Patents Examined by Ben C. Hsing
  • Patent number: 5062935
    Abstract: When vaporizing a sample substance consisting of big molecules, in particular for the purpose of mass-spectroscopic examinations, the energy introduced for the vaporization process may lead to thermolytic decomposition of the sample substance. In order to prevent such decomposition, the invention proposes that the sample substance be mixed, prior to its irradiation, with a matrix material which is easily decomposed under the influence of the laser beam pulses. The matrix may consist of a material which absorbs the radiation and which is easily decomposed thermolytically, or else of a material which is permeable to laser radiation, but mixed with a metal powder. When the mixture is exposed to laser beam pulses, the instable matrix material will decompose first whereby the embedded molecules of the sample substance are set free. It is possible in this manner to prevent, practically completely, the molecules of the sample substance from being destructed.
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: November 5, 1991
    Assignee: Bruker-Franzen Analytik GmbH
    Inventors: Edward W. Schlag, Josef Lindner, Ronald C. Beavis, Jurgen Grotemeyer
  • Patent number: 5035783
    Abstract: The invention relates to a method for the photochemical conversion of tachysterol compounds into previtamin D compounds and of trans-vitamin D compounds into cis-vitamin D compounds under the influence of radiation, by exposing the tachysterol compound and trans-vitamin D compound, respectively, dissolved in a suitable solvent system, in the presence of a polymeric photosensitizer consisting of a polymer chain ("backbone") comprising covalently bound sensitizers suitable for the photochemical conversion, to light with a wavelength of preferably between approx. 300 and approx.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: July 30, 1991
    Assignee: Duphar International Research B.V.
    Inventors: Eric Goethals, Sebastianus J. Halkes, Robert B. Koolstra
  • Patent number: 5019235
    Abstract: An electrode, preferably of a conductive polymer, has on its surface, preferably over all of its surface, an ion exchange material, preferably of significant thickness. Such a coated electrode may be used for sensing the presence or measuring the concentration of an ionic species, or for removal from or release of an ionic species into an electrode.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: May 28, 1991
    Assignee: Raychem Corporation
    Inventors: Eric D. Nyberg, Ken A. Klingman, Jeff Curtis, Ray F. Stewart
  • Patent number: 5015348
    Abstract: An isotope separation arrangement for separating a preselected isotope from a mixture of chemically identical but isotopically different molecules by either photon-induced pure rovibrational or vibronic selective excitation of the molecules containing the atoms of the isotope to be separated from a lower to a higher energy level, and a chemical reaction of the higher energy level molecules with a chemically reactive agent to form a chemical compound containing primarily the atoms of isotope to be separated in a physicochemical state different from the physicochemical state of the mixture of chemically identical but isotopically different molecules. The chemical compound containing the atoms of the isotope to be separated may be subsequently processed to obtain the isotope.
    Type: Grant
    Filed: June 14, 1972
    Date of Patent: May 14, 1991
    Inventor: Jozef W. Eerkens
  • Patent number: 5013421
    Abstract: An electrode assembly of the flow-through type comprising as a key element a porous and a preferably microporous tubular material impregnated with a matrix of an organic plastic material containing a nonvolatile solvent plasticizer and an ion-active material dissolved in the plasticizer, the plasticizer not being a solvent for the tubular material. There is also disclosed an electrode assembly involving a membrane material in which the membrane material communicates electrically directly through a metal conductor.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: May 7, 1991
    Inventors: K. Jagan M. Rao, K. Savitri Rao
  • Patent number: 5011588
    Abstract: A dip electrode assembly comprising as a key element a porous and a preferably microporous membrane support impregnated with a membrane matrix of an organic plastic material containing a nonvolatile solvent plasticizer and an ion-active material dissolved in the plasticizer, the plasticizer not being a solvent for the membrane support. There is also disclosed an electrode assembly involving a membrane material in which the membrane material communicates electrically directly through a metal conductor.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: April 30, 1991
    Inventors: K. Jagan M. Rao, K. Savitri Rao
  • Patent number: 5004566
    Abstract: Process for forming tubular microstructures having predetermined shape and dimension from surfactants comprising the steps of selecting a lipid which self-aggregates into a tubular microstructure; selecting a lipid solvating organic solvent in which tubules may form; removing trace water from the selected organic solvent; dissolving the selected lipid in the dried organic solvent; allowing the dissolved lipid to grow into tubular microstructures in the dried organic solvent for a selected period of time and at a temperature below the melting point of the selected lipid.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: April 2, 1991
    Assignee: Geo-Centers, Inc.
