Patents Examined by Michael F. Esposito
  • Patent number: 4263341
    Abstract: Printed circuits, and techniques and materials for making printed circuits by prior-known metal-spraying techniques, particularly for making two-sided boards with metal through-hole connects. Preferably, a primer coating (40) of a metal such as zinc is sprayed onto one surface of the substrate, through a chrome-plated metal stencil (30), after which a conductive coating (13 or 16), such as copper or nickel, is sprayed onto the zinc coating to form the conductive patterns. Through hole connections (20) are fabricated by forming tapered holes (50), and placing a removable stop member (51) against the narrow end of the hole before spraying the patterns. The first pattern (16) is then sprayed on from the wide end of the hole (50) so that a portion (52) of the material coats the walls of the hole and forms a bridging strip (53) across the narrow end of the hole.
    Type: Grant
    Filed: December 19, 1978
    Date of Patent: April 21, 1981
    Assignee: Western Electric Company, Inc.
    Inventor: Gerald J. Martyniak
  • Patent number: 4251569
    Abstract: An arc discharge lamp electrode is coated by applying thereto a suspension of alkaline earth compounds in a liquid vehicle of lignosulfonic acid, ammonia and ethylene glycol.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: February 17, 1981
    Assignee: GTE Products Corporation
    Inventors: Eric L. Mager, Willy P. Schreurs
  • Patent number: 4238803
    Abstract: A thin film is formed on a substrate, which film is made of a substantially amorphous chalcogenide having a composition of As.sub.x .multidot.Te.sub.y .multidot.Se.sub.z .multidot.G.sub.g, where G represents at least an element selected from a group consisting of S, In, Tl, Sn, Pb and Ge, and where 10 at %.ltoreq.x.ltoreq.25 at %, 50 at %.ltoreq.y.ltoreq.88 at %, 0 at %.ltoreq.z.ltoreq.40 at % and 0 at %.ltoreq.g.ltoreq.10 at %, and that x+y+z+g=100 and z+g.noteq.0. A laser beam is projected onto the thin film to form in it recesses representing information carried by the laser beam. The information recorded in the thin film exhibits a high signal-to-noise ratio and a high .gamma. characteristic. Besides, the recorded information is scarcely subjected to deterioration independently from time elapse.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: December 9, 1980
    Assignee: Hitachi, Ltd.
    Inventors: Motoyasu Terao, Seiji Yonezawa
  • Patent number: 4229495
    Abstract: A primer coating composition comprising (1) a mixture of more than 50% by weight of aluminum powder and less than 50% by weight of zinc powder, and (2) at least one C.sub.1-4 -alkyl silicate, the weight ratio of (1) to (2) being 60:40 to 95:5. The composition is employed in a coating method which comprises applying a primer dispersion to the surface of a substrate to be coated. The primer disbersion is a dispersion of a mixture of more than 50% by weight of aluminum powder and less than 50% by weight of zinc powder in a solution of at least one organic solvent-soluble C.sub.1-4 -alkyl silicate in an organic solvent. The weight ratio of the metal powder to the alkyl silicate is as indicated. The coating is baked and a finishing powder paint is coated on the resulting primer. The finished coating is then baked.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: October 21, 1980
    Assignee: Seikisui Kagaku Kogyo Kabushiki Ltd.
    Inventors: Minoru Takahashi, Osamu Ishii, Masanori Naito, Yoshinobu Kusuhara, Naofumi Imahigashi
  • Patent number: 4222802
    Abstract: Electric machine windings produced by wrapping a composite insulating material around an electrical conductor, said composite insulating material having been prepared by bonding two or more insulating materials with a silicone resin containing hydroxyl groups in the molecular structure, impregnating said composite insulating material with an insulating varnish comprising 1 equivalent of a polyfunctional epoxy compound and 2.5 to 25 equivalents of a polyfunctional isocyanate compound and curing said varnish, have excellent insulation properties under high temperatures and high humidity and thermal resistance of class H or more.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: September 16, 1980
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Sakai, Toshikazu Narahara, Toru Koyama, Shinichi Toyoda, Kazuo Goto
  • Patent number: 4221834
    Abstract: A relatively thin superconductive magnetic shield, as of lead, is supported from a hollow support structure, as of aluminum or fiberglass by means of a multiplicity of spots of adhesive, as of epoxy, serving to bond the superconducting shield to the support structure. The shield and support structure is then positioned within a reentrant cryostat and cooled to liquid helium temperature to render the shield superconductive. Adjacent edges of the shield material are outwardly flanged and sealed together at the flanged portions, as by welding. The spot pattern of adhesive permits the shield to flex during thermal cycling to relieve strain and prevent fracture thereof while at the same time supporting the shield in a substantially nonmicrophonic manner.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: September 9, 1980
    Assignee: Develco, Inc.
