Patents Examined by Terressa M. Mosley
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Patent number: 5965670Abstract: Curable film-forming compositions comprising acrylic polyols, aminoplast and carbamoyl triazines are disclosed. The compositions are useful as clear coats in composite color-plus-clear coatings.Type: GrantFiled: May 4, 1998Date of Patent: October 12, 1999Assignee: PPG Industries Ohio, Inc.Inventors: George W. Mauer, William E. Michael, John W. Burgman, Leigh-Ann Humbert
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Patent number: 5840755Abstract: A composition for topical therapy of headaches, which contains a topical carrier system for intact mammalian skin of forehead or temples or both, which contains a therapeutically effective dose of a local anesthetic for delivery to a skin surface underneath the topical carrier system.Type: GrantFiled: July 17, 1996Date of Patent: November 24, 1998Assignee: American Pharmed Labs, Inc.Inventor: Rainer K. Liedtke
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Patent number: 5767224Abstract: The invention relates to a two-step melt process for the production of thermoplastic, solvent-free, low-branching polycarbonates with low --OH terminal group content using a self-cleaning high-viscosity reactor.Type: GrantFiled: March 24, 1997Date of Patent: June 16, 1998Assignee: Bayer AktiengesellschaftInventors: Steffen Kuhling, Klaus Schebesta, Uwe Hucks, Martin Ullrich, Heinrich Schuchardt, Rolf Bachmann, Thomas Fischer, Klemens Kohlgruber, Franz Ferdinand Rhiel, Gottfried Zaby
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Patent number: 5747169Abstract: The invention provides a method of bonding a glass substrate and a nonconductive substrate comprising the steps of: (a) contacting a surface of the nonconductive substrate which is coated with a field-assist bonding material with a conforming surface of the glass substrate; and (b) applying sufficient heat to the two substrates and sufficient voltage across the two substrates to bond the two substrates together.Type: GrantFiled: November 8, 1996Date of Patent: May 5, 1998Assignee: David Sarnoff Research Center, Inc.Inventors: Zhong Hui-Hugh Fan, Aaron William Levine, Satyam Choudary Cherukuri, Steven A. Lipp
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Patent number: 5736621Abstract: A process is described for the preparation of polyesters by polycondensation of dicarboxylic acid-diol precondensates (oligomers) at elevated temperature in a liquid heat transfer medium in the presence of customary polycondensation catalysts and, if appropriate, cocondensable modifying agents, wherein the liquid heat transfer medium is inert and free of aromatic structural groups and has a boiling point in the range from 200.degree. to 320.degree. C., wherein the weight ratio of dicarboxylic acid-diol precondensate (oligomers) employed to liquid heat transfer medium is in the range from 20:80 to 80:20 and wherein the polycondensation is carried out in the reaction mixture at 200.degree. to 320.degree. C. in the presence of a dispersion stabilizer. Furthermore, the polyesters and copolyester which can be prepared by the process and their use are described.Type: GrantFiled: June 27, 1996Date of Patent: April 7, 1998Assignee: Hoechst AktiengesellschaftInventors: Peter Simon, Andree Henze, Karsten Blatter
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Patent number: 5712362Abstract: The invention relates to a process for the production of UV-stable polycarbonates, to the polycarbonates obtainable in accordance with the invention and to their use for the production of sheets, more particularly plastic panels.Type: GrantFiled: August 10, 1995Date of Patent: January 27, 1998Assignee: Bayer AGInventors: Thomas Scholl, Peter Bier
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Patent number: 5693677Abstract: The present invention discloses ceramide 3 derivatives based on monounsaturated fatty acids. A preferred compound is N-oleoylphytosphingosine (Ceramide IIIB). A method for preparing these compounds is also disclosed. The solubility of these compounds is higher than the solubility of the corresponding saturated ceramide 3 derivatives, whereas their stability is comparable to saturated ceramide 3 stabilities. In addition, a method is described for maintaining the water permeability characteristics of the skin by topical application of a formulation containing a monounsaturated ceramide 3 derivative.Type: GrantFiled: May 30, 1996Date of Patent: December 2, 1997Assignee: Gist-brocades N.V.Inventors: Johannes Wilhelmus Jacobus Lambers, Jan Verweij
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Patent number: 5688995Abstract: A description is given of o-hydroxyphenyl-s-triazines containing at least two alkoxyphenyl-substituents. They have the formula (1).The compounds according to the invention are particularly suitable as sunscreen agents in cosmetic preparations.Type: GrantFiled: May 15, 1996Date of Patent: November 18, 1997Assignee: Ciba-Geigy CorporationInventors: Helmut Luther, Dietmar Huglin, Bernd Herzog
