Patents by Inventor Graham D. Darling

Graham D. Darling 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: 6534611
    Abstract: A functional polymer having active and stable functional groups useful for separation or reactive processes in chemical manufacture or analysis is disclosed. The polymer comprises repeat units having structures corresponding to cycloaddition products of polymeric 1-(vinylphenyl)ethylene with electron-poor alkenes. A process for preparing the functional polymer does not require radical reactions or the exclusion of oxygen. The properties of the polymeric matrix produced can be adjusted by modifying the polymer. For example, the polymer particle size and shape, porosity, swellability, surface area, and number, type and distribution of functional groups may be controlled.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: March 18, 2003
    Assignee: Active Materials Inc.
    Inventors: Graham D. Darling, Brent R. Stranix
  • Patent number: 6465580
    Abstract: A functional polymer having active and stable functional groups, for separation or reactive processes in chemical manufacture or analysis, has carbon-linked functional groups on dimethylene spacers; a method of preparation is from pre-existing polymers comprising polymeric 1-(vinylphenyl)ethylene repeat units, by treating with H—X in the presence of free radicals, wherein X comprises a carbon atom that is linked to the —CH[Ph-CH2CH2—]—CH2— remainder of said —CH[Ph-CH2CH2—X]—CH2— repeat unit in said product as a consequence of said reaction; the carbon atom can have characteristics selected from being sp2-hybridized and doubly bonded to an oxygen, being sp3-hybridized and singly bonded to an oxygen, being sp3-hybridized and singly bonded to a nitrogen that is also singly bonded to an sp2-hybridized carbon, being sp3-hybridized and singly bonded to a nitrogen and also to an sp2-hybridized carbon, and being sp3-hybridized and singly bonded
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: October 15, 2002
    Assignee: Active Materials, Inc.
    Inventors: Graham D. Darling, Brent R. Stranix, Jian Ping Gao
  • Patent number: 6448344
    Abstract: A functional polymer having active and stable functional groups, for separation or reactive processes in chemical manufacture or analysis, bears nonmetal oxyacid derivatives on dimethylene spacers; a method of preparation is from pre-existing polymers comprising polymeric 1-(vinylphenyl)ethylene repeat units, including radial copolymers of divinylbenzene, by treating with HX(O)mR1nR2 in presence of free radicals; another method of preparation is by treating a polymer comprising repeat units of the form —CH[Ph—CH2CH2—X(O)mR1nR2]—CH2— where X is of lower oxidation state, with oxidizing agent so as to oxidize X to a higher oxidation state; another method of preparation is to exchange one or both of R1 and R2 substituents in —CH[Ph—CH2CH2—X(O)mR1nR2]—CH2— with other substituents; other functional groups may be present; the functional polymer comprises repeat units of the form —CH[Ph—CH2CH2—X(O)mR1nR2]&mdash
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: September 10, 2002
    Assignee: Active Materials, Inc.
    Inventors: Graham D. Darling, Brent R. Stranix
  • Patent number: 6347411
    Abstract: A composition suitable for use in linings for articles of clothing is disclosed, which is a mixture of a discontinuous solid phase of microballoons, and a viscous liquid continuous phase comprising a polydimethylsiloxane; the polydimethylsiloxane of the continuous phase has a viscosity between 100,000 cs and 2,000,000 cs; the viscosity of the polydimethylsiloxane of the continuous phase is achieved by incorporating polydimethylsiloxane molecules of sufficiently high molecular weight; containment within other materials is optional; additional dyes, pigments, particles, fibers, felts or fabrics can confer additional visibility, strength, stiffness, dryness or friction; accompanying properties of malleability, and thermal, electrical, vibratory, shock and acoustical insulation, also make this composition useful for other applications that require such qualities.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: February 19, 2002
    Assignee: Marine Manufacturing Industries Inc.
    Inventor: Graham D. Darling
  • Patent number: 6127457
    Abstract: A composition suitable as a buoyant putty is disclosed, which is a mixture of a discontinuous solid phase of microballoons, and a viscous liquid continuous phase comprising a polydimethylsiloxane; the polydimethylsiloxane of the continuous phase has a viscosity between 100,000 cs and 2,000,000 cs; the viscosity of the polydimethylsiloxane of the continuous phase is achieved by incorporating polydimethylsiloxane molecules of sufficiently high molecular weight; containment within other materials is optional; additional dyes, pigments, particles, fibers, felts or fabrics can confer additional visibility, strength, stiffness, dryness or friction; accompanying properties of malleability, and thermal, electrical, vibratory, shock and acoustical insulation, also make this composition useful for other applications that require such qualities.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: October 3, 2000
    Assignee: Marine Manufacturing Industries Inc.
    Inventor: Graham D. Darling
  • Patent number: 5895805
    Abstract: A composition useful as a bouyant putty comprises a continuous phase having a viscosity of greater than 100,000 cs and less than a viscosity corresponding to a penetration number of 500 containing a polydimethylsiloxane which is a mixture of a silicone fluid with a viscosity of not more 100,000 cs and a silicone gum possessing a penetration number of from 500 to 1500, and a discontinuous phase of hollow, gas-filled organic polymer microspheres.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: April 20, 1999
    Assignee: Marine Manufacturing Industries Inc.
    Inventor: Graham D. Darling
  • Patent number: 5834230
    Abstract: Substituted aminostyrylpyridinium salts are fluorescent dyes having advantageous characteristics when employed as viscosity probes for the measurement of viscosity in a liquid, especially in a very small volume, for example, in living cells.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: November 10, 1998
    Assignee: McGill University
    Inventors: Graham D. Darling, Seymour Heisler, deceased, Brent R. Stranix, Petra Turkewitsch, Barbara Wandelt