Patents Examined by Isabelle Rodriguez
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Patent number: 4917783Abstract: A method for purifying a macrocyclic ketone is disclosed which comprises light-irradiating a macrocyclic ketone containing a macrocyclic diketone as an impurity. Preferably, the macrocyclic ketone as light-irradiated is treated with an active charcoal so as to elevate the purity of the resulting macrocyclic ketone. For light-irradiation, the macrocyclic ketone may be in the form of an alcohol solution.Type: GrantFiled: March 31, 1988Date of Patent: April 17, 1990Assignee: Nippon Mining Co., Ltd.Inventors: Tadafumi Yokota, Hiroshi Okino
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Patent number: 4915854Abstract: Disclosed are conditioning agents and compositions containing such conditioning agents wherein the conditioning agents contain an amine-anionic compound ion-pair complex. These conditioning agents can provide excellent fabric care benefits when applied as part of or in the presence of detergent compositions without significantly impairing cleaning performance. The conditioning agents contain particles which consist essentially of the ion-pair complex and which have an average particle diameter of from about 10 to about 300 microns.Type: GrantFiled: October 15, 1987Date of Patent: April 10, 1990Assignee: The Procter & Gamble CompanyInventors: Mark H. Mao, Robert Mermelstein, Debra S. Caswell, Ellen S. Baker
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Patent number: 4913828Abstract: Disclosed are alkyl amine-anionic surfactant ion-pair/wax composites useful as fiber- and fabric-conditioning agents. Also disclosed are compositions containing these conditioning agents such as fabric detergent compositions, shampoos, hair conditioners and dryer- and washer-added fabric conditioners.Type: GrantFiled: June 10, 1987Date of Patent: April 3, 1990Assignee: The Procter & Gamble CompanyInventors: Debra S. Caswell, Mark H. Mao
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Patent number: 4913791Abstract: A method and apparatus is disclosed for supporting and handling blot membranes during the course of blotting, analysis and storage.Type: GrantFiled: March 1, 1989Date of Patent: April 3, 1990Assignee: Bios CorporationInventors: Stanley M. Hurd, Richard E. Kouri
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Patent number: 4911851Abstract: Fabric softener particles comprising an inner core of fabric softening composition and an outer coating completely surrounding said core. The outer coating is substantially water-insoluble and protects the inner core from dissolving when present in a typical fabric laundering operation, but releases the softener composition to the fabrics when the fabrics are dried in a heated dryer. The particles contain water-insoluble particulate materials, e.g., silica particles, having a diameter of greater than about one micron to reduce the shiny appearance of visible softener spots which occasionally are present on fabrics treated with said fabric softener particles and to maintain a relatively constant viscosity.Type: GrantFiled: February 27, 1989Date of Patent: March 27, 1990Assignee: The Procter & Gamble CompanyInventors: Joseph M. Ladd, Jr., Michelle F. Mellea, Thomas J. Wierenga
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Patent number: 4910140Abstract: Electroporation of prokaryotic cells is achieved by the application of high-intensity electric fields of short duration to reversibly permeabilize the cell walls. Preferably, the field strength of the applied will be at least about 5 kV/cm and the duration of the exposure will be in the range from 2 to 20 msec. Macromolecules may be introduced to the cells or obtained from the cells during this period of cell wall permeability. Most commonly, the method will be utilized for transformation of the cells with nucleic acids. Very high transformation efficiencies in the range from 10.sup.9 to 10.sup.10 cells/.mu.g and transformation frequencies approaching 80% and above have been achieved.Type: GrantFiled: April 18, 1988Date of Patent: March 20, 1990Assignee: Bio-Rad Laboratories, Inc.Inventor: William J. Dower
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Patent number: 4908107Abstract: The invention relates to a process for preparing compounds of the formula(I) R.sub.1 --O--CF.dbd.CF.sub.2by elimination of halogen atoms from compounds of the formula ##STR1## by electrolysis. The compounds of the formula (II) are electrolyzed in an undivided or divided electrolysis cell in an organic liquid which can also contain water at a temperature from -20.degree. C. to the boiling temperature of the electrolyte or catholyte at a current density of 1-500 mA/cm.sup.2 at a cathode made of lead, cadmium, zinc, copper, tin, zirconium, mercury, alloys of these metals or carbon.Type: GrantFiled: June 2, 1988Date of Patent: March 13, 1990Assignee: Hoechst AktiengesellschaftInventors: Steffen Dapperheld, Werner Schwertfeger, Manfred Wildt