    Inventors: James E. Opfer, John M. Pierce, Lawrence E. Valby
  • Patent number: 4220675
    Abstract: A method of metallic finishing which comprises the steps of: applying a thermosetting liquid coating material to a substrate, further applying thereon a transparent thermosetting powder coating material, and baking both coated films to cure them simultaneously. The above liquid coating material contains a film forming component of thermosetting resin and a pigment to give metallic appearance and the thermosetting resin component contains a cross liking agent of melamine formaldehyde resin which is modified with a monohydroxyl compound having a boiling point in the range of 150.degree. to 250.degree. C. at 1 atm. The obtained coating film is free from the defects of cratering, pinholing, and the like and has quite excellent appearance such as metallic effect and high gloss.
    Type: Grant
    Filed: May 26, 1978
    Date of Patent: September 2, 1980
    Assignee: Kansai Paint Co., Ltd.
    Inventor: Yoshio Imazaki
  • Patent number: 4219605
    Abstract: The invention relates to a process for flameproofing organic synthetic fibre material, wherein (a) a flameproofing agent which contains at least one bromine-containing, aromatic, aliphatic or cycloaliphatic compound and (b) a stabilizer which contains at least one organo-tin compound of tetravalent tin are applied to the fibre material and the fibre material treated in this way is subjected to a heat treatment.The process according to the invention can be carried out as a single-stage or two-stage process and yields flame-resistant fiber finishes stabilized to light and heat.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: August 26, 1980
    Assignee: CIBA-GEIGY Corporation
    Inventor: Peter Rohringer
  • Patent number: 4218283
    Abstract: A semiconductor device fabricated by forming a layer of cured polyimide resin on a semiconductor body, forming a photoresist layer having a prescribed pattern on said cured layer, immersing in an etchant consisting of hydrazine and ethylenediamine to said cured layer through said prescribed pattern, whereby said cured layer is precisely etched according to said prescribed pattern and prescribed surfaces of said semiconductor body are exposed, forming a metal layer on the surface of said polyimide and the prescribed surfaces of said body, and selectively etching said metal layer so as to form a prescribed pattern.
    Type: Grant
    Filed: July 12, 1978
    Date of Patent: August 19, 1980
    Assignee: Hitachi, Ltd.
    Inventors: Atsushi Saiki, Toshio Okubo, Seiki Harada
  • Patent number: 4218495
    Abstract: A Schottky barrier type solid-state element and a method of producing the same, the Schottky barrier type solid-state element comprising a Schottky barrier type element portion consisting of a metallic board and a semiconductor film layer provided on the metallic board, the metallic board being formed of such a metal as can form a Schottky barrier between itself and the semiconductor film layer, and a semiconductor-side terminal electrode provided on the external surface of the semiconductor film layer so as to obtain an ohmic contact therewith, wherein at least the semiconductor film layer is formed by what is called the ionized-cluster-beam deposition process.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: August 19, 1980
    Assignee: Futaba Denshi Kogyo K.K.
    Inventors: Toshinori Takagi, Kiyoshi Morimoto, Yukihiko Utamura
  • Patent number: 4217388
    Abstract: A thin, pressure-sensitive, ink-releasing transfer element such as a ribbon capable of releasing a substantially uniform and intense amount of smudge-resistant ink at least about four times from overlapping impressed areas of the ink layer corresponding to each double image width during high speed printing use on "hammer-impression" high speed typewriters. The thinness of the ribbon is important not only to accommodate a maximum amount of ribbon on the feed spool, but primarily in order to provide a ribbon which is operative in such typewriters to produce images having excellent sharpness, uniform intensity, edge profile and freedom from pick-over, which properties also result from the cooperative nature of the ink and undercoating used on such ribbons.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: August 12, 1980
    Assignee: Columbia Ribbon and Carbon Mfg. Co., Inc.
    Inventors: Michael A. Scott, Albert E. Brown, Edward Young
  • Patent number: 4217395
    Abstract: A carboxylated polymer latex containing a minor amount by weight of a heat sensitizer sufficient to gel the polymer and which also can contain fillers, wetting agents and stabilizers can be used to provide a water resistant film on the surface of a hot rubber compound or composition which subsequently can be cooled rapidly with water and dried. The resulting latex coated rubber can then be stacked or assembled without sticking.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: August 12, 1980
    Assignee: The General Tile & Rubber Company
    Inventors: Tiong Ho Kuan, John G. Sommer
  • Patent number: 4217394
    Abstract: There are disclosed mold-release compositions suitable for lubricating metal molds which are used in molding natural and synthetic rubber and other polymers. The mold release agents of the invention are oxidation-stable homopolymer and copolymer, i.e., block or heteric polyoxyalkylene lubricant compounds. The lubricants of the invention can be used alone or in mixtures with prior art polyoxyalkylene lubricant compounds. The polyoxyalkylene mold release lubricants of the invention have the formula: ##STR1## R is individually selected from alkyl groups of 1 to about 21 carbon atoms, preferably about 7 to about 21 carbon atoms, and most preferably about 12 to about 18 carbon atoms. In lubricants I and III, R.sub.1 and R.sub.2 are the residue of the same or different and in lubricant II different alkylene units, all individually selected from the group consisting of the residue of ethylene oxide, propylene oxide, butylene oxide and an aromatic glycidyl ether, R.sub.3 is the residue of a difunctional phenol, R.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: August 12, 1980
    Assignee: BASF Wyandotte Corporation
    Inventors: David D. Newkirk, Robert B. Login, Basil Thir
  • Patent number: 4216282
    Abstract: A process for reproducing graphic information wherein a magnetic image is formed in a premagnetized layer of acicular chromium dioxide by heating the chromium dioxide selectively to above its Curie point. Ferromagnetic toner particles are then applied uniformly to the chromium dioxide layer, so as to adhere only in the magnetized areas. The toner particles are electrostatically transferred to a substrate and fused into position. Alternating current coronas or other static neutralizing devices are used to neutralize unwanted charges on toner particles which would otherwise cause fuzzy images and unwanted background markings on the final copies.
