Patents Examined by Michael R. Lusignan
  • Patent number: 5326595
    Abstract: A post treatment for carbon-carbon substrates for the protection of carbon and graphite materials to which have been applied a silicon carbide primary coating from degradation at elevated temperatures. The treatment comprising coating the substrate with a first film of monoaluminum phosphate, water, particulate silicate carbide, silicon carbide felt, alumina, and boron; curing the first film, applying over the first film, a second film comprising water, sodium silicate, sodium borate, particulate silicon carbide and silicon carbide felt, and curing the second coating. Optionally a third film may be applied over the cured second film. The third film comprises sodium borate, water and sodium silicate which is cured after application.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: July 5, 1994
    Assignee: Loral Vought Systems Corporation
    Inventor: David M. Shuford
  • Patent number: 4902536
    Abstract: A method for the production of a protective layer on a structural part against thermal, chemical and/or mechanical stresses, particularly structural parts of complex shape such as turbine blades in which powder of a starting material for the layer is suspended in a suspension liquid and the suspension is held at a temperature just above the freezing point of the suspension. The structural part to be coated is maintained at a temperature below the freezing point of the dispersing liquid and is dipped into the suspension so that a layer of the powder present in the suspension freezes firmly on the part. The thickness of the layer is dependent on the temperature of the structural part and the length of time during which the structural part remains immersed on the suspension. The structural part now coated with the powder layer is subjected to freeze drying and is thereafter heated to a temperature above the freezing point of the suspension.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: February 20, 1990
    Assignee: MTU Motoren-und Turbinen-Union Munchen GmbH
    Inventor: Werner Huether
  • Patent number: 4847090
    Abstract: A confection piece having two or more discrete parts, each part being different from another in respect of at least one of its physical and/or chemical properties such as in respect of at least one or a combination of its coloration, material composition or texture. The confection piece can be used to combine diverse confections to provide new and unique organoleptic response for the user and its also can be used as a vehicle for oral administration of nutrients and medicinal compositions and particularly where same include interactive components which should be kept separated until the confection piece is dissolved in the user's mouth. A method for making the confection piece also is disclosed.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: July 11, 1989
    Assignee: Warner-Lambert Company
    Inventors: Joseph A. Della Posta, Anthony P. Piano
  • Patent number: 4842868
    Abstract: The invention relates to a unique set of compositions of matter characterized by including defined active agents covalently bonded to carbonium ion base groups, as well as the method of creating the compositions. The covalently bonded compositions include base groups in the nature of ketene acetals and vinyl ethers and the thio equivalents thereof. The available active agents include alcohols, phenols, carboxylic acids, thiols, amines, amides, urethanes, phosphate esters, sulfonic acids and oximes. The compositions may either be in capped form or leashed to a polymeric backbone. The compositions are ordinarily formed by self actuating reactions when the appropriate base groups and active agents are juxtaposed under proper environmental conditions. The primary uses of the compositions are in controlled release applications such as drugs, topical insecticides and the like or in any application where predictable hydrolytic release of the active agent is desirable.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: June 27, 1989
    Inventor: Robert F. Helwing
  • Patent number: 4835819
    Abstract: A fastener, and a process and apparatus for coating fasteners, in which a resin type material is applied to the fastener is disclosed. A stream of resin type material is directed to each fastener and the threads of each of the fasteners, the threads may be covered over an arcuate variable length including complete coverage. The resin type material applied may be a masking material, a lubricating material and/or an insulating material enabling an accurate and consistent torque-tension characteristic to be maintained during coupling of the fastener in a variety of post-processing environments. Furthermore, the resin type material applied to the fastener is substantially resistant to the deposition of corrosion resistant or preventative materials.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: June 6, 1989
    Assignee: Nylok Fastener Corporation
    Inventor: Richard Duffy
  • Patent number: 4806410
    Abstract: Processes for the production of antistatic or static dissipative papers. The papers produced may be expeditiously used in dunnage converter machines operable to produce an antistatic (static dissipative) resilient pad-like cushioning dunnage product, for packaging and the like. In one of the processes, liquid antistatic material is applied to a still wet porous paper web produced on a Fourdrinier-type paper making machine, and in predetermined amount for impregnation therein, prior to the completion of the drying of the paper. In another process, a web of dry paper is impregnated with liquid antistatic material, and then the treated web is dried.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: February 21, 1989
    Assignee: Ranpak Corp.
