Patents Represented by Attorney Harold N. Wells

Find this attorney in the Justia Lawyer Directory

  • Ceramic Fiber reinforced silicon carboxide composite with adjustable dielectric properties
    Patent number: 5318930
    Abstract: A fiber reinforced glass composite capable of absorbing or transmitting microwave radiation includes refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x is greater than zero and up to about 2.0, and y is greater than zero and up to about 2.2. Preferably, the black glass ceramic is made by pyrolyzing precursor polymers derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group in a controlled atmosphere, thereby adjusting the dielectric properties.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: June 7, 1994
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, Stephen T. Gonczy
  • Method for forming fiber-reinforced glass composite protective layers on insulating bodies
    Patent number: 5308421
    Abstract: An improved protective layer for ceramic insulating bodies includes a composite having a refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3 0, preferably 0.7 to 1.8. The black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group. The protective layer is formed by laying up plies of a prepreg on the insulating body following by pressing, curing and pyrolyzing said prepreg to form said protective layer.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: May 3, 1994
    Assignee: Allied-Signal Inc.
    Inventors: Stephen T. Gonczy, Roger Y. Leung
  • Packing adsorbent particles for storage of natural gas
    Patent number: 5308821
    Abstract: The ability of a packed bed of adsorbent to hold a gas is increased by employing at least two sizes of adsorbent particles having nominal diameters differing by at least 7/1. In a preferred embodiment, the capacity of a bed of carbon molecular sieve particles for adsorption of natural gas is significantly improved.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: May 3, 1994
    Assignee: Allied-Signal Inc.
    Inventor: Chin-Hsiung Chang
  • Electroless plating of substrates
    Patent number: 5292557
    Abstract: Electroless deposition of copper from solution onto a substrate, particularly a polymeric laminate for use in electronic circuitry, is accomplished by first treating said substrate with a stilbene-based fluorescent brightener to sensitize said substrate and thereafter contacting said substrate with an electroless copper plating solution.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: March 8, 1994
    Assignee: Allied-Signal Inc.
    Inventor: Larry D. Olson
  • Improving the density of carbon molecular sieves for the storage of natural gas
    Patent number: 5292707
    Abstract: Natural gas is stored in a closed vessel under a pressure of about 1400 to 4500 kPa using a carbon molecular sieve adsorbent. The deliverable volume of natural gas from a vessel packed with carbon molecular sieve particles is increased by raising the density of the polymer precursor of the carbon molecular sieve through adjustment of the conditions for suspension polymerization of vinylidene chloride.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: March 8, 1994
    Assignee: Allied-Signal Inc.
    Inventors: Luis M. Aparicio, Scott R. Keenan, Li Wang
  • Preparing carbon molecular sieves of increased density
    Patent number: 5292706
    Abstract: Natural gas is stored in a closed vessel under a pressure of about 1400 to 4500 kPa using a carbon molecular sieve adsorbent. The deliverable volume of natural gas from a vessel packed with carbon molecular sieve particles is increased by impregnating a polymer precursor of the carbon molecular sieve with additional monomers and polymerizing the monomers before carbonizing the precursor.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: March 8, 1994
    Assignee: Allied-Signal Inc.
    Inventors: Chin-Hsiung Chang, Li Wang, Mark Kaiser
  • Catalyst for destruction of organohalogen compounds
    Patent number: 5292704
    Abstract: This application relates to a catalyst and a process using this catalyst to convert or destroy organic compounds including organohalogen compounds. A preferred catalyst contains as catalytic components titania, vanadium oxide, tungsten oxide, tin oxide and at least one noble metal selected from the group consisting of platinum, palladium and rhodium, characterized in that the vanadium oxide, tungsten oxide and noble metals are uniformly dispersed on the titania. The process of this invention comprises contacting the gas stream, which contains organohalogen compounds and other organic compounds, at a temperature of about 200.degree. to about 500.degree. C. with the catalyst described above in the presence of an oxidizing agent and water. The oxidizing agent can be oxygen or air.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: March 8, 1994
    Assignee: Allied-Signal Inc.
    Inventor: George R. Lester
  • Preparation of vinyl ether terminated polyesters
    Patent number: 5286835
    Abstract: Vinyl ether terminated ester oligomers having a range of molecular weights are prepared by reacting a vinyl ether terminated polybasic ester with a polyol in the presence of a catalyst. Continual removal of a hydroxy monovinyl ether avoids formation compounds containing acetal moieties. Alternatively, a polybasic ester is chain extended with a polyol with continual removal of the alcohol by-product. Then, the terminal ester moieties are end capped with a monohydroxy vinyl ether. The oligomers have application in coatings and the like.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: February 15, 1994
    Assignee: Allied-Signal Inc.
