Patents Examined by Valerie Fee
  • Formulation to protect from the corrosion metal-coating mirrors and similar and procedure for the production thereof
    Patent number: 5389301
    Abstract: A lead-free anticorrosive formulation applied in layer form for the protection of metal films applied to transparent supports, said formulation comprising a binder consisting of at least one resin selected from the group consisting of isomerized rubber, urethane oil, alkyd, modified alkyd, acrylic, phenol and epoxy resins; at least one melamine resin; a corrosion-inhibiting pigment consisting cyanoacetylurea; fillers; metal oxides; at least one solvent; and adhesion promoting additives. Said formulation being particularly useful with mirrors, reflective surfaces and the like.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: February 14, 1995
    Assignee: Fenzi S.p.A. Vernici Ed Accessori Vetrari
    Inventor: Fernando Fenzi
  • Process and composition for purifying semiconductor process gases to remove Lewis acid and oxidant impurities therefrom
    Patent number: 5385689
    Abstract: Scavenger compositions useful for purifying process gas streams, such as process gas streams, such as hydrogen, nitrogen, noble gases, diborane, and hydride gases from Groups IVA-VIA of the Periodic Table, such as arsine, phosphine, silane, germane, hydrogen selenide, and hydrogen telluride, and mixtures thereof, to remove water, oxygen, and other oxidant and Lewis acid impurities therefrom, such scavenger comprising a porous, high surface area inert support having thereon an active scavenging species, formed by the deposition on the support of a Group IA metal and pyrolysis thereof at a selected elevated temperature on said support.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: January 31, 1995
    Assignee: Novapure Corporation
    Inventors: Glenn M. Tom, James V. McManus
  • Reaction product of nitrogen bases and phosphate esters as corrosion inhibitors
    Patent number: 5380466
    Abstract: A method for inhibiting corrosion of metal surfaces in an aqueous medium, comprising incorporating into the medium a corrosion inhibitor in an amount sufficient to inhibit corrosion, the corrosion inhibitor comprising a water-soluble agent selected from the group consisting of compositions of the formula ##STR1## compositions of the formula and mixtures thereof, wherein R is R.sup.2 --(OCH.sub.2 CH.sub.2).sub.x --wherein R.sup.2 is a substituted or unsubstituted alkyl, aryl, or aralkyl group of from about five to about fifteen carbon atoms, each carbon atom having at least one hydrogen and x is an integer of from about one to about ten, and R'N is a basic nitrogen compound that is at least water-dispersible.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: January 10, 1995
    Assignee: Petrolite Corporation
    Inventor: Richard L. Martin
  • Halogenated polycarboxycubanes
    Patent number: 5378333
    Abstract: The disclosure describes photochemical synthesis of halogenated polycarboxycubanes from simple carboxycubanes and an oxalyl halide. It is possible to synthesize 6-Chloro-1,2,4,7-tetracarbomethoxycubane and 2-Chloro-1,3,5,7-tetracarbomethoxycubane. Photochemical synthesis of halogenated polycarboxycubanes from carboxy cubane and an oxalyl halide is reported.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: January 3, 1995
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Abdollah Bashir-Hashemi
  • Preparation of zinc polyphosphate in high PH solution
    Patent number: 5378401
    Abstract: An improved method is disclosed for preparing zinc polyphosphate in a stable, concentrated solution, for water treatment purposes having a pH above 7.0 and in a preferred range of pH between 8.0 and 10.0. Without any acid solubilization required, an approximate 60% solution of tetrapotassium pyrophosphate (TKPP) is formulated and mixed thoroughly in a tank or similar container. Under constant stirring, a predetermined aqueous solution of a normal zinc salt, such as zinc chloride, gradually injected and mixed together into the TKPP solution at a preferred rate of about 5% of the zinc salt solution per minute and in a sufficient amount determined to add about 1 part of zinc to between 5-8 parts of TKPP by weight for maximum corrosion protection.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: January 3, 1995
    Assignee: Klenzoid, Inc.
