Patents by Inventor Richard W. Campbell

Richard W. Campbell 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).

  • Publication number: 20240100325
    Abstract: A fixation component includes tines extending from a base portion of the fixation component. Each tine is elastically deformable between a pre-set position and an open position. Each tine includes a hook segment extending from a proximal end near the base portion to a distal end. Each tine also includes a distal segment extending from the distal end of the hook segment to a tissue-piercing tip. When positioned in the pre-set position, the hook segment extends along a pre-set curvature that encloses an angle between 135 degrees and 270 degrees, and the distal segment extends away from a longitudinal axis of the fixation component.
    Type: Application
    Filed: December 5, 2023
    Publication date: March 28, 2024
    Inventors: Jonathan L. Kuhn, Michael P. Campbell, Vladimir Grubac, Kenneth D. Rys, Richard W. Swenson, Charles Lowell Wilson
  • Patent number: 8075835
    Abstract: The present invention provides an improved syntactic foam plug for plug assist thermoforming wherein such plug is composed of a thermoplastic material having a relatively high melting and/or glass transition temperature. Accordingly, the subject invention encompasses diminishing or removing the undesirable characteristics of thermoset syntactic plugs while increasing the ease by which these articles may be constructed for a given use, by forming such plugs from syntactic foams containing thermoplastics.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: December 13, 2011
    Assignee: CMT Materials, Inc.
    Inventors: Richard W. Campbell, Noel J. Tessier
  • Publication number: 20090206512
    Abstract: The present invention provides an improved syntactic foam plug for plug assist thermoforming wherein such plug is composed of a thermoplastic material having a relatively high melting and/or glass transition temperature. Accordingly, the subject invention encompasses diminishing or removing the undesirable characteristics of thermoset syntactic plugs while increasing the ease by which these articles may be constructed for a given use, by forming such plugs from syntactic foams containing thermoplastics.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 20, 2009
    Inventors: Richard W. Campbell, Noel J. Tessier
  • Patent number: 6720379
    Abstract: Resins suitable for use in compression molding processes are prepared by mixing between about 10 and 30 weight % of chopped partially carbonized fibers, i.e. fibers having a carbon content of between about 70 to 95% by weight and an average size of about 100 &mgr;m, with compression grade molding resins. Typically the compression grade molding resins are about 100 &mgr;m When chopped carbon fibers of reduced conductivity are used the curve obtained by plotting the resistivity against the concentration of carbon fibers is less steep in the critical regions of interest (i.e., between about 1010 and 1012 and between about 106 and 109) than is the curve obtained when high conductivity fibers are used. It has been observed that even if some dielectric breakdown occurs, the connected fibers are not as conductive and the effect has been found not to be as significant as is the case with the usual carbon fibers which have maximized conductivity.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: April 13, 2004
    Inventors: Richard W. Campbell, Chi Way Lau
  • Publication number: 20020149138
    Abstract: The present invention provides an improved syntactic foam plug for plug assist thermoforming wherein such plug is composed of a thermoplastic material having a relatively high melting and/or glass transition temperature. Accordingly, the subject invention encompasses diminishing or removing the undesirable characteristics of thermoset syntactic plugs while increasing the ease by which these articles may be constructed for a given use, by forming such plugs from syntactic foams containing thermoplastics.
    Type: Application
    Filed: January 23, 2002
    Publication date: October 17, 2002
    Inventors: Richard W. Campbell, Noel J. Tessier
  • Patent number: 5510182
    Abstract: A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 10 to about 20 carbon atoms, inclusive, and is present in the copolyestercarbonate in quantities of from about 2 to 30 mole percent of the dihydric phenol.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: April 23, 1996
    Assignee: General Electric Company
    Inventors: Luca P. Fontana, Kenneth F. Miller, Adrianus A. Claesen, Peter W. van Es, Theodorus O. N. de Vroomen, Clayton B. Quinn, Richard W. Campbell
  • Patent number: 5510448
    Abstract: A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 10 to about 20 carbon atoms, inclusive, and is present in the copolyestercarbonate in quantities of from about 2 to 30 mole percent of the dihydric phenol.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: April 23, 1996
    Assignee: General Electric Company
    Inventors: Luca P. Fontane, Kenneth F. Miller, Christianus A. A. Claesen, Peter W. van Es, Theodorus O. N. de Vroomen, Clayton V. Quinn, Richard W. Campbell
  • Patent number: 5360861
    Abstract: Polyester-carbonate resins blended with a fibrous reinforcing agent, an impact-modifier and optionally a flame-retarding agent are used to mold articles such as structural panels. The articles exhibit improved impact-resistance without significant loss of elastic modulus and fire-retardancy.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: November 1, 1994
    Assignee: General Electric Company
    Inventor: Richard W. Campbell
  • Patent number: 5321114
    Abstract: A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 10 to about 20 carbon atoms, inclusive, and is present in the copolyestercarbonate in quantities of from about 2 to 30 mole percent of the dihydric phenol.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: June 14, 1994
