Patents Represented by Attorney Joseph T. Cohen
  • Patent number: 4232360
    Abstract: Composite high intensity discharge lamp constructions are described adapted for use in the recovery, in the form of heat, of energy in the non-visible frequencies emitted by such lamps. A transparent sleeve is disposed around and spaced from the lamp body being directly or indirectly connected thereto. Air passing between the sleeve and the lamp is brought into intimate heat transfer contact with both the outer surface of the lamp outer envelope and the inner surface of the sleeve.
    Type: Grant
    Filed: January 11, 1978
    Date of Patent: November 4, 1980
    Assignee: General Electric Company
    Inventors: Himanshu B. Vakil, Seth D. Silverstein
  • Patent number: 4228308
    Abstract: 1,1,1-trichloro-2,2-bis(4-hydroxyphenyl)ethane can be dehydrohalogenated to 1,1-dichloro-2,2-bis(4-hydroxyphenyl) ethylene by treating the former with a dehydrochlorinating agent comprising liquid methyl amine and an effective amount of an additive to accelerate the dehydrochlorinating effect of the liquid methyl amine selected from the class consisting of a certain class of inorganic and organic salts.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: October 14, 1980
    Assignee: General Electric Company
    Inventor: Michael R. Mac Laury
  • Patent number: 4226951
    Abstract: Linear, branched and/or cross-linked block polymers of polyphenylene oxides and polystyrene are described. The polyphenylene oxide-polystyrene block polymers can be molded, calendered, or extruded as films, sheets, fibers, laminates or other useful articles of manufacture.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: October 7, 1980
    Assignee: General Electric Company
    Inventor: Dwain M. White
  • Patent number: 4225687
    Abstract: This invention is concerned with a new class of halobisphenolethylene polycarbonate-polyetheramide-imide blends. More particularly, the invention is concerned with halobisphenolethylene polycarbonate-polyetheramide-imide blends which exhibit enhanced physical and/or chemical properties. The halobisphenolethylene polycarbonate-polyetheramide-imide blends are suitable for the manufacture of filaments, fibers, films, sheets, laminates and articles of manufacture including reinforced articles by conventional manufacturing techniques.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: September 30, 1980
    Assignee: General Electric Company
    Inventor: Pablo D. deTorres
  • Patent number: 4221920
    Abstract: An aromatic salicylate process comprising contacting a phenol, carbon monoxide, a base, a Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum and recovering at least a portion of an aromatic salicylate. The resulting aromatic salicylates are useful in plastics and lacquers as well as in pharmaceuticals.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: September 9, 1980
    Assignee: General Electric Company
    Inventor: John E. Hallgren
  • Patent number: 4208600
    Abstract: A high power density acyclic machine is described which comprises a plurality of high current density field coils, a series drum and disk arrangement using liquid metal collectors, and shielding members as armature conductor material. The machine achieves maximum flux utilization by providing a plurality of disks connected in series and intersecting the magnetic flux of the field coils, and a drum connected in series between sets of disks also intersecting the flux from the field coils.
    Type: Grant
    Filed: April 21, 1978
    Date of Patent: June 17, 1980
    Assignee: General Electric Company
    Inventor: Burton D. Hatch
  • Patent number: 4199651
    Abstract: This invention is concerned with a new class of polyetheramide-imide phenolic resin blends. More particularly, the invention is concerned with polyetheramide-imide phenolic resin blends which exhibit melt viscosities suitable for solventless-dry powder coating and curing of polyetherimide insulating films on various substrates. The polyetheramide-imide phenolic resin blends are also suitable for the manufacture of filaments, fibers, films, molding compounds, coatings, etc.
    Type: Grant
    Filed: November 3, 1975
    Date of Patent: April 22, 1980
    Assignee: General Electric Company
    Inventors: Eugene G. Banucci, Edith M. Boldebuck
  • Patent number: 4197394
    Abstract: A method is provided for making cyclic carbonates of 2,2-bis(4-hydroxyphenyl)-1,1-dichloroethylene, such as the cyclic trimer, by effecting the polymerization of the aforementioned bis (4-hydroxyphenyl)dichloroethylene to a linear polycarbonate, and then agitating a solution of the resulting polycarbonate in the presence of a tertiary ogranic amine. The cyclic carbonates made by the aforementioned process are useful as flame retardants in polycarbonates.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: April 8, 1980
    Assignee: General Electric Company
    Inventor: John E. Hallgren
  • Patent number: 4193799
    Abstract: Curable compositions are provided based on the use of an aromatic onium salt with a blend of epoxy resin and polyvinyl acetal resin. The curable compositions in the form of a cast film can be used directly as a dry film photoresist by being applied to a substrte, such as a copper clad laminate, and cured with ultraviolet light.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: March 18, 1980
    Assignee: General Electric Company
    Inventor: James V. Crivello
  • Patent number: 4193866
    Abstract: A method for removal of insoluble suspended impurities from polluted liquids by adding thereto a magnetic ferrite powder suspendible therein and a polyethyleneimine flocculant which flocculates suspended solid impurities and the magnetic powder producing a dense flocculated mixture.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: March 18, 1980
    Assignee: General Electric Company
    Inventors: George M. J. Slusarczuk, Ronald E. Brooks
  • Patent number: 4192957
    Abstract: The action of liquid ammonia in dehydrohalogenating 1,1,1-trichloro-2,2-bis(4-hydroxyphenyl)ethane to 1,1-dichloro-2,2-bis(4-hydroxyphenyl)ethylene by liquid ammonia can be accelerated by incorporating in the liquid ammonia an effective amount of a certain class of alkyl amine hydrohalides.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: March 11, 1980
