Patents Represented by Attorney Charles T. Watts

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  • Rotary sealant abradable material and method for making
    Patent number: 4150998
    Abstract: Abradable materials useful as rotary sealant are provided and a method for making such materials. A mixture of silicon powder having a particular particle size range, carbon fiber and a binder is initially pressed to shape and thereafter heated in a mold to an elevated temperature to produce a shaped abradable mass.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: April 24, 1979
    Assignee: General Electric Company
    Inventor: Charles R. Morelock
  • Method of making molten silicon infiltration reaction products and products made thereby
    Patent number: 4148894
    Abstract: Infiltration reaction products are provided of molten silicon and certain blends of particulated carbon and various particulated inorganic materials substantially unreactive to molten silicon, such as boron nitride particles. These molten silicon infiltration products of reaction are readily machinable and can be applied, or formed in-situ as contiguous layers on silicon carbide, or silicon-silicon carbide substrates, etc., to produce multilayer composites having an improved strength over the base refractory structure.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: April 10, 1979
    Assignee: General Electric Company
    Inventors: William B. Hillig, Charles R. Morelock
  • Graft modified polyethylene process and product
    Patent number: 4147740
    Abstract: A graft modified polyethylene process is described which comprises contacting polyethylene with an organic peroxide in the presence of an ethylenically unsaturated polycarboxylic acid or derivative thereof at a temperature of from 140.degree.-210.degree. C. The resulting graft modified polyethylene in combination with polyamides provide polymer blends having improved impact properties.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: April 3, 1979
    Assignee: General Electric Company
    Inventors: Roger T. Swiger, Peter C. Juliano
  • Poly(organosiloxy) telechelic styrene polymer process
    Patent number: 4146697
    Abstract: A poly(organosiloxy) telechelic styrene polymer polymerization process comprising contacting an olefin, a free radical polymerization initiator, and a poly(organosiloxyaryl) polysulfide is described. The poly(organosiloxy) terminated styrene polymers can be end capped and/or coupled with other polymeric materials. The styrene polymers can be molded, calendered, or extruded as films, sheets, fibers, laminates or other useful articles of manufacture.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: March 27, 1979
    Assignee: General Electric Company
    Inventor: Dwain M. White
  • Composite substrate for rotating x-ray anode tube
    Patent number: 4145632
    Abstract: A composite substrate for use in a rotating x-ray anode tube consists of a graphite member joined to another member to which a target anode is affixed.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: March 20, 1979
    Assignee: General Electric Company
    Inventor: Thomas M. Devine, Jr.
  • Critical gas boundary layer Reynolds number for enhanced processing of glassy alloy ribbons
    Patent number: 4144926
    Abstract: A critical gas boundary layer Reynolds number has been defined to indicate conditions under which glassy alloy ribbons with serrated edges and surface perforations result when processing under various gaseous atmospheres and pressures.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: March 20, 1979
    Assignee: General Electric Company
    Inventor: Howard H. Liebermann
  • Fingerprinting crystals
    Patent number: 4143544
    Abstract: A diamond or cubic boron nitride crystal containing growth discontinuities resulting from changes in the environment of the growing crystal and having at least one smooth outside surface which intersects the growth discontinuities is charged electrostatically, a fine powder is applied to the charged smooth surface and the applied powder produces a pattern on the charged surface which is a delineation of the intersected growth discontinuities.
    Type: Grant
    Filed: June 22, 1977
    Date of Patent: March 13, 1979
    Assignee: General Electric Company
    Inventors: Robert C. DeVries, Roy E. Tuft
  • Liquid-cooled turbine bucket with enhanced heat transfer performance
    Patent number: 4142831
    Abstract: Individual coolant passages in the airfoil portion of a liquid-cooled turbine bucket are each provided with a plurality of inwardly protruding circumferentially-extending crimps or rings located at spaced intervals along each passage, each crimp, protrusion or ring extending along the inner periphery in a plane generally perpendicular to the wall of the coolant passage at that location. The main flow of liquid coolant moving in each such individual passage during turbine operation under the combined influence of centrifugal and Coriolis forces is broken up and dispersed over an enlarged area of the interior of the coolant passage upon encountering the protrusions.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: March 6, 1979
    Assignee: General Electric Company
    Inventors: James T. Dakin, Kenneth A. Darrow, Myron C. Muth
  • Method for rapid removal of cores made of .beta.Al.sub.2 O.sub.3 from directionally solidified eutectic and superalloy and superalloy materials
    Patent number: 4141781
    Abstract: Caustic solutions are employed in an autoclave process to rapidly remove cores made of .beta.-Al.sub.2 O.sub.3 from directionally solidified eutectic alloy and superalloy materials.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: February 27, 1979
    Assignee: General Electric Company
    Inventors: Charles D. Greskovich, Marcus P. Borom
  • Method of making a shaped silicon carbide-silicon matrix composite and articles made thereby
    Patent number: 4141948
    Abstract: A method is described for making a shaped silicon carbide-silicon matrix composite. A confined carbon fiber preform is infiltrated with sufficient molten silicon metal at a temperature in the range of from about 1400.degree. C. to about 1800.degree. C. in an inert atmosphere or vacuum.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: February 27, 1979
    Assignee: General Electric Company
    Inventors: William Laskow, Charles R. Morelock
  • Novel polyetherimide-polyester blends
    Patent number: 4141927
    Abstract: This invention is concerned with a new class of polyetherimide-polyester blends. More particularly, the invention is concerned with polyetherimide-polyester blends which exhibit melt viscosities lower than those associated with the polyetherimide component of the blends. The polyetherimide-polyester blends are suitable for the manufacture of filaments, fibers, films, molding compounds, coatings, etc.
