Patents Assigned to CPG, Inc.
  • Method for preparation of controlled pore glass-synthetic resin membrane
    Patent number: 6261497
    Abstract: Particulate inorganic pore material, e.g., controlled pore glass (CPG) embedded porous synthetic resin membrane is prepared by mixing inorganic pore material and an aqueous resin, preferably polytetrafluoroethylene (PTFE), aqueous dispersion to form a paste-like mass, heating the mass at a temperature between 50 to 70° C., and forming the mass into a sheet by calendering. The sheet is then sintered to produce a rigid porous sheet. The membrane may be functionalized, as by silanization. The membrane is useful for the same purposes as controlled pore glass or functionalized controlled pore glass.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: July 17, 2001
    Assignee: CPG, Inc.
    Inventors: Yuan N. Wong, Richard Chen
  • Controlled pore glass-synthetic resin membrane
    Patent number: 5904848
    Abstract: Particulate inorganic pore material, e.g., controlled pore glass (CPG) embedded porous synthetic resin membrane is prepared by mixing inorganic pore material and an aqueous resin, preferably polytetrafluoroethylene (PTFE), aqueous dispersion to form a paste-like mass, heating the mass at a temperature between 50 to 70.degree. C., and forming the mass into a sheet by calendering. The sheet is then sintered to produce a rigid porous sheet. The membrane may be functionalized, as by silanization. The membrane is useful for the same purposes as controlled pore glass or functionalized controlled pore glass.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: May 18, 1999
    Assignee: CPG, Inc.
    Inventors: Yuan N. Wong, Richard Chen
  • Production and use of magnetic porous inorganic materials
    Patent number: 5734020
    Abstract: Magnetic porous inorganic siliceous materials having a particle size of about 1 to about 200 microns useful as solid supports in various chromatography, immunoassays, synthesis and other separation and purification procedures is disclosed.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: March 31, 1998
    Assignee: CPG, Inc.
    Inventor: Yuan N. Wong
  • Production and use of magnetic porous inorganic materials
    Patent number: 5610274
    Abstract: Magnetic porous inorganic siliceous materials having a particle size of about 1 to about 200 microns useful as solid supports in various chromatography, immunoassays, synthesis and other separation and purification procedures as disclosed.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: March 11, 1997
    Assignee: CPG, Inc.
    Inventor: Yuan N. Wong
  • Prepasration and use of magnetic controlled pore glass having oligonucleotides synthesized thereon
    Patent number: 5601979
    Abstract: A functionalized, magnetic controlled pore glass support useful in solid phase DNA synthesis is described. The support acts as a universal solid phase for direct oligonucleotide synthesis. The oligonucleotide bound MPG is useful directly to isolate or purify oligonucleotides which possess a section of complementary sequences.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: February 11, 1997
    Assignee: CPG, Inc.
    Inventor: Yuan N. Wong