Patents Represented by Attorney J. T. Cohen
  • Patent number: 4109063
    Abstract: A composite body has a substrate with opposite major surfaces, the substrate has a solid ion-conductive electrolyte material region and at least a portion of at least one major surface of a solid ion-insulating material region, and at least one moderately deformable metallic element bonded directly to the ion-insulating material of the substrate, the metal of the metallic element different from the metal of the mobile ions of the solid ion-conductive electrolyte material region.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: August 22, 1978
    Assignee: General Electric Company
    Inventor: Bruce S. Dunn
  • Patent number: 4102689
    Abstract: Alumina doped with from 1 mole percent up to about 20 mole percent magnesia is suitable for use as a core material for casting and directional solidification of advanced super-alloys. The core material is leachable in KOH and NaOH in an autoclave at an elevated temperature and elevated pressure.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: July 25, 1978
    Assignee: General Electric Company
    Inventor: Marcus P. Borom
  • Patent number: 4101294
    Abstract: A clean, cool stream of low BTU gas is heated and saturated with water vapor by means of a hot liquid stream containing water. Contamination of the gas stream by droplets, particulate matter and salt content of the liquid stream is obviated by maintaining separation between the gas and liquid phases by means of a microporous barrier. The barrier is made of a material selected from the group consisting of hydrophobic polymer material and hydrophilic polymer material having a gel structure.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: July 18, 1978
    Assignee: General Electric Company
    Inventor: Shiro G. Kimura
  • Patent number: 4101715
    Abstract: A high temperature oxidation and corrosion resistant coated nickel-base superalloy article comprising (a) a nickel-base superalloy article, and (b) a first CoCrAl(Y) coating composition consisting essentially of, on a weight basis, approximately 26-32% chromium, 3-9% aluminum, 0-1% yttrium, the rare earth elements, platinum or rhodium, and the balance nickel.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: July 18, 1978
    Assignee: General Electric Company
    Inventor: John R. Rairden, III
  • Patent number: 4101713
    Abstract: A flame sprayed high energy milled powder coated article comprising a superalloy substrate and a coating consisting of chromium and at least one element selected from iron, cobalt or nickel. Optionally the coating can contain other elements, e.g., aluminum, carbon, yttrium or the rare earth elements.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: July 18, 1978
    Assignee: General Electric Company
    Inventors: Harold H. Hirsch, John R. Rairden, III
  • Patent number: 4098800
    Abstract: Disclosed is a process for preparing oligomeric polyetheramide-acid by reacting an aromatic dianhydride component including an aromatic bis(ether anhydride) with an organic diamine in an inert organic liquid selected from methylene chloride, chloroform, 1,2-dichloroethane, and mixtures thereof with acetone. The oligomeric polyetheramide-acid is substantially insoluble in the inert organic liquid, in which the oligomer typically appears as a precipitate which may be recovered in powder or finely divided particulate form without need for grinding.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: July 4, 1978
    Assignee: General Electric Company
    Inventors: Eugene G. Banucci, Martin A. Byrne
  • Patent number: 4098586
    Abstract: Symmetrical stepped grate/rabble arm combinations for use in a fixed bed coal gasifier are shown in which the stepped grates comprise step plates having in combination threwith means for controlling the rate of discharge of solids therefrom. The solids discharge controlling means described comprise adjustable mechanical dams at spaced locations along the step plate periphery together with means for the positioning thereof.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: July 4, 1978
    Assignee: General Electric Company
    Inventor: Donald E. Woodmansee
  • Patent number: 4099075
    Abstract: In signal detection apparatus for sensing large excursion of a time varying signal from its average value, charge transfer circuits are utilized to provide a threshold level for detection which adapts to the changing average value of the background component of the time varying signal.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: July 4, 1978
    Assignee: General Electric Company
    Inventors: Howard S. Goldberg, William E. Engeler, Richard D. Baertsch
  • Patent number: 4098846
    Abstract: A process of forming self-condensation products of a phenol under polymer-forming reaction conditions which comprises contacting a phenol with oxygen in the presence of a secondary aliphatic amine and an effective manganese chelate complex is described. The resulting polyphenylene oxide resins in combination with styrene resins provide thermoplastic compositions having improved impact strength.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: July 4, 1978
    Assignee: General Electric Company
    Inventor: Walter K. Olander
  • Patent number: 4097886
    Abstract: Geometries suitable for split or paired electrode structures of small effective dimensions which are readily implementable with a high degree of accuracy are provided.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: June 27, 1978
    Assignee: General Electric Company
    Inventors: Richard D. Baertsch, Jerome J. Tiemann
  • Patent number: 4097226
