Patents Examined by Josephine Barr
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Patent number: 5174867Abstract: Electrically conductive, finely divided pyrrole polymers are prepared by a process in which a pyrrole is polymerized in the presence of a carrier and are used for the production of shaped articles and coatings.Type: GrantFiled: February 28, 1984Date of Patent: December 29, 1992Inventors: Herbert Naarmann, Walter Heckmann, Gernot Koehler, Petr Simak
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Patent number: 5159040Abstract: This invention relates to electrically conductive and non-conductive forms of poly(heterocyclic vinylenes) and to solutions of same. Another aspect of this invention relates to novel precursor polymers which can be converted into the poly(heterocyclic vinylenes) of this invention.Type: GrantFiled: August 7, 1986Date of Patent: October 27, 1992Assignee: Allied-Signal Inc.Inventors: Kwan-Yue A. Jen, Ronald L. Elsenbaumer, Lawrence W. Shacklette
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Patent number: 5156772Abstract: Materials are disclosed which are used to produce traces on a circuit board by means of extrusion. The materials are polymer thick films (PTF) which are thixotropic. Conductive traces are composed of conductive particles, a resin and hardener, and two solvents, one having a relatively high volatility and one having a relatively low volatility. Thus when a newly deposited trace is subjected to a stream of hot air, the fast solvent will substantially evaporate leaving a firm paste behind over which another layer of PTF can be written without causing interference between the layers. The slow solvent then permits the various layers of traces to be polymerized together at the same time in a one step operation. The insulative material is similar to the conductive material in that it includes a resin and hardener and two solvents of differening volatility. In addition, in the preferred mode, it includes a gelling agent.Type: GrantFiled: May 11, 1988Date of Patent: October 20, 1992Assignee: Ariel Electronics, Inc.Inventors: G. Graham Allan, Kenneth N. Bates, Amar N. Neogi
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Patent number: 5147454Abstract: The invention provides a bath composition for electroless solder plating comprising:(A) about 5 to about 120 g/l of at least one compound selected from the group consisting of alkanesulfonic acids and alkanolsulfonic acids,(B) about 10 to about 100 g/l of at least one compound selected from the group consisting of tin salts of alkanesulfonic acids and tin salts of alkanolsulfonic acids,(C) about 10 to about 100 g/l of at least one compound selected from the group consisting of lead salts of alkanesulfonic acids and lead salts of alkanolsulfonic acids,(D) about 10 to about 200 g/l of at least one compound selected from the group consisting of thiourea and thiourea derivatives, and(E) about 1 to about 250 g/l of at least one compound selected from the group consisting of monocarboxylic acids, dicarboxylic acids, tricarboxylic acids and salts thereof.Type: GrantFiled: January 17, 1990Date of Patent: September 15, 1992Assignee: Okuno Chemical Industries Co., Ltd.Inventors: Yukio Nishihara, Akemi Oharada
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Patent number: 5143649Abstract: A revolutionary new semiconductive material having a sharp rise in electrical resistance at a predetermined maximum temperature with substantially no annealing necessary after extrusion to achieve an essentially constant resistance at room temperature. The PTC composition includes a finely divided conductive material, such as carbon black; a suitable semicrystalline polymer having a molecular weight distribution containing a sufficient number of relatively low molecular weight molecules to substantially eliminate annealing; and a suitable polymeric material providing a sufficient number of polar molecules for electrical conductivity. At least 9% by weight of the polymer molecules should be in the molecular weight range of 1,000 to 30,000, and particularly in the 5,000 to 23,000 range and the entire polymeric portion of the composite composition should have a number average molecular weight of 30,000 or less.Type: GrantFiled: March 2, 1989Date of Patent: September 1, 1992Assignee: Sunbeam CorporationInventors: Brian D. Blackledge, William M. Rowe, Jr.
