Patents Represented by Attorney Robert J. Feltovic

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  • Assay of ketones in ambient air
    Patent number: 4758521
    Abstract: A method of assaying ketones in ambient air comprising contacting the air with beaded activated carbon followed by desorption with a solvent and analysis of the solvent solution for ketone content has been developed which provided superior results over prior art adsorbents, particularly when the sampling operation is conducted in the presence of humid air.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: July 19, 1988
    Assignee: Union Carbide Corporation
    Inventors: Robley E. Lushbaugh, Richard A. Conway, Joe E. Neff
  • Carbon black burner
    Patent number: 4726934
    Abstract: An improved carbon black burner for producing a carbon black with reduced grit content wherein feedstock oil is introduced radially into an atomizing fluid conduit through ports located proximate the discharge orifice of the burner.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: February 23, 1988
    Assignee: Cabot Corporation
    Inventors: Barrie J. Yates, Alan J. Austin, David J. Hammonds
  • Method for deoxidizing tantalum material
    Patent number: 4722756
    Abstract: Disclosed is a process for the reduction of oxygen content in tantalum and/or columbium-containing material comprising heating the material under a hydrogen atmosphere in the presence of an oxygen-active metal.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: February 2, 1988
    Assignee: Cabot Corp
    Inventor: Robert A. Hard
  • Tantalum powder process
    Patent number: 4684399
    Abstract: A reduction process for producing tantalum powder wherein a tantalum compound is introduced, in a continuous or incremental manner, to a reactor, during the course of the reduction reaction.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: August 4, 1987
    Assignee: Cabot Corporation
    Inventors: Roger M. Bergman, Charles E. Mosheim
  • Process for dissolving tantalum/columbium materials containing alkali metal impurities
    Patent number: 4663130
    Abstract: Disclosed is a process for dissolving tantalum and/or columbium-containing materials contaminated with alkali metal impurities. The tantalum and columbium materials are digested in a solution comprising hydrofluoric acid and a fluosilicate-containing compound. The alkali metals are reacted to form precipitated fluosilicates, which then can readily be separated.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: May 5, 1987
    Assignee: Cabot Corporation
    Inventors: Roger M. Bergman, Edwin J. Bielecki, Brian J. Higgins, Karl A. Romberger
  • Process for producing columbium oxyfluoride
    Patent number: 4592904
    Abstract: A process for the recovery of columbium values from a columbium-containing aqueous hydrofluoric acid solution. The columbium-containing solution is heated, with agitation, to cause evaporation and hydrolysis, resulting in the formation of a slurry from which columbium oxyfluoride can be separated and recovered.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: June 3, 1986
    Assignee: Cabot Corporation
    Inventors: Edwin J. Bielecki, C. Edward Mosheim, Umedray L. Sheth
  • Method for improving handling properties of a flaked tantalum powder composition
    Patent number: 4555268
    Abstract: A method for improving the handling characteristics of a flaked tantalum powder composition comprising heat treating the flaked powder component of the composition in order to pre-agglomerate the flaked component prior to mixing it with the granular tantalum powder component of the composition.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: November 26, 1985
    Assignee: Cabot Corporation
    Inventor: Marlyn F. Getz
  • Process for separating antimony from columbium solutions
    Patent number: 4518570
    Abstract: A process is disclosed for producing columbium solutions substantially free from antimony contamination. An aqueous columbium solution is contacted with an organic solvent to extract the antimony.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: May 21, 1985
    Assignee: Cabot Corporation
    Inventors: Harvey Stewart, C. Edward Mosheim
  • Method for producing fiber-shaped tantalum powder and the powder produced thereby
    Patent number: 4502884
    Abstract: A method for producing fiber-shaped tantalum powder by deforming a composite of tantalum powder and an auxiliary metal, and the powder produced thereby.
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: March 5, 1985
    Assignee: Cabot Corporation
    Inventor: James A. Fife
  • Tantalum powder composition
    Patent number: 4441927
    Abstract: An ingot-derived agglomerated tantalum powder composition comprising a select granular tantalum powder and including a critical proportion of a select flaked tantalum powder.
    Type: Grant
    Filed: November 16, 1982
    Date of Patent: April 10, 1984
    Assignee: Cabot Corporation
    Inventors: Marlyn F. Getz, Michael J. Maggio, Billy F. Hitch
  • Pyrohydrolysis of columbium oxyfluoride to columbium oxide
    Patent number: 4420469
    Abstract: A process for converting columbium oxyfluoride (CbO.sub.2 F) to columbium oxide (Cb.sub.2 O.sub.5) comprising heating CbO.sub.2 F under select pyrohydrolysis conditions.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: December 13, 1983
    Assignee: Cabot Corporation
    Inventors: Roger M. Bergman, Edwin J. Bielecki, Charles R. Nippert, Jr.