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Patent number: 4908112Abstract: An analytical separation device in which a capillary sized conduit is formed by a channel in a semiconductor device and the channel is closed by a glass plate. Electrodes are positioned in the channel and to activate the motion of liquids through the conduit by electroosmosis.Type: GrantFiled: June 16, 1988Date of Patent: March 13, 1990Assignee: E. I. Du Pont De Nemours & Co.Inventor: Salvatore J. Pace
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Patent number: 4908159Abstract: Silicate free detergent granules contain a seed crystal for calcium carbonate, such as calcite, a non-soap detergent active, especially an anionic active and a sugar such as sucrose to provide good mechanical strength, good dispersibility and other benefits. An alkali metal (e.g. sodium) carbonate may be present in the granules. The granules may be used as such to wash fabrics or may be added to a composition containing sodium carbonate and other conventional ingredients. The granules may be made by spray-drying or pan granulation.Type: GrantFiled: July 22, 1988Date of Patent: March 13, 1990Assignee: Lever Brothers CompanyInventors: James F. Davies, Robert S. Lee, Andrew W. Travill, Robert J. Williams
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Patent number: 4904366Abstract: In the instrument for determination of the base sequence of the present invention, the ionic strength of a buffer solution in a gel is made lower at a detection part than in a region from the detection part towards a negative electrode. Therefore, at the detection part, the electric field intensity can be increased, resulting in a higher migration speed, and hence the electrophoretic pattern can be extended, so that the distance between two adjacent electrophoretic bands can be elongated.Consequently, according to the present invention, the slit width can be narrowed relatively to the electrophoretic pattern without actually narrowing the slit width, and the resolving power can be enhanced without lowering the detection sensitivity.Type: GrantFiled: December 4, 1987Date of Patent: February 27, 1990Assignee: Hitachi, Ltd.Inventors: Jiro Tokita, Keiichi Nagai, Tamotu Simada, Ken'ichi Watanabe, Ryusei Nakano, Tomoaki Sumitani
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Patent number: 4902300Abstract: Synthetic/cellulosic blend textile fabrics are simultaneously dyed and the synthetic component simultaneously treated to impart flame resistance in a single step with good color yield. Additional fabric finishing may be used to impart flame resistance to the cellulosic component of the fabric.Type: GrantFiled: May 19, 1988Date of Patent: February 20, 1990Assignee: Burlington Industries, Inc.Inventors: James R. Johnson, Randolph L. Finley
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Patent number: 4895669Abstract: Phase-stable, hard surface cleaners are provided comprising an acidic aqueous phase in which a linear alkyl aryl sulfonic acid and an alkali metal peroxymonosulfate are dissolved. The former component can provide improved chemical stability of the solubilized peroxymonosulfate, and the two components, when present in sufficient amount, result in a flowable, plastic liquid which is capable of stably suspending abrasives.Type: GrantFiled: October 26, 1988Date of Patent: January 23, 1990Assignee: The Clorox CompanyInventors: Clement K. Choy, Ellen E. Valachovic
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Patent number: 4889945Abstract: The invention relates to phosphoric acid partial esters derived from a block ethoxylated and propoxylated C.sub.9-16 aliphatic alcohol. These phosphoric acid partial esters are useful as wetting agents, especially in the pre-treatment of cellulosic textile materials.Type: GrantFiled: April 6, 1989Date of Patent: December 26, 1989Assignee: Sandoz Ltd.Inventor: Achim Wiedemann
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Patent number: 4885076Abstract: A system and method for analyzing molecular constituents of a composition sample includes: forming a solution of the sample, separating the solution by capillary electrophoresis into an eluent of constituents longitudinally separated according to their relative electrophoretic mobilities, electrospraying the eluent to form a charged spray in which the molecular constituents have a temporal distribution; and detecting or collecting the separated constituents in accordance with the temporal distribution in the spray. A first high-voltage (e.g., 5-100 KVDC) is applied to the solution. The spray is charged by applying a second high voltage (e.g., .+-.2-8 KVDC) between the eluent at the capillary exit and a cathode spaced in front of the exit. A complete electrical circuit is formed by a conductor which directly contacts the eluent at the capillary exit, or by conduction through a sheath electrode discharged in an annular sheath flow about the capillary exit.Type: GrantFiled: April 5, 1988Date of Patent: December 5, 1989Assignee: Battelle Memorial InstituteInventors: Richard P. Smith, Harold R. Udseth, Jose A. Olivares