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Patent number: 5143651Abstract: A composition based on zinc oxide for low and medium voltage varistors which contains additional elements in the form of oxides, where the oxides are contained in the composition in accordance with the following percentages by weight:______________________________________ 2.5 .ltoreq. Sb.sub.2 O.sub.3 .ltoreq. 4.5 0.8 .ltoreq. Co.sub.3 O.sub.4 .ltoreq. 1 0.4 .ltoreq. NiO .ltoreq. 1 0 < Cr.sub.2 O.sub.3 .ltoreq. 0.8 0.6 .ltoreq. Mn.sub.3 O.sub.4 .ltoreq. 0.8 4.2 .ltoreq. Bi.sub.2 O.sub.3 .ltoreq. 4.6 0.05 .ltoreq. PbO .ltoreq. 0.15 0.001 .ltoreq. SiO.sub.2 .ltoreq. 0.005 0.001 .ltoreq. Al.sub.2 O.sub.3 .ltoreq. 0.002 0.04 .ltoreq. B.sub.2 O.sub.3 .ltoreq. 0.Type: GrantFiled: September 7, 1990Date of Patent: September 1, 1992Assignee: Compagnie Europeenne de Composants Electroniques LCCInventor: Jean-Pierre Caffin
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Patent number: 5142045Abstract: Novel polymers containing 6,6,6-tricyclic moieties pendant from the polymer backbone, their novel monomers, and novel conductive polymers formed by doping the novel polymers with an electron acceptor compound. The novel polymers are easily synthesized, are soluble in various solvents, and are more stable than conductive polymers having the tricyclics as repeating units in the polymer backbone. A preferred tricyclic is phenothiazine.Type: GrantFiled: May 27, 1988Date of Patent: August 25, 1992Assignees: Aisin Seiki Kabushiki Kaisha, The Regents of the University of MichiganInventors: Robert Zand, Shinji Nezu, Selim Kusefoglu
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Patent number: 5139703Abstract: This invention relates to electrically conductive and non-conductive forms of poly(heterocyclic vinylenes) and to solutions of same. Another aspect of this invention relates to novel precursor polymers which can be converted into the poly(heterocyclic vinylenes) of this invention.Type: GrantFiled: May 21, 1990Date of Patent: August 18, 1992Assignee: Allied-Signal Inc.Inventors: Kwan-Yue A. Jen, Ronald L. Elsenbaumer, Lawrence W. Shacklette
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Patent number: 5137982Abstract: A method for removing odor from an aqueous solution of polymeric quaternary ammonium salt solution containing residual aliphatic tertiary amine and choline chloride or derivative thereof, said process comprising adding a sufficient amount of a non-volatile, stable, polybasic acid to react with said choline chloride or derivative thereof to prevent the formation of aliphatic tertiary amine from said choline chloride or derivative thereof. The present invention is also directed to a process for the preparation of recording film by treating as ethylene oxide neutralized conductive quaternary polymer solution with orthophosphoric acid and coating the treated solution directly onto a substrate.Type: GrantFiled: January 30, 1991Date of Patent: August 11, 1992Assignee: Graphics Technology International Inc.Inventor: Everett W. Bennett
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Patent number: 5132051Abstract: This invention provides III-V semiconductor/glass and III-V semiconductor/glass/polymer articles of manufacture which are useful for generating third order nonlinear optical effects.Type: GrantFiled: February 24, 1989Date of Patent: July 21, 1992Assignee: E. I. du Pont de Nemours and CompanyInventors: Norman Herron, Ying Wang
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Patent number: 5126075Abstract: Material for a housing of electronic components, a compound of synthetic resin, which contains ferrite powder and carbon fiber, is bestowed with original properties of the synthetic resin, such as lightness and freedom of molding, high permeability brought by ferrite powder, and high conductivity and mechanical properties by a designated carbon fiber. The material is made into a light housing with various shapes by injection molding or vacuum molding. The housing concentrates on its surface magnetic flux from external low-frequency field and shields the electronic components from electromagnetic wave noise and low-frequency magnetic field, preventing electromagnetic troubles of the electronic components.Type: GrantFiled: October 27, 1989Date of Patent: June 30, 1992Assignee: Kitogawa Industries Co., Ltd.Inventor: Asaharu Nakagawa
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Patent number: 5124076Abstract: Adhesive precursor compositions comprising an N-vinyl lactam monomer and an acrylic monomer mixed together in a ratio of between 10:1 to 1:10 can be polymerized rapidly and efficiently in situ in less than 30 seconds, and preferably less than 10 seconds, upon exposure to UV light. The electrically conductive hydrogel compositions consist essentially of the polymerizable monomers, water, a cross-linking agent, an ionizable salt, and a photoinitiator.Type: GrantFiled: January 19, 1990Date of Patent: June 23, 1992Assignee: Contour Electrodes, Inc.Inventor: Jack H. Smuckler
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Patent number: 5122303Abstract: Ion-conducting compositions containing(A) a polyester/polyether copolymer prepared from(1.1) an .alpha.,.omega.-dihydroxy-terminated poly(oxyalkylene),(1.2) an aromatic dicarboxylic acid or ester-forming derivatives thereof and(1.3) an aromatic diol or an aromatic hydroxycarboxylic acid or ester-forming derivatives thereof or a mixture of these compounds, or prepared from(2.1) an .alpha., .omega.-dicarboxy-terminated poly(oxyalkylene) or ester-forming derivatives thereof,(2.2) an aromatic diol and(2.3) an aromatic dicarboxylic acid, an aromatic hydroxycarboxylic acid or ester-forming derivatives thereof or a mixture of these compounds, and(B) a salt of a monovalent to trivalent metal ion of groups Ia to IVa, Ib to VIIb or VIII, are particularly suitable for the production of antistatic films or coatings having an antistatic action or as solid electrolytes for batteries. Some of the polyester/polyether copolymers (A) are novel and the novel copolymers are also claimed.Type: GrantFiled: November 28, 1989Date of Patent: June 16, 1992Assignee: Ciba-Geigy CorporationInventor: Bernd Tieke