    Assignee: General Electric Company
    Inventors: Luca P. Fontana, Kenneth F. Miller, Christianus A. A. Claesen, Peter W. van Es, Theodorus O. N. de Vroomen, Clayton B. Quinn, Richard W. Campbell
  • Patent number: 4824723
    Abstract: A flame resistant electrically insulating multilayer material is described herein, in which a flame resistant core which may be comprised of coextrudable, thermoformable thermoplastic materials has at least one electrically insulating outer layer attached thereto. Preferred polymeric materials forming the core include blends of polycarbonates with halogen-containing polycarbonates. Each outer layer typically may be formed from polycarbonates and linear polyesters. The multilayer material may be shaped to surround and shield any sensitive device requiring protection from high voltage arcing or fire.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: April 25, 1989
    Assignee: General Electric Company
    Inventors: Richard W. Campbell, Kirk L. Kimbel
  • Patent number: 4598129
    Abstract: Novel thermoplastic block carbonate-carboxylate copolyesters useful in films and molded articles are prepared by the interesterification of (a) high molecular weight aromatic carbonate polymers and (b) a copolyester of a linear aliphatic dicarboxylic acid and, optionally, an aromatic dibasic acid such as terephthalic or isophthalic acid with one or more straight or branched chain dihydric aliphatic glycols, or with a block copolyester of poly(1,4-butylene terephthalates) and polybutylene oxide or an aromatic/aliphatic polyester, a mixture of poly(1,4-butylene terephthalate) and a polyester of a linear aliphatic dicarboxylic acid and a branched chain dihydric aliphatic glycol or a poly(butylene oxide).
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: July 1, 1986
    Assignee: General Electric Company
    Inventors: Willem F. H. Borman, Richard W. Campbell
  • Patent number: 4477529
    Abstract: A plastic article having adhered thereto a translucent and decorative UV cured coating on the surface thereof which coating is wrinkled in a macroscopically irregular but microscopically regular manner and comprised of the photoreaction products of (i) certain polyfunctional acrylate monomers (ii) certain polysiloxane-polyether block copolymer surfactants and (iii) azobisisobutyronitrile.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: October 16, 1984
    Assignee: General Electric Company
    Inventor: Richard W. Campbell
  • Patent number: 4451606
    Abstract: Novel nucleating agents have been discovered which are effective in polyesters, especially poly(ethylene terephthalate). The novel nucleating agents are copolymers derived from a poly(alkylene terephthalate) and a sulfonate salt.Also provided by this invention are a process for nucleating polyesters, particularly poly(alkylene terephthalates), especially poly(ethylene terephthalate) and the compositions so produced.
    Type: Grant
    Filed: February 23, 1983
    Date of Patent: May 29, 1984
    Assignee: General Electric Company
    Inventor: Richard W. Campbell
  • Patent number: 4369282
    Abstract: Modified thermoplastic polyester compositions are provided which comprise (a) a poly(1,4-butylene terephthalate) resin or polyester copolymer and, optionally, a poly(ethylene terephthalate) resin and (b) a modifier therefor comprising a combination of a polyacrylate resin or a vinyl aromatic-diene block copolymer resin and a poly(1,3-butylene terephthalate), and, optionally (c) filler and/or reinforcing agent and/or (d) a flame retardant or combination of flame retardants. Modifier (b) provides enhanced resistance to impact fracture in articles molded from the compositions.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: January 18, 1983
    Assignee: General Electric Company
    Inventor: Richard W. Campbell
  • Patent number: 4337192
    Abstract: Thermoplastic molding compositions are described, comprising a high molecular weight linear polyester or polyesters, optionally in admixture with block copolyesters, an impact modifier and a filler. These compositions are moldable into articles having improved properties.
    Type: Grant
    Filed: August 15, 1980
    Date of Patent: June 29, 1982
    Assignee: General Electric Company
    Inventor: Richard W. Campbell
  • Patent number: 4271063
    Abstract: A thermoplastic molding composition having improved physical properties is provided, the composition comprising an intimate admixture of a high molecular weight polyester, from about 0.1 to about 25% by weight, based on the total composition, of a copolymer of ethylene and vinyl acetate and a filler, said composition having been prepared by melt blending the polyester, the copolymer and the filler and further reacting the resultant blend in the solid state.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: June 2, 1981
    Assignee: General Electric Company
    Inventors: Willem F. H. Borman, Richard W. Campbell
  • Patent number: 4267286
    Abstract: Modified thermoplastic polyester compositions are provided which comprise (a) a poly(1,4-butylene terephthalate) resin or polyester copolymer and, optionally, a poly(ethylene terephthalate) resin and (b) a modifier therefor comprising a combination of a polyacrylate resin or a vinyl aromatic-diene block copolymer resin and a poly(1,3-butylene terephthalate), and, optionally (c) filler and/or reinforcing agent and/or (d) a flame retardant or combination of flame retardants. Modifier (b) provides enhanced resistance to impact fracture in articles molded from the compositions.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: May 12, 1981
    Assignee: General Electric Company
    Inventor: Richard W. Campbell
  • Patent number: D388571
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: December 30, 1997
    Inventor: Richard W. Campbell