    Inventors: James J. Derham, Joseph E. Lubitsky, William C. Flanagan
  • Flowable microbicidal agents
    Patent number: 5374378
    Abstract: There are described liquid microbicidal agents containing compounds from the series comprising o-phenylphenol, p-chloro-m-cresol, p-chloro-m-xylenol and pentachlorophenol and not more than 50 percent by weight of an organic solvent or solvent mixture, and their preparation and use.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: December 20, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jens-Peter Lorentzen, Walter Radt, deceased, Horst-Dieter Lehmann
  • Agent inhibiting the corrosive characteristics of nitrogenous fertilizing solutions, process using the said agent and nitrogenous fertilizing solutions containing the said agent
    Patent number: 5372748
    Abstract: Process for inhibiting the corrosive characteristics of a nitrogenous fertilizing solution comprising incorporating in said nitrogenous fertilizing solution at the moment of its constitution, about 50 to about 150 ppm of at least one of the linear esters of acid phosphates having the formulae; ##STR1## wherein R1 and R2 which are identical or different from one another, are selected from the group consisting of the n-heptyl, n-octyl, n-nonyl and n-decyl radicals.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: December 13, 1994
    Assignee: CFPI
    Inventors: Joseph Schapira, Jean-Claude Cheminaud, Pascal Petitbon, Dominique Imbert
  • Scale control in gold and silver mining heap leach and mill water circuits using polyether polyamino methylene phosphonates
    Patent number: 5368830
    Abstract: Calcium carbonate scale deposits, occurring in gold and silver mining involving the cyanidation process which utilizes heap and vat leaching, and carbon-in-pulp, carbon-in-leach, particularly activated carbon separation columns; said scale deposits forming on the carbon surfaces and in the emitters and sprinklers of the heap leaching system, are controlled using polyether polyamino methylene phosphonates, which provide effective inhibition despite the severe conditions encountered in these systems, including very high pH's.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: November 29, 1994
    Assignee: Calgon Corporation
    Inventors: Nicholas J. Alfano, Bennett P. Boffardi
  • Preparation of salt solutions of phosphonocarboxylic acids
    Patent number: 5368773
    Abstract: A substantially 100% active aqueous solution of one or more phosphonocarboxylic acids and one or more hydroxides, wherein the solution has a slightly alkaline pH. In an alternate embodiment, a dry, free flowing mixture comprising one or more phosphonocarboxylic acids, calcium chloride fines which, on average, are a dihydrate, and hydroxide is disclosed.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: November 29, 1994
    Assignee: Anco Chemicals Inc.
    Inventor: John Humphrey
  • Corrosion control composition and method for boiler/condensate steam system
    Patent number: 5368775
    Abstract: A corrosion control composition and method for boiler/condensate steam systems is provided. Corrosion is controlled by the addition to the feedwater of a relatively high molecular weight amine. The high molecular weight amine is formulated so that at the conditions of temperature and pressure in the boiler/condensate steam system, partial degradation into more volatile amines occurs. The resulting blend of neutralizing amines provides the superior corrosion control of a blend of neutralizing amines from a single amine feed. The preferred high molecular weight amine is dimethylaminopropylamine which will partially degrade into dimethylamine, trimethylamine, methylamine, and dimethylaminopropanol.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: November 29, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: Anthony M. Rossi, Alexander C. Mc Donald
  • Corrosion protection additives based on epoxides
    Patent number: 5368776
    Abstract: A method for improving the corrosion inhibition of lubricating oils especially those of vegetable origin which comprises adding an efficient amount of the reaction product of an epoxidized fatty acid ester, especially an epoxidized methyl ester of an unsaturated fatty acid and a sulphonic acid and a process for producing these reaction products.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: November 29, 1994
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Volker Schafer, Robert Kohler, Alfred Pauli, Achim Fessenbecker
  • Use of dispersant additives as process antifoulants
    Patent number: 5368777
    Abstract: Reaction products of polyalkenylsuccinic anhydrides with a prereacted product of polyamine and a cyclic carbonate are used as effective antifoulants in liquid hydrocarbonaceous mediums, such as crude oils, during processing of such liquids at elevated temperatures.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: November 29, 1994
    Assignee: Betz Laboratories, Inc.
    Inventor: David R. Forester
  • Desiccant composition and a method of desiccating articles
    Patent number: 5346645
    Abstract: The invention provides a desiccant composition comprising an alcohol and a fluorinated aliphatic hydrocarbon compound of the general formulaC.sub.n F.sub.m H.sub.2n+2-mwherein m and n each is a positive integer satisfying the relations: 4.ltoreq.n.ltoreq.6 and 2n-2.ltoreq.m<2n+2, and a method of desiccating an article with said desiccant composition.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: September 13, 1994
    Assignee: Daikin Industries, Ltd.
    Inventors: Yukio Omure, Satoshi Ide, Takahiro Matsuda, Hirokaza Aoyama, Eiji Seki
  • Vapor phase corrosion inhibitor-desiccant material
    Patent number: 5344589
    Abstract: A vapor phase corrosion inhibitor-desiccant composite comprising silica gel granules coated with a vapor phase corrosion inhibitor component. The corrosion inhibitor component is selected from a formulation comprising anhydrous molybdates such as ammonium dimolybdate, sodium molybdate and amine molybdates mixed with benzotriazole and sodium nitrate, or from a formulation comprising amine benzoates, amine nitrates and benzotriazole. The composites can be impregnated into foam, extruded with polyolefin films which can additionally be laminated with metallized second film, or encapsulated in an air-permeable container. The corrosion inhibitor formulations have vapor pressures which provide ongoing corrosion protection for susceptible articles situated favorably with respect to the composite.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: September 6, 1994
    Assignee: Cortec Corporation
    Inventors: Boris A. Miksic, Joseph M. Foley, Tsi-Zong Tzou
  • Method for inhibiting corrosion of metals using polytartaric acids
    Patent number: 5344590
    Abstract: A method for inhibiting corrosion of metals in contact with an aqueous solution comprising adding to the system a corrosion inhibiting amount of one or more polytartaric acid compounds having the generalized formula: ##STR1## wherein each R is independently selected from the group consisting of H and C.sub.1 to C.sub.4 alkyl, n is less than 4 and the average molecular weight of the mixture corresponds to an average n in the range 1.2 to 3.