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Patent number: 5120472Abstract: A polymer composition which is superior in processability, exhibits an extremely superior electroconductive characteristic when doped using an electron acceptor, and which comprises.(A) a copolymer represented by the following general formula (I): ##STR1## wherein R.sup.1 is a hydrogen atom or a hydrocarbon residue having 1 to 20 carbon atoms, R.sup.2 is a hydrogen atom, a hydrocarbon residue having 1 to 20 carbon atoms, furyl, pyridyl, nitrophenyl, chlorophenyl, or methoxyphenyl, n and x are each an integer not smaller than 2; and(B) one or more compounds selected from the group consisting of: polypyrrole compounds represented by the following general formula (II): ##STR2## wherein R.sup.3, R.sup.4 and R.sup.5 are each a hydrogen atom or a hydrocarbon residue having 1 to 20 carbon atoms, and p is an integer not smaller than 2; polythiophene compounds represented by the following general formula (III): ##STR3## wherein R.sup.6 and R.sup.Type: GrantFiled: June 1, 1989Date of Patent: June 9, 1992Assignee: Nippon Oil CompanyInventors: Yutaka Shikatani, Seiichi Akita, Nobuyuki Kuroda, Kazuo Matsuura
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Patent number: 5120473Abstract: A metallizing composition for use with ceramics which comprises 100 parts by weight of a CuO-Cu combination consisting of 30 to 70 wt % CuO and 70 to 30 wt % Cu, at least one inorganic component selected from the group consisting of not more than 10 parts by weight of MnO.sub.2, not more than 7 parts by weight of Pt and not more than 5 parts by weight of Au, an organic binder, and a solvent.Type: GrantFiled: October 12, 1988Date of Patent: June 9, 1992Assignee: NGK Spark Plug Co., Ltd.Inventors: Kazuo Kondo, Asao Morikawa
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Patent number: 5118445Abstract: A conductive high polymer composite, which is composed of polyalkylether and aromatic poly-heterocycles, the composite having higher mechanical strength, pliability and excellent working properties, and may be used in storage battery, electrochromic display devices, photocell or the other semiconductor articles. The composite may be prepared by a chemical or electrochemical method.Type: GrantFiled: November 9, 1989Date of Patent: June 2, 1992Assignee: Korea Research Institute of Chemical TechnologyInventors: Suh B. Rhee, Myong H. Lee, Yong K. Kang
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Patent number: 5116540Abstract: Peroxide-provided free-radical molecular weight distribution narrowing of polypropylenes in the compounding stage of making conductive polypropylenes yields carbon black filled polypropylenes with improved rheological properties, surface conductivity, appearance, and surface characteristics with mechanical and physical properties similar to prior conductive polypropylenes.Type: GrantFiled: March 3, 1989Date of Patent: May 26, 1992Assignee: Ferro CorporationInventors: Deenadayalu Chundury, Daniel L. Davidson, Berdine L. Leonard, Anthony S. Scheibelhoffer
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Patent number: 5112404Abstract: The invention relates to readily dispersible pigment formulations which are stable to flocculation and are used for pigmenting naturally occurring and synthetic materials, preferably paints and printing inks, plastics and lacquers, in particular stoving lacquers. The pigment formulations contain compounds of the general formula (I) ##STR1## in which Q.sup.1, Q.sup.2 and Q.sup.3 each denote --X--A, --OR.sup.1, --SR.sup.1, halogen, --NR.sup.2 R.sup.3 or a radical Q which is built up from up to 15 trivalent groups (Ia) such that in each case one group (Ia) is bonded via W to a free valency of the next group (Ia) or to the triazine ring of (I) and the other free valencies are bonded to --X--A, --O--R.sup.1, halogen or --NR.sup.2 R.sup.3, at least one radical --X--A being present in (I), and A stands for an aromatic system with 2 to 6 rings and at least 9 ring atoms, or stands for a group of 2 to 3 aromatic ring systems, bonded via O, S, CO, SO, SO.sub.2 or C.sub.1 -C.sub.Type: GrantFiled: April 4, 1990Date of Patent: May 12, 1992Assignee: Hoechst AktiengesellschaftInventors: Andreas Sommer, Erwin Dietz, Manfred Urban
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Patent number: 5112529Abstract: The present invention relates to a conductive material and a process for producing said conductive material. More particularly, the present invention relates to a conductive material comprising (a) a substrate obtained from a polycarbodiimide resin and (b) a dopant, which is superior in oxidation resistance, mechanical strengths and flexibility, and useful as a material for electronic field, as well as to a process for producing said conductive material.Type: GrantFiled: September 4, 1990Date of Patent: May 12, 1992Assignee: Nisshinbo Industries, Inc.Inventor: Kazuo Saito
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Patent number: 5110504Abstract: A polymer produced by removing an electrolytic ion from a polymer doped with the electrolytic ion possesses a nonlinear conductivity. An element made of this polymer, on exposure to a sine wave electric field, generates a higher harmonic wave.Type: GrantFiled: March 28, 1989Date of Patent: May 5, 1992Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Kohzo Ito, Yoshikazu Tanabe, Masa-aki Sato, Kyoji Kaeriyama