Patents Examined by Darlene David
-
Patent number: 6001494Abstract: Metal-ceramic composite coatings provide refractory anti-corrosion flexible enamel coated products. Frit is made of silicon dioxide, sodium or potassium oxide, boron oxide, calcium oxide and zinc oxide, with possible other components. The frit is wet milled with clay and bentonite as a suspending agent, magnesium carbonate and sodium nitrates as electrolyte, boric acid a buffer, and water. Finely divided aluminum is blended after milling. A substrate is coated with the frit aluminum and clay mixture, which is heated and fused. The metal component coats the substrate and provides galvanic protection. The resulting coating is flexible and deforms with the substrate without delaminating or chipping. The coating is prepared by crushing, sieving, mixing and melting the frit components. The melt is tested by pulling, cooling and feeling a thread. The melt is fritted by pouring into water. The frit is dried, ground and sieved, and then wet milled with water, clay, bentonite and pH adjustors.Type: GrantFiled: February 18, 1997Date of Patent: December 14, 1999Assignee: Technology Partners Inc.Inventors: Frank A. Kuchinski, John E. Peeling
-
Patent number: 5993953Abstract: A laminated paper, including a water soluble polyvinyl alcohol layer of 15-40 .mu.m thickness having an air permeability of 800,000 seconds/100 ml or higher, a total thickness of 40-100 .mu.m and a lengthwise softness of 50 g or less. The laminated paper has high air permeability, extremely superior in air tightness, water soluble, and easy to dispose and recycle. Furthermore, there is no static electricity generated, it is strong in heat sealing, and it has conversion performance. Plus, in the safety aspect, it is non-toxic, waste is safe, and when cushioning material 10 is formed, disposal process is easy as the water soluble PVA film and the paper base are both biodegradable. This laminated paper is an environment friendly industrial material.Type: GrantFiled: March 28, 1997Date of Patent: November 30, 1999Assignees: Hitachi Electronics Services Co., Ltd., Mishima Paper Co., Ltd.Inventors: Jiro Takahashi, Fumitoshi Ishikawa
-
Patent number: 5989734Abstract: An aluminum product having the metal diffusion layer in the present invention has, on the surface thereof, a metal diffusion layer comprising aluminum and a diffusion metal which is diffused setting aluminum as a matrix and which includes at least one selected from the group consisting of Ni, Cr, Cu, Zn, Mg, Ti and Ag; wherein the diffusion layer is formed by diffusing inclinatorily not less than 1 .mu.m from the surface thereof; and the diffusion metal is not less than 1.0% by weight when the whole of the metal diffusion layer is set to be 100% by weight. Also, in a process for producing an aluminum product having a metal diffusion layer, the surface of the aluminum product is brought into contact with the processing agent including at least the diffusion metal powder; and in this state by conducting heat treatment in the atmosphere including nitrogen, the diffusion metal is diffused on the surface of the aluminum product and the metal diffusion layer is formed.Type: GrantFiled: September 22, 1997Date of Patent: November 23, 1999Assignees: Toyota Jidosha Kabushiki Kaisha, Toyo Aluminum Kabushiki KaishaInventors: Hirohisa Miura, Nagayoshi Matsubara, Yasuhiro Yamada, Haruzo Katoh, Takashi Watsuji
-
Patent number: 5981089Abstract: A ferrous alloy is formed with a Fe--Cr stainless steel having a Vickers hardness of 400 or more as a substrate and a Fe--Al diffusion layer having a thickness of 2 to 50 .mu.m. The diffusion layer contains at least 90 vol % of an intermetallic compound of Al and Fe relative to a total volume of the diffusion layer. The Al content included within a depth of at least 2 .mu.m of the diffusion layer is 35 to 65% by weight based upon total weight of a region of the diffusion layer ranging up to the thickness of at least 2 .mu.m. It is preferred to use as the substrate a precipitation-hardening stainless steel comprising 66 to 81.9 wt % of Fe, 15 to 20 wt % of Cr, 3 to 13 wt % of Ni, and one element selected from 3 to 6 wt % of Cu, 0.5 to 2 wt % of Al, and 0.01 to 0.2 wt % of a total of C and N, or a high carbon stainless steel comprising 73 to 89.9 wt % of Fe, 10 to 19 wt % of Cr, 0.1 to 1.2 wt % of C, and less than 3 wt % of Ni.Type: GrantFiled: May 20, 1996Date of Patent: November 9, 1999Assignee: Matsushita Electric Works, Ltd.Inventors: Junji Imai, Tadashi Hamada, Shuji Yamada, Hiroshi Yamada, Fumio Iwane
-
