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).
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Publication number: 20240100325Abstract: 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: ApplicationFiled: December 5, 2023Publication date: March 28, 2024Inventors: Jonathan L. Kuhn, Michael P. Campbell, Vladimir Grubac, Kenneth D. Rys, Richard W. Swenson, Charles Lowell Wilson
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Patent number: 8075835Abstract: 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: GrantFiled: March 29, 2006Date of Patent: December 13, 2011Assignee: CMT Materials, Inc.Inventors: Richard W. Campbell, Noel J. Tessier
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Publication number: 20090206512Abstract: 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: ApplicationFiled: February 12, 2009Publication date: August 20, 2009Inventors: Richard W. Campbell, Noel J. Tessier
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Patent number: 6720379Abstract: 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: GrantFiled: November 24, 1999Date of Patent: April 13, 2004Inventors: Richard W. Campbell, Chi Way Lau
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Publication number: 20020149138Abstract: 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: ApplicationFiled: January 23, 2002Publication date: October 17, 2002Inventors: Richard W. Campbell, Noel J. Tessier
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Patent number: 5510182Abstract: 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: GrantFiled: March 29, 1994Date of Patent: April 23, 1996Assignee: General Electric CompanyInventors: Luca P. Fontana, Kenneth F. Miller, Adrianus A. Claesen, Peter W. van Es, Theodorus O. N. de Vroomen, Clayton B. Quinn, Richard W. Campbell
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Patent number: 5510448Abstract: 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: GrantFiled: January 17, 1995Date of Patent: April 23, 1996Assignee: General Electric CompanyInventors: 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
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Patent number: 5360861Abstract: 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: GrantFiled: May 28, 1993Date of Patent: November 1, 1994Assignee: General Electric CompanyInventor: Richard W. Campbell
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Patent number: 5321114Abstract: 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: GrantFiled: April 8, 1993Date of Patent: June 14, 1994Assignee: General Electric CompanyInventors: 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
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Patent number: 4824723Abstract: 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: GrantFiled: June 2, 1986Date of Patent: April 25, 1989Assignee: General Electric CompanyInventors: Richard W. Campbell, Kirk L. Kimbel
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Patent number: 4598129Abstract: 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: GrantFiled: October 23, 1979Date of Patent: July 1, 1986Assignee: General Electric CompanyInventors: Willem F. H. Borman, Richard W. Campbell
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Patent number: 4477529Abstract: 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: GrantFiled: December 29, 1983Date of Patent: October 16, 1984Assignee: General Electric CompanyInventor: Richard W. Campbell
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Patent number: 4451606Abstract: 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: GrantFiled: February 23, 1983Date of Patent: May 29, 1984Assignee: General Electric CompanyInventor: Richard W. Campbell
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Patent number: 4369282Abstract: 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: GrantFiled: December 19, 1980Date of Patent: January 18, 1983Assignee: General Electric CompanyInventor: Richard W. Campbell
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Thermoplastic molding composition having improved warp resistance and process for preparing the same
Patent number: 4337192Abstract: 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: GrantFiled: August 15, 1980Date of Patent: June 29, 1982Assignee: General Electric CompanyInventor: Richard W. Campbell -
Patent number: 4271063Abstract: 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: GrantFiled: December 26, 1978Date of Patent: June 2, 1981Assignee: General Electric CompanyInventors: Willem F. H. Borman, Richard W. Campbell
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Patent number: 4267286Abstract: 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: GrantFiled: July 3, 1979Date of Patent: May 12, 1981Assignee: General Electric CompanyInventor: Richard W. Campbell
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Patent number: D388571Type: GrantFiled: October 8, 1996Date of Patent: December 30, 1997Inventor: Richard W. Campbell