Patents by Inventor Berni P. Chong

Berni P. Chong 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).

  • Filter aid materials bearing anion exchange resins
    Patent number: 4594158
    Abstract: Conventional filter aid materials are treated with anion exchange resin materials having particle diameters smaller than 1 micrometer to produce an improved filter aid material bearing a fixed monolayer of the anion exchange resins.
    Type: Grant
    Filed: September 3, 1981
    Date of Patent: June 10, 1986
    Assignee: Rohm and Haas
    Inventors: Berni P. Chong, Eric G. Isacoff
  • Emulsion copolymer cation exchange resins
    Patent number: 4380590
    Abstract: Emulsion copolymer particles with diameters smaller than 1.5 micrometers and functionalized with cation exchange functional groups are prepared and suspended as emulsions in liquid media to form liquid cation exchange materials.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: April 19, 1983
    Assignee: Rohm and Haas Company
    Inventor: Berni P. Chong
  • Emulsion copolymer anion exchange resins
    Patent number: 4359537
    Abstract: Emulsion copolymer particles with diameters less than 1.5 micrometers are functionalized with anion exchange functional groups by a method involving coagulation of the emulsion. Both weakly basic and strongly basic anion exchange resins are prepared from aromatic or acrylic copolymers, and the emulsion coagula may be resuspended to form anion exchange emulsions.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: November 16, 1982
    Assignee: Rohm and Haas Company
    Inventor: Berni P. Chong
  • Filtration and deionization prepared from cationic and anionic emulsion ion exchange resins
    Patent number: 4312956
    Abstract: Flocs prepared by mixing cationic and anionic emulsion ion exchange resins are useful as a filtration and deionization medium. Flocs prepared from weakly acidic and weakly basic emulsion ion exchange resins may be regenerated thermally.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: January 26, 1982
    Assignee: Rohm and Haas Company
    Inventors: Berni P. Chong, Eric G. Isacoff, James W. Neely
  • Ion exchange material prepared from partially pyrolyzed macroporous polymer particles
    Patent number: 4265768
    Abstract: Macroporous styrene polymer particles which have been partially pyrolyzed at temperatures between 300.degree. and 800.degree. C. to form non-functionalized, carbonaceous adsorbents, are functionalized according to this invention to produce weak base, strong base, weak acid or strong acid, dense ion exchange particles, or precursors thereof, using such reactions as halogenation, sulfonation, chloromethylation, chlorosulfonation and oxidation, alone or followed by aminolysis or other conventional functionalization reactions.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: May 5, 1981
    Assignee: Rohm and Haas Company
    Inventors: Glenn H. Beasley, Berni P. Chong, Warren T. Ford, James W. Neely
  • Flocs for filtration and deionization prepared from cationic and anionic emulsion ion exchange resins
    Patent number: 4200695
    Abstract: Flocs prepared by mixing cationic and anionic emulsion ion exchange resins are useful as a filtration and deionization medium. Flocs prepared from weakly acidic and weakly basic emulsion ion exchange resins may be regenerated thermally.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: April 29, 1980
    Assignee: Rohm and Haas Company
    Inventors: Berni P. Chong, Eric G. Isacoff, James W. Neely
  • Ion exchange process involving emulsion ion exchange resins
    Patent number: 4191812
    Abstract: Ions are exchanged between emulsion ion exchange resins and conventional ion exchange resins during both batch and column contact. This process may be used to place the emulsion resin or the conventional resin in the desired ionic form.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: March 4, 1980
    Assignee: Rohm and Haas Company
    Inventor: Berni P. Chong
  • Inert interface beads of a crosslinked copolymer of methyl methacrylate and hydroxyalkyl methacrylate for regeneration of mixed bed ion exchange columns
    Patent number: 4151332
    Abstract: Beads of an inert, crosslinked copolymer of methyl methacrylate and hydroxyalkyl methacrylate are used as an interface separator during the regeneration of mixed-bed ion exchange columns; the beads have a settling rate intermediate between that of the cation and anion exchange resins of the mixed-bed system.
    Type: Grant
    Filed: February 2, 1978
    Date of Patent: April 24, 1979
    Assignee: Rohm and Haas Company
    Inventors: Berni P. Chong, Robert R. Rowe