  • Stabilized polypropylene compositions
    Patent number: 4391941
    Abstract: This disclosure relates to the use of certain heat-treated carbon blacks as stabilizers against the effects of degradation caused by visible and ultraviolet light in the preparation of polypropylene resin compositions containing conventional antioxidants which impart thermal stability to the polypropylene resin.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: July 5, 1983
    Assignee: Cabot Corporation
    Inventors: George R. Cotten, Avrom I. Medalia
  • Production of carbon black
    Patent number: 4370308
    Abstract: This disclosure relates to an improved furnace process for producing carbon blacks by the incomplete combustion of hydrocarbonaceous feedstock wherein the resultant blacks either have higher surface areas than the carbon blacks normally prepared from the feedstocks or are produced more economically. The blacks produced by the process are suitable for use in all of the typical applications such as rubber plastics, inks and the like.
    Type: Grant
    Filed: May 15, 1981
    Date of Patent: January 25, 1983
    Assignee: Cabot Corporation
    Inventors: Frank R. Williams, Ronald C. Hurst
  • ID Card laminar structures and a method for preparation thereof using a transfered adhesive
    Patent number: 4322461
    Abstract: Laminar structures comprising a color diffusion transfer photographic print bonded to a vinyl sheet using an adhesive mixture of a vinyl acetate-ethylene copolymer and a hydroxylated polymer, and a method for preparation thereof using an adhesive-supporting carrier sheet.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: March 30, 1982
    Assignee: Polaroid Corporation
    Inventors: Thomas Raphael, Joseph Shulman
  • Irradiation treatment of polymeric photographic film supports
    Patent number: 4311774
    Abstract: A process for heat-stabilizing polymeric supports for diffusion transfer photographic image-receiving elements. Such treatment eliminates distortion effects in these image-receiving elements when they are exposed to high temperatures, such as encountered in ID card lamination devices.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: January 19, 1982
    Assignee: Polaroid Corporation
    Inventor: Thomas Raphael
  • Ion exchange-electrolyte layer for electrochromic devices
    Patent number: 4215917
    Abstract: Disclosed is an electrochromic variable light modulating device including an improved ion conducting medium comprising a solid or semi-solid layer of polymer of the ion exchange type wetted with a small amount of water and/or acid electrolyte solution.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: August 5, 1980
    Assignee: American Cyanamid Company
    Inventors: Robert D. Giglia, Thomas B. Reddy
  • Unsaturated polyols containing alkenyl aryl constituents
    Patent number: 4186271
    Abstract: Unsaturated polyol compounds containing alkenyl aryl constituents are described. These unsaturated polyols are prepared by reacting a polyol with an aromatic derivative including both an alkenyl constituent and a second functionality reactive with a polyol. The resulting unsaturated polyols feature an alkenyl aryl constituent which enhances polyol receptivity for graft copolymerization with vinyl monomers. The aryl constituent along with multiple hydroxyl groups of the polyol render these polyols particularly suitable for polyurethane end uses.
    Type: Grant
    Filed: September 14, 1978
    Date of Patent: January 29, 1980
    Assignee: Olin Corporation
    Inventors: Frank J. Preston, Kiran B. Chandalia
  • In-situ polyvinyl grafting of polyurethanes
    Patent number: 4181781
    Abstract: Disclosed is a process for preparing polyurethane which comprises including an azo or peroxy di-ester polyol and an ethylenically unsaturated monomer in a polyurethane reaction formulation to effect simultaneous graft copolymerization and polyurethane polymerization. Novel polyurethane compositions are produced.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: January 1, 1980
    Assignee: Olin Corporation
    Inventors: Kiran B. Chandalia, Frank J. Preston, Henry G. Barnowski
  • Functional fluid methods using alkoxysilane ester cluster compounds
    Patent number: 4175049
    Abstract: Novel alkoxysilane ester cluster compounds are disclosed. These compounds have the formula:RSi[OSi(OR').sub.3 ].sub.2 OR"wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group, and each R' and the R" groups is independently selected from alkyl, alkenyl, aryl and aralkyl with the proviso that at least a majority of the R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms. The preparation of these novel alkoxysilane ester cluster compounds and their use as functional fluids are also disclosed.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: November 20, 1979
    Assignee: Olin Corporation
    Inventor: Karl O. Knollmueller
  • Self-supporting pigment layers for electrochromic display
    Patent number: RE30835
    Abstract: An electrochromic data display and imaging device which may be formed by sandwich arrangement of the imaging area and the counter-electrode area, with a suitable self-supporting ion-conductive layer between.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: December 29, 1981
    Assignee: American Cyanamid Company
    Inventor: Robert D. Giglia