    Inventors: Joel M. Schnur, Alan S. Rudolph, Mary A. Testoff
  • Patent number: 4999094
    Abstract: A method for manufacturing a color member, e.g., a color filter for a display device. A conductive thin film layer having given plural patterns is formed on an electrically insulative substrate. On the conductive thin film layer, a colored layer is formed by electrodepositing a coloring material and polymer on the conductive layer. The substrate having the colored layer thereon is cut to produce plural color members.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: March 12, 1991
    Assignee: Seiko Instruments & Electronics Ltd.
    Inventors: Hitoshi Kamamori, Koji Iwasa, Mitsuru Suginoya, Yutaka Sano, Yumiko Terada, Naoki Kato
  • Patent number: 4983270
    Abstract: A device for controlling the amount of a solid component of a paint in electrodeposition coating includes a measuring tank, a temperature detecting section including a temperature sensor disposed in the measuring tank, a section for measuring the speed of propagation of ultrasonic waves including an ultrasonic wave generator and an ultrasonic wave receiver disposed within the measuring tank, an operation section connected to the temperature detecting section and the speed measuring section for producing a control signal according to the temperature of the paint in the measuring tank and the speed of propagation of ultrasonic waves, and a supply section connected to the operation section for supplying a replenishing paint to an electrodeposition coating tank according to the control signal.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: January 8, 1991
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Makoto Kikuta, Hideo Terasawa
  • Patent number: 4983266
    Abstract: This invention relates to an electrodeposition process which comprises electrodepositing onto a conducting substrate a coating composition comprising a self-crosslinking polymeric resin which has an average of at least two pendent hydroxy functional groups and an average of at least two pendent ester groups of the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, alkyl, substituted alkyl or aryl groups; n is from about 1 to about 5; X is nitrogen, sulfur or phosphorus; and when X is nitrogen or phosphorus, R.sup.3 is hydrogen, lower alkyl, or an aryl group; R.sup.4 is lower alkyl or an aryl group; and when X is sulfur, R.sup.4 is nothing and R.sup.3 is either hydrogen, lower alkyl or aryl.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: January 8, 1991
    Assignee: The Sherwin-Williams Company
    Inventors: Goutam Gupta, Sherman J. Mels
  • Patent number: 4983454
    Abstract: A process for coating a metallic substrate, characterized by applying on a metallic substrate an electrocoating paint, applying thereon a barrier coat comprising a film-forming thermoplastic resin other than a modified polyolefin resin and capable of forming a barrier coat film having a static glass transition temperature of 0.degree. to -75.degree. C., optionally applying on said barrier coat an intermediate coating paint and then applying thereon a top coating paint.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: January 8, 1991
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Tadayoshi Hiraki, Osamu Iwase, Hirosi Oosumimoto, Shinji Sugiura, Ichiro Tabushi, Masafumi Kume, Takashi Udagawa, Komaharu Matsui, Yasuhiro Fujii
  • Patent number: 4981759
    Abstract: A coating method, which comprises(i) applying to a substrate a multilayer film-forming cationic electrodeposition paint composed of(A) a cationic electrodepositable epoxy resin having a surface tension of 40 to 60 dynes/cm and being able to form a cathodically electrodepositable aqueous bath by neutralization with an acid, and(B) a nonionic film-forming resin having a surface tension of 25 to 45 dynes/cm,the weight ratio of resin (A) to resin (B) being from 60:40 to 98:2 and the surface tension of resin (A) being greater than that of resin (B), and curing the coated film by heating,(ii) applying a water-base or organic solvent-base colored paint as a first top coat, and(iii) applying as a second top coat a powder paint capable of forming a transparent film which may be colored.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: January 1, 1991
    Assignee: Kansa Paint Co., Ltd.