    Inventors: Steven E. Armington, Stephen A. Halperin, Gordon E. Pickett, Barbara A. Metz
  • Patent number: 4799361
    Abstract: This invention relates to apparatus for the cryopreparation of biological tissue samples for ultrastructural analysis. The use of apparatus comprises vitrifying a biological tissue sample under cryogenic temperature conditions and ultra low vacuum conditions. The depressurized, vitrified tissue sample is brought to equilibrium in a sample holder at a temperature of less than C. The tissue sample is then dehydrated while maintained in a state of thermal equilibrium. After reaching equilibrium the tissue sample is optionally infiltrated with a degassed resin followed by a polymerization of the resin to form an embedded tissue sample.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: January 24, 1989
    Assignee: Board of Regents, The University of Texas System
    Inventor: John G. Linner
  • Patent number: 4796564
    Abstract: A disposable carrier is disclosed for supporting and positioning auto light covers during spray coating and heat curing of the coating, the carrier being reusable for extended periods by having a renewable upper surface to allow ready removal of accumulations of coating material overspray. The renewable upper surface comprises a plurality of stacked layers of absorbent paper each having aligned openings together defining a light cover receiving recess, each layer of which may be stripped away periodically, to expose a fresh absorbent surface. The absorbent paper layers are mounted on a support board, which also has mounted thereto center pieces fixed in the recesses to locate each light cover laterally.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: January 10, 1989
    Inventor: Francis M. Smith
  • Patent number: 4795673
    Abstract: Dense, strong, composite materials are produced from mixtures of silicon and silicon carbide. The composite materials are characterized by a mixture of finely-divided silicon carbide in a substantially continuous matrix of silicon. The composite materials contain from about 40 to about 60 percent by volume silicon carbide and from about 60 to about 40 percent by volume silicon. The composite materials are produced by initially producing a finely-divided silicon carbide starting component and forming the component into a green body of the desired shape. The green body is subsequently impregnated with molten silicon in the absence of any substantial amount of carbon. Suitably, a thermoplastic resin binder may be added to the silicon carbide starting material to aid in forming the green body. The impregnation step may be carried out by surrounding the green body with finely-divided silicon metal and heating the covered body to a temperature above the melting point of silicon.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: January 3, 1989
    Assignee: Stemcor Corporation
    Inventors: Francis J. Frechette, Martin R. Kasprzyk, Douglas J. McDowell, Joseph S. Zanghi
  • Patent number: 4794020
    Abstract: An improved process, particularly adapted for making that type of sheet vinyl covering materials known as inlaids by first depositing resinous particles on a wet ungelled layer of PVC plastisol or organosol and then passing the sheet between a heated, cylindrical surface and a means for gradually and uniformly increasing the contact pressure between the cylindrical surface and the coated surface of the sheet. Upon completion of the step, a substantially uniformly, gelled matrix layer is produced, with the resinous particles embedded therein, and having a smooth and firm surface of uniform thickness.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: December 27, 1988
    Assignee: Tarkett Inc.
    Inventors: Edward F. Lussi, Andrew J. Manning
  • Patent number: 4787186
    Abstract: A combination for securing an anchor member in a receiving material includes a hardenable reaction resin mortar containing filler material and a sleeve-like dowel member with openings extending through the dowel member wall so that mortar injected into the dowel member can escape laterally outwardly through the openings. The ratio of the diameter of the openings through the dowel member wall to the mean particle diameter with the filler material is in the range of approximately 1.5 to 12.0, and particularly 1.8 to 5.6.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: November 29, 1988
    Assignee: Hilti Aktiengesellschaft
    Inventors: Hans-Jurgen Irmscher, Ludwig Gebauer, Gusztav Lang, Peter Mauthe
  • Patent number: 4784873
    Abstract: In a method of producing flexible and durable biological specimens, tissue water and any preservative which may be present is replaced by one or more water-soluble impregnating agents by direct molecular substitution without any intermedium or solvent and without removing the tissue lipides. Polyethylene glycol may be used as the impregnating agent. The replacement preferably occurs under vacuum and the specimen may be subsequently sealed.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: November 15, 1988
    Assignee: Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH
    Inventors: Wilhelm Kienecker, Klaus Uhlmann
  • Patent number: 4784854
    Abstract: Cosmetic composition for treatment of the skin, comprising conjuctive tissue cells, particularly fibroblasts, in a nutrient medium, in which growth of the cells can occur. Flat support having an adhesive coated periphery, carrying or containing this composition, covered with a film insoluble in water. Preparation of the composition by the culture of fibroblasts in a modified Eagle medium.