    Abstract: A furnace for practising temperature gradient zone melting on one or more semiconductor bodies comprises a closable work chamber for receiving semiconductor bodies for processing, a radiant heat source which forms a first closure member and a heat sink which forms a second closure member, the closure members defining the work chamber and being mutually separable by, for example, a hydraulic actuator to allow access to the interior of the work chamber. A reflector is disposed between the heat source and heat sink in surrounding relationship to the semiconductor bodies being processed to ensure the maintenance of a uniform temperature gradient within the work chamber. The reflector and the heat sink are liquid cooled for the effective removal of heat therefrom. The heat sink is further provided with a plurality of radiation attenuating cavities to enhance the performance of the heat sink.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: June 27, 1978
    Assignee: General Electric Company
    Inventors: Carl A. Erikson, John O. Fielding, Harvey E. Cline, Thomas R. Anthony
  • Patent number: 4097343
    Abstract: A boron-containing electrical steel sheet is provided with an electrolytically-deposited boron-containing Mg(OH).sub.2 primary coating about 0.05 mil thick and a secondary coating of electrolytically-deposited Mg(OH).sub.2 about 0.15 mil thick.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: June 27, 1978
    Assignee: General Electric Company
    Inventors: Ronald H. Arendt, Matthew J. Curran
  • Patent number: 4097292
    Abstract: A ceramic article suitable for use in the casting of advanced superalloy materials has a structure of a predetermined porosity content and consists of either 3Y.sub.2 O.sub.3 .multidot. 5Al.sub.2 O.sub.3, Y.sub.2 O.sub.3 .multidot. Al.sub.2 O.sub.3 or 2Y.sub.2 O.sub.3 .multidot. Al.sub.2 O.sub.3 or two-phase mixtures of these single-phase materials.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: June 27, 1978
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Frederic J. Klug
  • Patent number: 4096001
    Abstract: A relatively thin coat of calcium metaborate is electrolytically-applied directly to the surface of a boron-containing electrical steel and a substantially thicker overcoat of Mg(OH).sub.2 is electrolytically-deposited on the calcium metaborate coating to provide a duplex coating about 0.2 mil thick.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: June 20, 1978
    Assignee: General Electric Company
    Inventors: Ronald H. Arendt, Matthew J. Curran
  • Patent number: 4096169
    Abstract: An aromatic carbonate process comprising contacting a phenol, carbon monoxide in the presence of a base, Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum having an oxidation state greater than zero. The resulting aromatic mono- and polycarbonates are useful in the preparation of polycarbonates or as polycarbonates, per se, respectively, which can be molded or formed into films, sheets, fibers, laminates or reinforced plastics by conventional techniques.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: June 20, 1978
    Assignee: General Electric Company
    Inventor: Alan J. Chalk
  • Patent number: 4096168
    Abstract: An aromatic carbonate process comprising contacting a phenol, carbon monoxide, a base, a Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum having an oxidation state of plus one. The resulting aromatic mono- and polycarbonates are useful in the preparation of polycarbonates or as polycarbonates, per se, respectively, which can be molded or formed into films, sheets, fibers, laminates or reinforced plastics by conventional techniques.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: June 20, 1978
    Assignee: General Electric Company
    Inventor: John E. Hallgren
  • Patent number: 4093687
    Abstract: A dense polycrystalline silicon nitride body is produced by hot-pressing a particulate mixture of silicon nitride and a magnesium silicide additive.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: June 6, 1978
    Assignee: General Electric Company
    Inventors: Charles D. Greskovich, Chester R. O'Clair
  • Patent number: 4092297
    Abstract: Polythioetherimides are provided by either effecting reaction between aromatic bis(thioetheranhydride) and organic diamine or by nitro- or halo-displacement from appropriately substituted bis(phthalimide) with anhydrous alkai metal sulfide. The polythioetherimides are heat and flame resistant and can be reinforced with various fillers to produce high performance composites. The polythioetherimides also can be used as wire coating enamels when used in phenolic solvent.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: May 30, 1978
    Assignee: General Electric Company
    Inventor: Frank J. Williams, III
  • Patent number: 4092300
    Abstract: A method is provided for converting a polyimide to the corresponding polyamide acid salt, utilizing a predetermined amount of a strong base. The polyamide acid salt can be converted to the corresponding polyamide acid. The polyamide acid and polyamide acid salts provided by the subject method can be converted to the polyimide state after being applied to various substrates by standard dipcoating and electrocoating techniques. When utilized with a potentiometric titrator, the method of the invention also can be used to determine imide functionality of polyimide.
    Type: Grant
    Filed: May 2, 1975
    Date of Patent: May 30, 1978
    Assignee: General Electric Company
    Inventor: Edith M. Boldebuck
  • Patent number: 4091257
    Abstract: Deep diodes which extend in straight lines through a silicon wafer are produced by migrating aluminum droplets through the wafer while maintaining a finite temperature gradient through the wafer in the direction of straight line droplet travel, and at the same time maintaining a zero temperature gradient through the wafer in a direction normal to the droplet travel course. Unidirectional heat flow apparatus implementing this method is also disclosed.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: May 23, 1978
    Assignee: General Electric Company
    Inventors: Thomas R. Anthony, Harvey E. Cline