    Type: Grant
    Filed: May 22, 1975
    Date of Patent: February 27, 1979
    Assignee: General Electric Company
    Inventors: Dwain M. White, Robert O. Matthews
  • Process of forming quinone-coupled polyphenylene oxides
    Patent number: 4140675
    Abstract: A process of forming a quinone-coupled polyphenylene oxide is described which comprises contacting a polyphenylene oxide, wherein said contacting is carried out with a quinone in the substantial absence of any monophenol reactant and any active oxidative coupling catalyst system. The resulting new polymers have improved color and in combination with styrene resins provide thermoplastic compositions having improved chemical and physical properties.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: February 20, 1979
    Assignee: General Electric Company
    Inventor: Dwain M. White
  • Process for selective etching of polymeric materials embodying silicones therein
    Patent number: 4140572
    Abstract: Titanium is employed as a masking material for the selective etching of a coating material of a polyimide-silicone copolymer disposed on selective surface areas of electronic devices.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: February 20, 1979
    Assignee: General Electric Company
    Inventor: Leonard Stein
  • Cyclic carbonate trimer of 2,2-bis(4-hydroxyphenyl)-1,1-dichloroethylene
    Patent number: 4139687
    Abstract: The cyclic carbonate trimer of 2,2-bis(4-hydroxyphenyl)-1,1-dichloroethylene is provided which can be employed as a flame retardant for a variety of thermoplastic organic polymers, such as high molecular weight bisphenol-A polycarbonate. This cyclic carbonate trimer also can be employed as a precursor for making high molecular weight phenyl dichloroethylene polycarbonate.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: February 13, 1979
    Assignee: General Electric Company
    Inventor: Keith N. Sannes
  • Process for preparing diphenyl haloethylenes
    Patent number: 4139721
    Abstract: Diphenyl chloroethylenes are prepared by the reaction of either phenol or anisole with a trihaloethylene compound.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: February 13, 1979
    Assignee: General Electric Company
    Inventor: John R. Campbell
  • Coating method and composition using cationic photoinitiators polythio components and polyolefin components
    Patent number: 4139385
    Abstract: A coating method is provided based on the use of a UV curable mixture of a polyolefin and a polythiol having an onium salt photoinitiator. There are also provided, ultraviolet radiation curable compositions useful as coating compositions.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: February 13, 1979
    Assignee: General Electric Company
    Inventor: James V. Crivello
  • Photo-curing method for epoxy resin using group VIa onium salt
    Patent number: 4138255
    Abstract: Cationic polymerization of epoxy resin materials, such as epoxy monomers or prepolymers, can be achieved by use of certain radiation sensitive aromatic onium salts of Group VIa elements. Curable compositions are provided which can be used as sealants, coating compounds, encapsulants, etc.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: February 6, 1979
    Assignee: General Electric Company
    Inventor: James V. Crivello
  • Purification of dichloroethylene compound
    Patent number: 4137421
    Abstract: Impure 1,1-dichloro-2,2-bis(4-hydroxyphenyl)ethylene can be purified by heating the latter either with phenol alone or with a mixture of methylene chloride and phenol, allowing the heated mixture to cool until crystallization occurs and removing the above-identified purified dichloroethylene compound.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: January 30, 1979
    Assignee: General Electric Company
    Inventors: Ming K. Li, Michael R. MacLaury
  • Method for making aromatic cyclic polyformals
    Patent number: 4136087
    Abstract: A method is provided for making aromatic cyclic polyformals by effecting reaction between a methylene halide and an anhydrous bisphenol dianion, followed by a precipitation and an extraction of the resulting aromatic polyformal reaction product. The aromatic cyclic polyformals can be used as plasticizers for organic polymers for making wire coating formulations.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: January 23, 1979
    Assignee: General Electric Company
    Inventors: Frank J. Williams, III, Paul E. Donahue
  • Photoinitiators
    Patent number: 4136102
    Abstract: Halogen onium salts, and onium salts of Group VA and V1A elements having an MF.sub.6.sup.- anion, where M is selected from P, As and Sb, have been found to exhibit unusual activity under ultraviolet light. These onium salts can be employed as cationic photoinitiators when used with a variety of organic resins and cyclic organic compounds.
    Type: Grant
    Filed: April 21, 1973
    Date of Patent: January 23, 1979
    Assignee: General Electric Company
    Inventor: James V. Crivello