    Inventors: George D. Green, James R. Snyder, Darryl K. Barnes
  • Laminate board possessing improved dimensional stability
    Patent number: 5273816
    Abstract: A laminate which has improved dimensional stability may be prepared by impregnating a reinforcing substrate such as a woven glass cloth with an epoxy resin system having a relatively high molecular weight, in excess of about 850, in the presence of a curing agent followed by curing, pressing and post-baking substrate to form the desired laminate board. The variation in this dimensional stability can also be improved by utilizing a B-stage substrate which has been cured to a lower flow percentage.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: December 28, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Larry D. Olson, Maureen D. Burkhardt, Henry R. Johnson
  • Chlorine-tolerant, thin-film composite membrane
    Patent number: 5271843
    Abstract: A semipermeable membrane suitable for reverse osmosis applications is prepared by interfacially reacting on a support an aromatic polyamine containing at least three and, preferably, four aromatic nuclei with a polyfunctional amine-reactive compound such as an aromatic polyacyl halide.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: December 21, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Michael M. Chau, William G. Light, A. Xavier Swamikannu
  • Black glass ceramic from rapid pyrolysis in oxygen-containing atmospheres
    Patent number: 5266533
    Abstract: SiCxOy where x is greater than zero and up to about 2.0 and y is greater than zero and up to about 2.2 is produced from a cyclosiloxane polymer precursor by pyrolysis in the presence of oxygen by heating at a rate exceeding about 5.degree. C/min.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: November 30, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, John G. Sikonia, Stephen T. Gonczy
  • APT resins
    Patent number: 5264500
    Abstract: A thermosetting resin designated a "APT" resin is produced by a two-step procedure in which a substituted aromatic compound, preferably diphenyl ether is reacted with formaldehyde to produce an oligomeric backbone, followed by further reaction with a phenol to provide pendant phenolic groups. Finally, the resulting polymer is cyanated with a cyanogen halide.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: November 23, 1993
    Assignee: Allied-Signal Inc.
    Inventors: George D. Green, William B. Bedwell, Raymond J. Swedo
  • High flexural strength ceramic fiber reinforced silicon carboxide composite
    Patent number: 5258084
    Abstract: An improved fiber reinforced glass composite includes a carbon-coated refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: November 2, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Rober Y. Leung, Gerald T. Stranford, Stephen T. Gonczy
  • Fiber-reinforced glass composite for protecting polymeric substrates
    Patent number: 5244720
    Abstract: A protective layer for polymeric composite substrates comprises a fiber-reinforced glass composite having a refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. The black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: September 14, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, Stephen T. Gonczy, Donald E. Yuhas, David P. Groppi
  • Carbon-containing black glass monoliths
    Patent number: 5242866
    Abstract: Carbon-containing black glass compositions of matter having the empirical formula SiC.sub.x O.sub.y in which x ranges from about 0.5 to about 2.0, and y ranges from about 0.5 to about 3.0, wherein the carbon content of the black glass ranges from about 10% to 40% by weight, are prepared by pyrolysis of a cyclosiloxane polymer in a non-oxidizing atmosphere at a temperature from about 750.degree. C. to about 1400.degree. C.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: September 7, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, Stephen T. Gonczy, Ming S. Shum
  • Activation of nylon fibers for modification by UV radiation
    Patent number: 5236464
    Abstract: The stain resistance of nylon fibers is improved by attaching stainblocking compounds to the fiber surface using agents which have been grafted to the nylon using UV light and a photoactivator.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: August 17, 1993
    Assignee: Allied-Signal Inc.
    Inventors: George D. Green, Darryl K. Barnes, Lidia T. Calcaterra, Mathias P. Koljack
  • Thin-film composite membrane
    Patent number: 5234598
    Abstract: A thin-film seimpermeable composite membrane employs the reaction product of N-alkyl phenylenediamine or N,N'-dialkyl phenylenediamine and a poly acyl halide, such as trimesoyl chloride. Preferably the membrane is post-treated with an acid solution followed by an aqueous solution of polyvinyl alcohol and a buffer and/or base to improve its physical properties.
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: August 10, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Chinh N. Tran, Adrian C. Maldonado, Ratnasamy Somanathan
  • Magnetically stabilized fluidized particles in liquid media
    Patent number: 5230805
    Abstract: A method for the preparation of an ion exchange sorbent containing at least one anion exchange resin, a ferromagnetic substance, and a water permeable organic polymer binder, as well as a process for the use of said sorbent to separate removable anions from feedstreams containing said anion.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: July 27, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Stephen F. Yates, William B. Bedwell
  • Process for preparing black glass using cyclosiloxane precursors
    Patent number: 5231059
    Abstract: A process for preparing an oxidation resistant black glass having the empirical formula SiC.sub.x O.sub.y, wherein 0<x.ltoreq.2.0 and 0<y.ltoreq.2.2. The process comprises reacting cyclosiloxane monomers to effect the bonding of one vinyl carbon atom to a silicon, curing the product at not greater than 250.degree. C., and pyrolyzing at about 800.degree.-1400.degree. C. in an atmosphere containing a sufficient amount of oxygen to reduce the carbon content of the black glass to a desired level.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: July 27, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, Stephen T. Gonczy
  • Coating for protecting a carbon-carbon composite from oxidative degradation
    Patent number: 5225283
    Abstract: A process for forming a high temperature oxidation resistant coating on a carbon-carbon composite is disclosed and claimed. The process comprises applying a cyclosiloxane monomer blend containing a filler such as silicon carbide to a carbon-carbon composite, polymerizing and pyrolyzing said blend to form a filled black glass protective coating on the carbon-carbon composite.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: July 6, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Roger Y. Leung, Bryan A. Weyneth