    Inventors: Eisaku Nakatani, Masaru Mitsuji, Yasuhiro Fujii, Katsuya Sera, Yuzo Miyamoto, Masafumi Kume, Tadayoshi Tatsuno, Akimasa Nakahata
  • Patent number: 4981567
    Abstract: The present invention provides an electrolyte solution, a reference half-cell, and a complete electrochemical cell particularly useful in making pH measurements of industrial and waste streams having suspended solids or high salt concentrations. An electrolyte solution containing water; at least one lithium salt, e.g. lithium chloride; and at least one ionic species at a constant electrochemical potential, e.g. silver chloride, buffered to a constant pH, is used in the half-cell and complete electrochemical cell. A high concentration of total ions in the electrolyte solution provides a flow direction out of the cell into the test stream, thereby reducing or eliminating the problems of cell contamination and plugging previously encountered. A second solution of high total ionic concentration, e.g. lithium nitrate, is also provided as a salt bridge in the cells to further insure diffusion of the cell electrolyte solution out into the stream being tested.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: January 1, 1991
    Assignee: The Dow Chemical Company
    Inventor: Duane K. Wolcott
  • Patent number: 4980039
    Abstract: This is disclosed a process for the decomposition of halogenated hydrocarbons including polychlorinated biphenyls (PCB) and chlorinated pesticides, as DDT and DDE. The process comprises microwave-mediated wet-ashing of the halogenated hydrocarbons(s) in controlled conditions to avoid an emission of noxious fumes from the reaction mixture. Preferably, the wet-ashing reagent is a 1:1 mixture of nitric acid and sulfuric acid.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: December 25, 1990
    Assignee: Canadian Patents & Development Ltd.
    Inventors: Prasad Aysola, Perry D. Anderson, Cooper H. Langford
  • Patent number: 4980038
    Abstract: A cosmetic of stable quality is produced by a method which comprises applying superposed electric waves severally on an aqueous part and an alcohol part or an oil part, then mixing the aqueous part with the alcohol part and/or the oil part, and subsequently applying the superposed electric waves on the resultant mixture. By this method, in spite of the absence of a surface active agent, the aqueous part and the alcohol part and/or the oil part are uniformly dissolved, dispersed, or emulsified in each other to produce a cosmetic lotion, a cosmetic milky lotion, or a cosmetic cream which remains stably for a long time.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: December 25, 1990
    Inventors: Shizuho Watanabe, Shigenobu Fujimoto
  • Patent number: 4980429
    Abstract: A low cure cathodic electrodepositable resin is disclosed. The backbone of the resin is a polyepoxide amine adduct which is crosslinked with aminoplast resins and catalyzed by metal catalysts. The resin is capable of curing in a basic environment at a temperature below 150.degree. C. The resin can be salted with an acid and can be dissolved or dispersed in water. The aqueous dispersions can then be formulated into electrocoat primer coatings for metal objects.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: December 25, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward Chu
  • Patent number: 4978508
    Abstract: A method and apparatus for decontaminating soil which has been contaminated with hazardous hydrocarbons. The apparatus includes a blending or scrubbing unit for mixing the contaminated soil with water and a suitable surfactant to form a slurry; screening apparatus operably interconnected with the blending unit for removing from the slurry particles larger than a predetermined size to form a small particle slurry; a reactor unit operably interconnected with the screening apparatus for reacting the slurry with ozone to form an ozone enriched slurry; an ultraviolet radiation generator for irradiating the ozone enriched slurry with ultraviolet radiation; a static mixer operably interconnected with the reactor unit for mixing a floculating material with the slurry to form a floculated slurry; and a belt-forming press for receiving the floculated material from the static mixer and for forming the floculated slurry into contamination free blocks.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: December 18, 1990
    Assignee: Pacific Resource Recovery Corp.
    Inventors: Andrew H. Hansen, William C. Walker, Richard K. Walker, Sam Braly
  • Patent number: 4978435
    Abstract: Free chlorine values are removed by radical chlorination from uncombined admixtures thereof, notably admixtures of free chlorine and at least one halogenated organic compound that is not completely chloro-substituted.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: December 18, 1990
    Assignee: Atochem
    Inventors: Jean-Jacques Masini, Bertrand Collier
  • Patent number: 4976836
    Abstract: Cathodic electrocoating compositions and processes are improved by the addition of at least 0.10% hydrogen peroxide by weight based on polymer to electrocoating composition.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: December 11, 1990
    Assignee: The Glidden Company
    Inventor: Eulogio D. Lazaro
  • Patent number: 4976834
    Abstract: An optically active substance having an optical purity of at least 50% e.e. is obtained by an asymmetric photochemical reaction by converting a starting, achiral material in a chiral crystalline form and irradiating light to the chiral crystalline form to effect the photocyclization of the starting material.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: December 11, 1990
    Assignee: Daicel Chemical Industries, Ltd.
    Inventor: Fumio Toda