    Type: Grant
    Filed: July 29, 1986
    Date of Patent: November 15, 1988
    Inventors: Marie-Christine Seguin, Jean Gueyne
  • Patent number: 4784769
    Abstract: The present invention relates to a process for coating an ultrafiltration/microfiltration membrane with a thin protective thin film comprising:(a) loading the ultrafiltration/microfiltration membrane in an enclosed reactor;(b) evacuating the reactor;(c) charging the reactor with an inert carrier gas and a gaseous nitrogen-containing organic monomer; and(d) plasma-polymerizing the organic monomer such that a thin-film protective coating of the polymerized monomer is deposited on the entire effective surface of the membrane.The present invention further relates to a nonfouling membrane comprising an ultrafiltration/microfiltration membrane substrate on which is deposited an anti-fouling polymerized nitrogen-containing organic monomer thin film protective coating.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: November 15, 1988
    Assignee: The Standard Oil Company
    Inventors: Paul J. Giordano, Jr., Richard C. Smierciak
  • Patent number: 4783348
    Abstract: Disclosed is a method and apparatus for continuously forming and depositing a layer of monomolecular amphiphilic molecules on a substrate. The present invention includes an apparatus and method for transferring and compressing an uncompressed molecular layer from one liquid surface region in a tank to another adjacent liquid surface region by using non-moving or static mechanical components which do not come into direct contact with the monomolecular layer. The present invention includes a method and apparatus which permit the continuous and simultaneous draining and replenishing of the liquid in the tank while maintaining the liquid surface level constant. The continuous replacement of the liquid in the tank with clean liquid reduces the level of contamination of the liquid in the tank. In addition, the level, as well as the type of contamination of the liquid, does not vary significantly with time.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: November 8, 1988
    Assignee: Daleco Research Development
    Inventors: Otto Albrecht, Meir Bartur, Vladimir Rodov
  • Patent number: 4781852
    Abstract: A process for preparing doped barium and strontium hexaferrite compounds having the formula (I):Afe.sub.12-r-s M.sub.r N.sub.s O.sub.19 (I)wherein A is barium or strontium; M is cobalt, zinc, nickel; N is titanium or ruthenium and r and s are individually in the range from about 0.1 to about 1.2, said process comprising:(a) forming particles of a doped Fe.sub.3 O.sub.4 /ACO.sub.3 co-precipitate wherein A is defined above from (i) a ferric compound, (ii) a ferrous compound, (iii) a barium or strontium compound, (iv) a cobalt, zinc or nickel compound, (v) a titanium or ruthenium compound and (vi) alkali metal carbonate;(b) suspending the doped Fe.sub.3 O.sub.4 /ACO.sub.3 particles in a concentrated aqueous solution of an alkali halide;(c) spray drying said suspension to form a dried powder comprising said doped Fe.sub.3 O.sub.4 /ACO.sub.3 particles distributed onto the surfaces of the high temperature-melting alkali halide crystals;(d) calcining said dried powder at a temperature from about C.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: November 1, 1988
    Assignee: Olin Corporation
    Inventors: Jerry J. Kaczur, J. Paul Deininger, Larry D. Carpenter
  • Patent number: 4781990
    Abstract: A conditioning agent is disclosed, for the pre-treatment of base materials for subsequent complete and uniform chemical metallization, characterized by a content of a quaternary organic nitrogen compound. Also disclosed is a process for the pre-treatment of base materials, employing said conditioning agent. Preferred embodiments include as active agent at least one compound of the general formula ##STR1## represents a cyclical nitrogen compound, R is hydrogen, C.sub.1 -C.sub.4 -alkyl or hydroxy-C.sub.1 -C.sub.2 -alkyl,n is 0 or 1, andx.sup.(-) is the anion of an inorganic or an organic acid.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: November 1, 1988
    Inventors: Hans-Joachim Grapentin, Hubert-Matthias Seidenspinner, Detlef Tessmann
  • Patent number: 4781982
    Abstract: Mineral particles are surface treated with an alkali metal silicate, hydrogen peroxide, an acid, or an organophosphorus compound. A preferred surface treating method utilizes sodium silicate in aqueous solution at pH greater than 9, followed by neutralization with acid to precipitate a silica coating onto surface portions of the particles. The mineral particles are preferably alumina particles. The surface-treated alumina particles may be incorporated into fluoride dentifrices or compounded with halogenated hydrocarbons and polymeric resins to form flame-retardant polymer compounds.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: November 1, 1988
    Assignee: Aluminum Company of America
    Inventors: Lawrence L. Musselman, Larry F. Wieserman
  • Patent number: 4777050
    Abstract: The invention relates to a controlled release dosage form comprising three actives: acetaminophen, pseudoephedrine and dexbrompheniramine.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: October 11, 1988
    Assignee: Schering Corporation
    Inventor: Winston A. Vadino
  • Patent number: 4777045
    Abstract: A high bran snack, for the prevention of colon cancer, of which a typical formulation is: graham (whole wheat) flour, 40 percent; rice flour, 10 percent; whole wheat bran flour, 50 percent; calcium carbonate, 1.25 percent; reduced iron, 0.013 percent; and riboflavin (as a tracer), 0.02 percent. About 5 ounces of water is added per 80 ounces of dry materials. The dry materials are mixed in a ribbon blender and then fed dry into a cooker extruder. Then the water is added to the mixture in the extruder. The mixture is extrusion cooked and formed in, for example, a twin-screw cooker extruder. Each of the ingredients in the formulation has a processing, nutritional or therapeutic purpose. The extruded pieces are coated with coconut oil and powdered flavorant.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: October 11, 1988
    Assignee: Nabisco Brands, Inc.
    Inventors: Fred Vanderveer, Robert Straka, Thomas P. Calandro