Patent number: 5981090Abstract: The pin for electronic assemblies according to the present invention consists of a core alloy with 0.2 to 1.5 wt. % Ag, the remainder copper, whereby at least the contact surface of the pin is provided with one or several highly conductive and/or easily solderable coatings. With this not only a higher electric conductivity of the contact is obtained but also a comparatively high strength with simple production and good workability, which makes it possible to miniaturize the pins.Type: GrantFiled: August 12, 1998Date of Patent: November 9, 1999Assignee: Berkenhoff GmbHInventor: Bernhard Ott
-
Patent number: 5976712Abstract: A multilayer material is described, whose overlay exhibits improved hardness and improved wear-resistance. The multilayer material includes an overlay, which contains 8-18.5 wt. % tin and 2-16 wt. % copper, the balance being lead, wherein the tin is present as a finely crystalline deposit completely homogeneously distributed in the lead. A process for producing sliding elements in which the overlay of lead-tin-copper is applied to the prefabricated semi-finished product by electroplating provides that a ternary, fluoroborate-free electroplating bath is used without brighteners and with the addition of fatty acid polyglycol ester and a grain refining agent including a carboxylic acid.Type: GrantFiled: June 6, 1997Date of Patent: November 2, 1999Assignee: Federal-Mogul Wiesbaden GmbHInventors: Klaus Staschko, Hans-Ulrich Huhn, Klaus Muller, Joachim Heyer
-
Patent number: 5972526Abstract: A white decorative member comprising: a substrate; a primary plate layer having a thickness of at least 1 .mu.m and covering the substrate, which is composed of Cu (alloy); an Sn--Cu--Pd alloy plate layer having a thickness of at least 0.2 .mu.m and covering the primary plate layer, which comprises 10 to 20% by weight of Sn, 10 to 80% by weight of Cu and 10 to 50% by weight of Pd as essential components; and a finishing plate layer having a thickness of 0.2 to 5 .mu.m, which is composed of at least one element selected from the group consisting of Pd, Rh and Pt. The decorative member of the present invention does not contain any Ni component, so that, when worn, it does not induce Ni allergy. Moreover, the decorative member which may have white, gold, black or multicolor being a combination of the above colors can be produced at lowered cost.Type: GrantFiled: August 4, 1997Date of Patent: October 26, 1999Assignee: Citizen Watch Co., Ltd.Inventors: Yosuke Matsumoto, Yukio Tanokura, Kazumi Hamano
-
Patent number: 5968672Abstract: Upper and lower shell members of aluminum-plated steel panels have respective flanges overlapping each other and welded to each other by a laser beam, thereby forming a fuel tank. One of the flanges has a stepped region spaced from the other of the flanges, thereby defining a gap between the stepped region and the other flange. The laser beam is applied to the flanges closely to the gap for discharging unwanted components such as aluminum from a welded area of the flanges into the gap. Therefore, the amount of aluminum contained in the welded area is reduced to increase the bonding strength of the welded area.Type: GrantFiled: July 27, 1998Date of Patent: October 19, 1999Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroshi Mitsuyoshi, Hiroki Goto, Yasuo Masuda
-
Patent number: 5965274Abstract: An electronic circuit component having improved mechanical properties and thermal conductivity comprises NiAl and/or Ni.sub.3 Al, upon which an alumina layer is formed prior to applying the conductive elements. Additional layers of copper-aluminum alloy or copper further improve mechanical strength and thermal conductivity.Type: GrantFiled: November 13, 1997Date of Patent: October 12, 1999Assignee: Lockheed Martin Energy Research CorporationInventors: Seetharama C. Deevi, Vinod K. Sikka
-
Patent number: 5958605Abstract: A passivating overcoat bilayer is used for multilayer reflective coatings for extreme ultraviolet (EUV) or soft x-ray applications to prevent oxidation and corrosion of the multilayer coating, thereby improving the EUV optical performance. The overcoat bilayer comprises a layer of silicon or beryllium underneath at least one top layer of an elemental or a compound material that resists oxidation and corrosion. Materials for the top layer include carbon, palladium, carbides, borides, nitrides, and oxides. The thicknesses of the two layers that make up the overcoat bilayer are optimized to produce the highest reflectance at the wavelength range of operation. Protective overcoat systems comprising three or more layers are also possible.Type: GrantFiled: November 10, 1997Date of Patent: September 28, 1999Assignee: Regents of the University of CaliforniaInventors: Claude Montcalm, Daniel G. Stearns, Stephen P. Vernon
-