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: August 5, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Donald W. Edwards, Emery J. Gorondy, Arend Van Roggen
  • Patent number: 4216247
    Abstract: The present invention discloses a method of manufacturing positive electrodes for nonaqueous cells in which manganese dioxide is used as positive active material and light metals such as lithium, sodium or aluminium are used as negative active material, said method comprising the steps of adding to manganese dioxide active material powder, a binder and a viscous agent solution decomposable at temperatures lower than the melting point of the binder, thereby to form paste, applying such paste to the supporting member, and heat-treating this paste-applied supporting member firstly at the decomposition temperature of the viscous agent in an oxidization atmosphere, and secondly at the melting point of the binder under vacuum or in an inert atmosphere, whereby a decrease in the discharge capacity during the manufacture is restrained, to improve the cell performance.
    Type: Grant
    Filed: September 6, 1978
    Date of Patent: August 5, 1980
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hironosuke Ikeda, Mitsunori Hara, Satoshi Narukawa, Hiroji Maeda
  • Patent number: 4216262
    Abstract: The compound 4,4,4-trichloro-1,2-epoxy butane is utilized as a coupling agent for carbon fibers and resin matrix material in the production of carbon fiber reinforced composites to enhance the bonding characteristics of the fiber and resin while improving the flexural strength of the final composite structure.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: August 5, 1980
    Assignee: Great Lakes Carbon Corporation
    Inventor: John C. Goan
  • Patent number: 4216246
    Abstract: A method of improving adhesion between the surface of a substrate and a metal deposit electrolessly plated thereon by forming a novel adhesive material layer comprising (A) a rubber material and (B) a thermosetting resin which is present in a proportion defined by the formula 20.ltoreq.(B)/(A)+(B).ltoreq.85 volume %. In the adhesive layer the thermosetting resin is dispersed, in the form of substantially spherical particles of 0.5 to 15.mu., in the continuous phase of the rubber material. The method is useful for producing printed circuit boards having a high precision and high accuracy pattern circuit. Further, the method is extremely advantageous when it is applied to the so-called photo-forming process since disappearance of the catalyst nuclei on the circuit pattern image can be eliminated.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: August 5, 1980
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Yorio Iwasaki, Toshiro Okamura, Akishi Nakaso, Nobuo Uozu, Hiroshi Takahashi
  • Patent number: 4214971
    Abstract: A method to produce an electrode by coating at least a portion of a valve metal substrate sequentially with first and second liquid solutions containing different proportions of dissolved ruthenium and valve metal values; the second solution having a greater valve metal to ruthenium weight ratio than the first solution. At least a portion of the substrate is contacted with a first liquid solution containing from about 0.25 to about 50 milligrams per milliliter ruthenium, and the valve metal in an amount of from about 0.06 to about 50 milligrams per milliliter, of the solution. The weight ratio of the valve metal to ruthenium in the first solution is from about 1:4 to about 2:1. The so-contacted surface is heated to oxidize the deposited ruthenium and valve metal values. Thereafter at least the oxidized surface is contacted with a second solution containing dissolved valve metal and ruthenium values in a weight ratio of from about 20:1 to about 2:1 and heated to oxidize the deposited metal values.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: July 29, 1980
    Assignee: The Dow Chemical Company
    Inventors: Henrik R. Heikel, James J. Leddy
  • Patent number: 4215155
    Abstract: A method of preparing polycrystalline photoactive semiconductor electrodes utilizable in photoassisted oxidation reactions comprises the steps of (1) providing a suspension of finely divided mixture of titanium dioxide and at least one oxide of a metal selected from the group consisting of aluminum and the d-electron transition metals other than titanium, (2) applying the suspension to the surface of a metal body, (3) sintering the applied coating to the metal body.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: July 29, 1980
    Assignee: GTE Laboratories Incorporated
    Inventors: Howard McKinzie, Elizabeth A. Trickett
  • Patent number: 4215157
    Abstract: Disclosed is a solution including an aromatic bis (ether dicarboxylic acid) component, an organic diamine component and a solvent system including a water-soluble organic solvent component, which may be a dipolar aprotic solvent or a monoalkyl ether of ethylene glycol or of diethylene glycol, and optionally water. The solution may be coated on a substrate and polymerized to form high quality polyetherimide coatings.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: July 29, 1980
    Assignee: General Electric Company
    Inventors: Edith M. Boldebuck, Eugene G. Banucci