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Patent number: 4883565Abstract: An improved method comprises electrophoretic application of enamel to a sheet steel substrate by a two layer/single stoving wherein a first or base enamel layer is applied to the sheet steel and a second white or colored enamel layer is applied to the first layer and the first layer has the following properties:(a) a coefficient of expansion below 165.times.10.sup.-7 /K at 0.degree. to 100.degree. C.,(b) a surface tension higher than 300 mN/m,(c) a transformation temperature of from 480.degree. to 520.degree. C., preferably from 490.degree. to 510.degree. C., and(d) a yield value of 15 to 30.Type: GrantFiled: February 24, 1988Date of Patent: November 28, 1989Assignee: Bayer AktiengesellschaftInventors: Bruno Hees, Hans Hoffmann
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Patent number: 4883577Abstract: An electrophoresis device comprises a gel membrane disposed within a space formed by a pair of sheets and a pair of spacers. A shark's teeth comb is disposed at an end of the gel membrane such that a plurality of triangular sample-pouring apertures are formed by its saw-like protrusions and the end of the gel membrane. The thickness of the shark's teeth comb d and the thickness of the gel membrane G satisfy the following relation:Gx1.1<d<G+50in which unit is .mu.m.Type: GrantFiled: March 28, 1988Date of Patent: November 28, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Naohiko Sugimoto, Akira Fujita
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Patent number: 4878920Abstract: Described is a process for continuously dyeing high tenacity nylon 6,6 fabrics including the sequential steps of applying to a high tenacity, highly crystalline nylon 6,6 fabric whose fibers have a breaking tenacity in the range of 6.0 to 10 g/denier and an aqueous dyebath containing a tinctorial amount of at least one dye. The dyed fabric is then steamed with superheated steam at atmospheric pressure and at temperatures greater than 100.degree. C., e.g., 100.degree. to 160.degree. C., for a time sufficient to fix the dye to the fabric, usually up to 3 minutes. Following steaming, the dyed fabric is washed to remove any unfixed dye, then dried.Type: GrantFiled: April 28, 1987Date of Patent: November 7, 1989Assignee: Burlington Industries, Inc.Inventors: Ernest J. Russell, Tanya E. FitzGerald
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Patent number: 4877413Abstract: The invention relates to a process for the end-to-end dyeing of cellulosic materials, or blends that contain cellulose, with direct and/or reactive dyes by the pad dyeing process, which comprises using an aqueous liquor that contains at least one water-soluble direct or reactive dye and at least one water-soluble anionic, colorless organic compound having an affinity factor A, at a concentration of 0.2 to 0.3 g/l, for mercerized cotton of 1.1 to 4, said factor A being the quotient of the concentration of the water-soluble, colorless organic compound in a liquor without addition of dye, before impregnation, divided by the concentration of the water-soluble, colorless organic compound in the residual liquor without dye after impregnation. The process of this invention is suitable for dyeing textile cellulosic materials or blends containing cellulose to give end-to-end dyeings of good fastness properties.Type: GrantFiled: March 26, 1987Date of Patent: October 31, 1989Assignee: Ciba-Geigy CorporationInventors: Jean-Marie Sire, Peter Scheibli
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Patent number: 4874491Abstract: The process is one concerned with the field of electrophoresis and relates more particularly to a method of supplying the electrode buffer solutions by means of using buffer-containing gels as buffer reservoirs, thus making it unnecessary for the electrophoresis equipment to have special vessels for the buffers, and providing the possibility of using electrode buffer solutions of concentrations which are extremely high in electrophoresis contexts.Type: GrantFiled: September 14, 1987Date of Patent: October 17, 1989Assignee: Pharmacia ABInventor: Ralph I. Stalberg
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Patent number: 4872965Abstract: An apparatus for cleaning soft contact lenses by the application of an electrical field and comprising a base which is made of non-conducting material for holding a lens, a fluid capable of transmitting the electrical charge, means for containing the electrical charge transmitting fluid, means for providing a DC charge, means for creating separate electrical poles, and means composed of a substance which when immersed with the electrical charge transmitting fluid is capable of transmitting the electrical charge to at least one lens for the purpose of cleaning the lens.Type: GrantFiled: February 10, 1988Date of Patent: October 10, 1989Inventor: Mark L. Pankow