    Type: Grant
    Filed: January 6, 1993
    Date of Patent: September 6, 1994
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Charles G. Carter, Lai-Duien G. Fan, Joseph C. Fan, Robert P. Kreh, Vladimir Jovancicevic
  • Agents for controlling underwater fouling organisms
    Patent number: 5342547
    Abstract: The present invention relates to an underwater anti-fouling composition which contains at least one indole compound represented by the Formula (1) which serves as an underwater anti-fouling agent: ##STR1## wherein Y is selected from the group consisting of hydrogen, lower alkyl and phenyl; and wherein X.sup.1, X.sup.2, X.sup.3, X.sup.4, X.sup.5 and X.sup.6 are independently selected from the group consisting of hydrogen, halogen, lower alkyl, lower alkoxy, nitro, cyano, cyano lower alkyl, halogenated lower alkyl, substituted or unsubstituted phenyl, aralkyl, aralkyloxy, lower alkoxycarbonyl, aliphatic lower acyl, aliphatic lower acyloxy, lower alkoxycarbonyl-lower alkyl, aromatic acyl, lower-cycloalkylamino-lower alkyl, nitrovinyl, pyridyl lower alkyl, carbamoyl lower alkyl, carbamoyl, diallylamino lower alkyl and di-lower-alkylamino-lower alkyl.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: August 30, 1994
    Assignee: Marine Biotechnology Institute Co., Ltd.
    Inventors: Kazumi Konya, Nobuyoshi Shimizu, Wataru Miki
  • Compositions and methods to clean contact lenses
    Patent number: 5338480
    Abstract: Compositions and methods to clean contact lenses are disclosed. In one embodiment, the present composition comprises at least at least one enzyme capable of removing debris from a contact lens and at least one disinfectant destroying component capable of destroying a contact lens disinfectant which is incompatible with the at least one enzyme. The composition is structured so that the at least one enzyme is released in a liquid medium containing the contact lens disinfectant at substantially the same time or after the at least one disinfectant destroying component is released in the liquid medium, thereby allowing the at least one enzyme to remove debris from a contact lens in the liquid medium.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: August 16, 1994
    Assignee: Allegan, Inc.
    Inventors: Anthony J. Dziabo, Hampar Karageozian, Paul S. Ripley, Sam W. Lam, J. Abraham Espiritu
  • Methods, compositions and apparatus to disinfect lenses
    Patent number: 5336434
    Abstract: Methods for disinfecting a lens are disclosed. In one embodiment, the methods comprise contacting a lens, e.g., a contact lens, to be disinfected with a liquid medium containing stabilized chlorine dioxide and an activator component selected from chlorine dioxide reducing agents and mixtures thereof to effect formation of chlorine dioxide from the stabilized chlorine dioxide, thereby disinfecting the lens. Compositions and apparatus useful in the above-noted methods are also disclosed.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: August 9, 1994
    Assignee: Allergan, Inc.
    Inventors: John Y. Park, Paul S. Ripley, Anthony J. Dziabo
  • Composition and method for sulfide control
    Patent number: 5336431
    Abstract: This application describes a composition comprising an alkali metal permanganate and a water soluble nitrate salt and a method of controlling the sulfide content and the odor of sulfur containing waste water by adding the composition of the invention to the waste water.
    Type: Grant
    Filed: January 6, 1993
    Date of Patent: August 9, 1994
    Assignee: Carus Corporation
    Inventors: Bruce E. Richards, Tyrone G. Goodart, Philip A. Vella, John R. Walton
  • Corrosion inhibition in highly acidic environments by use of pyridine salts in combination with certain cationic surfactants
    Patent number: 5336441
    Abstract: A method for inhibiting corrosion of ferrous surfaces in an acidic, aqueous medium is disclosed. The method comprises incorporating into the medium a corrosion-inhibiting amount of a pyridine salt composition (comprising a quaternary pyridine salt composition and/or a pyridine.HCL salt composition) and a cationic surfactant that forms a bilayer on the ferrous surfaces in the medium. Highly quaternized pyridine salt compositions useful in such method and a method for preparation of such compositions are also disclosed.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: August 9, 1994
    Assignee: Petrolite Corporation
    Inventors: Sayed S. Shah, William F. Fahey, Bernardus A. Oude Alink