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Patent number: 5658626Abstract: A polyester film having a coefficient of dynamic friction between the film and a metal at 80.degree. C. of not more than 0.45, a polyester film composed of a polyester comprising an ethylene terephthalate unit in a proportion of 70% or more by mole, the polyester film comprising a cyclic ethylene terephthalate trimer in a proportion of 0.7% or less by weight, laminated metal sheets and metal containers manufactured from said laminated metal sheet. According to the present invention, the polyester film shows superior sliding property and superior scratch resistance during can production, as well as the elution of oligomer from the film can be suppressed, so that when the film is used for metal containers for food, the change in and smell of the food contained therein and degraded appearance of the surface of the film caused by the deposition of oligomer are avoided.Type: GrantFiled: December 8, 1995Date of Patent: August 19, 1997Assignee: Toyo Boseki Kabushiki KaishaInventors: Katsuaki Kuze, Hiroshi Nagano, Saburoh Ohta, Kuniharu Mori, Tsutomu Isaka
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Patent number: 5646212Abstract: This invention relates to novel polymeric compounds, more particularly to novel block or graft copolymers which are useful in dispersing inorganic pigments, lakes and/or toners in organic medium, to methods for preparing such copolymers, and to surfactant compositions containing such polymers. The block or graft copolymers of the invention belong to the class in which one type of polymeric component is derived from an oil-soluble complex monocarboxylic acid and another component which is the residue of an alkyl glycol and/or a polyoxyalkylene compounds.Type: GrantFiled: September 2, 1994Date of Patent: July 8, 1997Assignee: ICI Americas Inc.Inventor: Peter Glynn Hibbert
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Patent number: 5631344Abstract: The block copolymer of polyesters and polycarbonates comprises at least one of each of the constituting units of (I) and (II) having the general formulae: ##STR1## where the sign * indicates an asymmetric carbon atom; R.sub.1, R.sup.2, R.sup.3 and R.sup.4 are either a hydrogen atom or a methyl group; m and n are respective a natural numbers ranging from 300 to 5000: The block copolymer is obtained by successive ring-opening and copolymerization of optically active .beta.-butyrolactones and cyclic carbonates in the presence of a catalyst.The block polymer obtained has high molecular weight and high melting temperature, and can thus be used as a high strength material for practical use and which has bio-degradable and hydrolyzable nature.Type: GrantFiled: October 27, 1995Date of Patent: May 20, 1997Assignee: Takasago Koryo Kogyo Kabushiki Kaisha (Takasago International Corporation)Inventors: Hideyuki Hongo, Akio Yamaguchi, Yoji Hori, Toshimitsu Hagiwara, Yoko Takahashi
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Patent number: 5627255Abstract: Novel poly(arylester-carbonate)s of the formula ##STR1## are disclosed, as well a process for preparing such poly(arylester-carbonate)s.Type: GrantFiled: March 30, 1994Date of Patent: May 6, 1997Assignee: Council of Scientific & Industrial ResearchInventors: Abbas-Alli G. Shaikh, Swaminathan Sivaram
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Patent number: 5618890Abstract: The invention relates to polycarbonates (PC) terminated by allylphenols, preferably eugenol, and subsequently grafted with maleic anhydride (MA) in the melt, to their use as blending partners for polyamides (PA) and to the polycarbonate/polyamide blends.Type: GrantFiled: August 17, 1995Date of Patent: April 8, 1997Assignee: Bayer AktiengesellschaftInventors: Burkhard K ohler, Klaus Horn
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Patent number: 5605754Abstract: A thermoplastic article having on the outer surface thereof a protective layer having in admixture a trihydricphenol-benzotriazole ultra violet light absorber and a thermoplastic resin preferably a polycarbonate. The protective layer may be coated on the thermoplastic substrate or it may be co-extruded with the thermoplastic substrate.Type: GrantFiled: November 30, 1995Date of Patent: February 25, 1997Assignee: General Electric CompanyInventors: Josef G. Berndsen, Luca P. Fontana