    Assignee: General Electric Company
    Inventor: Michael R. MacLaury
  • Patent number: 4192842
    Abstract: An improved method is described for solvent casting ultrathin non-porous methylpentene polymer films. The casting solution comprises methylpentene polymer or a mixture thereof with organopolysiloxane-polycarbonate copolymer dissolved in a solvent system and is characterized by being able to spontaneously spread over the surface of the liquid casting substrate. In a preferred embodiment, large-area films less than 200 Angstroms in thickness may be repeatedly formed. The solidified films remain relatively free of tensile stress during formation. The casting solution is deposited in a narrow, longitudinally-extending defined region at the surface of the casting substrate. The surface area and perimeter of the defined region are enlarged over the surface of the casting substrate in a manner whereby the casting solution is moved relative to the casting substrate and, after desolvation, the polymer film formed remains stationary relative to the casting substrate and relatively free of tensile stress.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: March 11, 1980
    Assignee: General Electric Company
    Inventors: Shiro G. Kimura, Raymond G. Lavigne, Warella R. Browall
  • Patent number: 4192924
    Abstract: Curable organic resin compositions, such as epoxy resins, are provided, based on the use of a diaryliodonium salt-redox catalyst curing system. The curable compositions can provide flexible or rigid organic resin foam when used with a volatile organic solvent as a result of exothermic heat of cure.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: March 11, 1980
    Assignee: General Electric Company
    Inventor: James V. Crivello
  • Patent number: 4192956
    Abstract: The action of liquid ammonia in dehydrohalogenating 1,1,1-trichloro-2,2-bis(4-hydroxyphenyl)ethane to 1,1-dichloro-2,2-bis(4-hydroxyphenyl)ethylene by liquid ammonia can be accelerated by incorporating in the liquid ammonia an effective amount of a certain class of inorganic salts.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: March 11, 1980
    Assignee: General Electric Company
    Inventor: Michael R. MacLaury
  • Patent number: 4191721
    Abstract: A method for increasing the porosity and crushability characteristics thereof embodies the firing of a ceramic compact comprising a reactant fugitive filler material and a ceramic material in a controlled atmosphere.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: March 4, 1980
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug, Svante Prochazka
  • Patent number: 4191535
    Abstract: An improved extrusion apparatus and process are described for the preparation of a rod-like body from a coal-containing particulate mixture. Improvements are disclosed for depositing lubricant directly onto the outer surface of the forming body as it is passed into a die received over a discharge portion of the extruder barrel. Reductions in requisite power input to the extruder are thereby effectuated.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: March 4, 1980
    Assignee: General Electric Company
    Inventor: Anthony H. Furman
  • Patent number: 4191602
    Abstract: A high power field effect transistor having a buried grid is fabricated by epitaxially growing from the liquid phase, on a lightly doped silicon substrate, a silicon layer heavily doped with the same conductivity type determining impurities. The substrate is thinned, and a grid region heavily doped with opposite conductivity type determining impurities is diffused into the substrate. An upper layer lightly doped with the same conductivity type determining impurities as those in the substrate is then grown epitaxially from the liquid phase atop the grid region, followed by diffusion of the same conductivity type determining impurities into the upper layer. The resulting structure exhibits relatively large source-to-drain conduction area in the grid region.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: March 4, 1980
    Assignee: General Electric Company
    Inventor: Bantval J. Baliga
  • Patent number: 4191720
    Abstract: A method for simultaneously forming an integral barrier layer on selected external surfaces of a fired ceramic article and for increasing the porosity content and crushability characterstics thereof embodies the firing of a ceramic compact comprising a reactant fugitive filler material and a ceramic material in a controlled atmosphere.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: March 4, 1980
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug
  • Patent number: 4191739
    Abstract: In a mixture of two antibody-coated latex particle suspensions, the particles in each suspension being of a different size, respectively, absence of antigen specific to the antibody in the mixture leaves multiplets only of one and the other sizes of particles. Presence of antigen in the mixture results in large particle/small particle coupling, which is detected by the resistive pulse method and indicates that an antigen-antibody reaction has occurred.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: March 4, 1980
    Assignee: General Electric Company
    Inventors: Egidijus E. Uzgiris, Ralph W. De Blois
  • Patent number: 4190825
    Abstract: An analog-to-digital converter is described in which a sequence of samples of an analog signal is converted into a sequence of binary numbers which appear at the output terminals of a composite counter comprising a first counter and a second counter. The first and second counters are gated in sequence by gating waveforms to provide for each sample the count corresponding to the logarithm of the sample. The gating waveforms are derived from a charge and discharge cycle of a capacitor to which the sample is supplied. Selected times in the charging and discharging portions of the cycle are utilized for deriving the gating waveforms.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: February 26, 1980
    Assignee: General Electric Company
    Inventors: Robert P. DePuy, Arthur H. Leitten, Jr.