Patent number: 5955190Abstract: The present invention is a photographic paper which includes a paper sheet with a polyolefin resin layer on each surface of the paper sheet. A print retaining antistatic layer having a dry coverage of from 10 mg/m.sup.2 to 10000 mg/m.sup.2 is superposed on one of the free surfaces of the polyolefin layers. The print retaining antistatic layer includes a smectite clay and a film forming polymeric binder having a glass transition temperature (Tg) less than 30.degree. which does not intercalate inside and/or exfoliate the smectite clay. In an alternate embodiment the photographic paper includes a silver halide emulsion layer on the other free surface of the resin coated paper sheet.Type: GrantFiled: September 29, 1997Date of Patent: September 21, 1999Assignee: Eastman Kodak CompanyInventors: Debasis Majumdar, Hans R. Grashof, Robert J. Kress
-
Patent number: 5955207Abstract: The face sheet is formed of a titanium alloy which includes boron that can be superplastically formed and diffusion bonded to form a structural panel. The structural panel generally includes a pair of face sheets that are disposed on and bonded to opposite sides of a metallic core. By forming at least one of the face sheets of a titanium alloy which includes boron, such as between about 0.2 weight percent and about 2 weight percent of boron, the resulting structural panel is stiffened without any corresponding increase in weight relative to structural panels formed of conventional titanium alloys. Preferably, powdered titanium diboride (TiB.sub.2) is added to a titanium alloy charge that is subsequently formed into a boron reinforced titanium alloy sheet. During the forming process, the TiB.sub.2 reacts to produce TiB reinforcements that are scattered throughout the metal matrix to increase the modulus and correspondingly stiffen the resulting face sheet.Type: GrantFiled: November 24, 1997Date of Patent: September 21, 1999Assignee: McDonnell Douglas CorporationInventors: Richard J. Lederich, Raymond J. Tisler
-
Patent number: 5952083Abstract: Anodizable components for electronic packaging applications, such as substrates for printed circuit boards or ball grid array electronic packages, having conductive circuitry formed on an electrically non-conductive anodic film. To inhibit the formation of electrically conductive precipitates in the anodic film that can form an electrical short circuit between the circuit traces and the metallic core of the component, the metallic core is formed from an anodizable alloy having below thresholds of precipitate forming constituents. Such precipitate forming constituents include iron, silicon and manganese.Type: GrantFiled: October 21, 1997Date of Patent: September 14, 1999Assignee: Advanced Technology Interconnect, Inc.Inventors: Arvind Parthasarathi, Satish Jalota, Jeffrey Schlater, Lynn Strauman, Jeffrey S. Braden
-
Patent number: 5932360Abstract: A hollow thin walled shell with integral internal baffles is formed by a multilayer coating process. A series of mandrels is designed to be assembled to form the outer surface of the desired shell. The mandrel surfaces hidden during assembly include the areas intended to form the internal baffles. The mandrels are coated separately, assembled, and the assembly is given a continuous overcoating that holds the assembly together and provides the shell with mechanical integrity. The assembly is machined to remove all internal and external coated surfaces not intended to be included in the shell and the mandrel is dissolved or otherwise removed, leaving the thin coatings as the desired shell with baffles at the areas where the coated mandrel surfaces were hidden during assembly.Type: GrantFiled: June 6, 1997Date of Patent: August 3, 1999Assignee: Servometer CorporationInventors: Paul Hazlitt, Edward Howanice
-
Patent number: 5922477Abstract: Relatively thin (e.g., thickness of less than about 2.5 mm, and typically no greater than about 1.0 mm) plates for synthetic fiber-forming spin packs include a first metal layer exhibiting a relatively slow photochemical etching property and a second metal layer exhibiting a relatively fast photochemical etching property which are adhered (laminated) to one another to form a composite substrate structure. The differential etch rates as between the first and second metal layers permit relatively dimensionally larger distribution channels and relatively dimensionally precise through holes to be formed in the composite substrate. In this regard, the second metal layer permits the formation via photochemical etching of dimensionally deeper and/or wider polymer distribution channels. The first metal layer, on the other hand, allows for the formation of relatively dimensionally precise through holes via concurrent (simultaneous) etching with the second metal layer.Type: GrantFiled: March 25, 1997Date of Patent: July 13, 1999Assignee: BASF CorporationInventors: Matthew B. Hoyt, Charles F. Helms, Jr.