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Patent number: 5596067Abstract: A method for producing an aromatic polycarbonate comprises introducing to an introduction zone (having a perforated plate) a) a molten monomer mixture of an aromatic dihydroxy compound and a diaryl carbonate, or b) a molten prepolymer obtained by a process comprising reacting an aromatic dihydroxy compound with a diaryl carbonate, and allowing the monomer mixture or prepolymer in the molten state to pass downwardly through the perforated plate and fall freely through a free-fall polymerization reaction zone, thereby effecting polymerization of the monomer mixture or prepolymer during the free-fall thereof. Colorless and high quality aromatic polycarbonates are thus stably produced at a high polymerization rate for a prolonged period of time, using an apparatus which has excellent sealing properties under high vacuum and maintenance of which is easy.Type: GrantFiled: September 1, 1995Date of Patent: January 21, 1997Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Kyosuke Komiya, Yoshifumi Kawakami, Hiroshige Okamoto
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Patent number: 5588083Abstract: The invention pertains to a non-linear optically active (NLO) side chain polycarbonate and to NLO active waveguides containing said polycarbonate. Waveguides containing this NLO polycarbonate have a low loss of signal. Polycarbonates based on bischloroformates of hexafluorobisphenol A, hexafluorotetrabromobisphenol A and bisphenol S or deuterated bisphenol A or sulphonylbiphenol are especially preferred within the framework of the invention: they were found to give an exceptionally low loss of signal. The invention further pertains to cross-linkable and already cross-linked polycarbonates. Especially preferred polycarbonates according to the invention are those where the diol comprises a rigid donor group. These polycarbonates have a high Tg, which renders them thermally stable.Type: GrantFiled: September 26, 1994Date of Patent: December 24, 1996Assignee: Akzo Nobel N.V.Inventors: Tjerk O. Boonstra, Ulfert E. Wiersum
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Patent number: 5567802Abstract: Polycarbonate compositions are redistributed by melt equilibration using as the redistribution catalyst a tetraorganophosphonium hydroxide, preferably a tetra-(C.sub.1-6 alkyl)phosphonium hydroxide. Such catalysts have numerous advantages including greater redistribution efficiency, decreased color in the redistributed product and the capability of employment in the anhydrous state.Type: GrantFiled: November 20, 1995Date of Patent: October 22, 1996Assignee: General Electric CompanyInventor: Patrick J. McCloskey
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Patent number: 5563235Abstract: Fluorinated aldehydes are made by reacting a fluorinated acyl chloride with a silicon hydride in the presence of palladium. Also disclosed are fluorinated ether aldehydes and their polymers, a process for making fluorinated aldehydes polymers using titanium or aluminum alkoxide catalysts, and a process for endcapping fluorinated polymers using perfluoroallyl fluorosulfate or fluorine.Type: GrantFiled: January 16, 1996Date of Patent: October 8, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: William B. Farnham
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Patent number: 5563223Abstract: A coat resin composition comprising a polyester (A) comprising an acid component comprising an aromatic dicarboxylic acid in a proportion of 50-100% by mole relative to the entire acid component and other carboxylic acid(s) in a proportion of 50-0% by mole relative to the entire acid component, and a glycol component comprising 2-methyl-1,3-propanediol and/or 1,3-propanediol in a proportion of 1-25% by mole relative to the entire glycol component and an alkylene glycol having 5 to 10 carbon atoms in a proportion of 75-99% by mole relative to the entire glycol component, or an alicyclic glycol in a proportion of 20-85% by mole relative to the entire glycol component, an addition product of bisphenol A with alkylene oxide in a proportion of 80-15% by mole relative to the entire glycol component and other glycol(s) in a proportion of 0-50% by mole relative to the entire glycol component, wherein the total of the glycols is 100% by mole, the polyester (A) having a reduced viscosity of not less than 0.Type: GrantFiled: June 29, 1995Date of Patent: October 8, 1996Assignee: Toyo Boseki Kabushiki KaishaInventors: Hiroshi Tachika, Kenji Ohama, Keiichiro Togawa, Masami Oka
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Patent number: RE35499Abstract: A polycarbonate composition, and process for making same, wherein the monocarbonate and dicarbonate content is eliminated or limited to negligibly low levels by withholding introduction of chain terminator to the reaction mixture until the reaction of dihydroxy and carbonic acid derivative starting materials has run substantially to completion.Type: GrantFiled: May 17, 1993Date of Patent: April 29, 1997Assignee: The Dow Chemical CompanyInventors: Sarat Munjal, Che I. Kao