poly(alkylene glycol) molecule covalently bonded to the polymer matrix. The hydrogels can be cross-linked using, for example, glutaraldehyde. The hydrogels may also be crosslinked via an interpenetrating network of a photopolymerizable acrylates. The hydrogels may also be modified to have pharmacologically-active agents covalently bonded to the poly(alkylene glycol) molecules or entrained within the hydrogel. Living cells may also be entrained within the hydrogels.
    Type: Application
    Filed: April 23, 2002
    Publication date: May 1, 2003
    Inventors: Weiyun John Kao, Jing Li, David Lok
  • Container
    Patent number: D914457
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 30, 2021
    Assignee: JRD Marketing, LLC
    Inventors: Weng Pan Chao, David Lok