Patents by Inventor Charles C. Chan

Charles C. Chan 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).

  • Patent number: 9133295
    Abstract: Methods for making polymer particles in gel form via an emulsion and/or suspension polymerization are provided. In at least one specific embodiment, the method can include reacting a first reaction mixture comprising a phenolic monomer, an aldehyde monomer, and a first catalyst to produce a prepolymer. The method can also include combining the prepolymer with a carrier fluid and a second catalyst to produce a second reaction mixture. The second catalyst can include a dicarboxylic acid, an anhydride, a dihydroxybenzene, or any mixture thereof. The method can also include polymerizing the prepolymer to form polymer particles in gel form.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: September 15, 2015
    Assignee: Georgia-Pacific Chemicals LLC
    Inventors: Shahid P. Qureshi, Xing Dong, Charles C. Chan, Joseph Frank Ludvik
  • Publication number: 20140148560
    Abstract: Methods for making polymer particles in gel form via an emulsion and/or suspension polymerization are provided. In at least one specific embodiment, the method can include reacting a first reaction mixture comprising a phenolic monomer, an aldehyde monomer, and a first catalyst to produce a prepolymer. The method can also include combining the prepolymer with a carrier fluid and a second catalyst to produce a second reaction mixture. The second catalyst can include a dicarboxylic acid, an anhydride, a dihydroxybenzene, or any mixture thereof. The method can also include polymerizing the prepolymer to form polymer particles in gel form.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 29, 2014
    Applicant: Georgia-Pacific Chemicals LLC
    Inventors: Shahid P. Qureshi, Xing Dong, Charles C. Chan, Joseph Frank Ludvik
  • Patent number: 7642333
    Abstract: An anhydride and resorcinol latent catalyst system for a phenolic resole resin provides a resin having long pot life and long shelf life, yet cures quickly thereafter.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: January 5, 2010
    Assignee: Georgia-Pacific Chemicals LLC
    Inventors: Shahid P. Qureshi, Charles C. Chan
  • Publication number: 20080293911
    Abstract: An anhydride and resorcinol latent catalyst system for a phenolic resole resin provides a resin having long pot life and long shelf life, yet cures quickly thereafter.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 27, 2008
    Applicant: Georgia-Pacific Chemicals LLC
    Inventors: Shahid P. Qureshi, Charles C. Chan
  • Patent number: 7087703
    Abstract: This invention relates to a resin composition capable of being thermally cured while minimizing or eliminating voids in the resulting composite, the composition having both a long pot life at low temperatures and a fast curing rate at higher temperatures containing a mixture of (a) a phenol-formaldehyde resole resin, and (b) an etherified hardener, the etherified hardener being prepared from an alkoxylated polyol or a mono epoxy functional diluent.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: August 8, 2006
    Assignee: Georgia-Pacific Resins, Inc.
    Inventors: Shahid P. Qureshi, Charles C. Chan