Patents Represented by Attorney William J. O'Brien

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  • Acetylene terminated matrix and adhesive oligomeric compositions
    Patent number: 4268654
    Abstract: A composition prepared by mixing a high Tg, acetylene-terminated phenylquinoxaline oligomer with an acetylene-substituted reactive diluent. The presence of the reactive diluent in the mixture effectively lowers the Tg of the oligomer so as to provide the composition with adequate flow for melt processing.
    Type: Grant
    Filed: October 26, 1979
    Date of Patent: May 19, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Fred E. Arnold, Bruce A. Reinhardt
  • Laser resistant ceramic composite
    Patent number: 4268562
    Abstract: A hot pressed, biaxially oriented, alumina fiber reinforced, ceramic composite having alternate layers of parallel running alumina fibers within a glass matrix such that the fibers of one layer are positioned at right angles to the fibers of any adjoining layer.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: May 19, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: James F. Bacon, Karl M. Prewo
  • Continuous wave chemically pumped atomic iodine laser
    Patent number: 4267526
    Abstract: CW laser action achieved on the .sup.2P 178-.sup.2P 3/2 transition of the iodine atom by energy transfer from the .sup.1 .DELTA. metastable state of O.sub.2. The effluent from a conventional oxygen generator was mixed with molecular iodine at the entrance of a longitudinal flow laser cavity where the I.sub.2 was dissociated by a small amount of O.sub.2 (.sup.1 .SIGMA.) that was present in the flow due to energy pooling processes. The measured output power was greater than 4mW.
    Type: Grant
    Filed: April 13, 1979
    Date of Patent: May 12, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: William E. McDermott, David J. Benard, Nicholas R. Pchelkin, Ronald R. Bousek
  • Fluorine-containing benzimidazoles
    Patent number: 4267348
    Abstract: Benzimidazoles substituted in the 2-position with a perfluoroalkyleneether radical. The compounds are useful as antirust and anticorrosion additives in grease formulations based on fluorine-containing fluids.
    Type: Grant
    Filed: December 4, 1979
    Date of Patent: May 12, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Christ Tamborski, John B. Christian
  • Polyphenyl ether compounds
    Patent number: 4263461
    Abstract: Acetylene-substituted aromatic ethers having very low glass transition temperatures. The compounds are useful as reactive diluents for high Tg, acetylene-terminated phenylquinoxaline oligomers. When mixed with the oligomers, the resulting compositions have a lowered Tg and the necessary flow for melt processing.
    Type: Grant
    Filed: October 26, 1979
    Date of Patent: April 21, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Bruce A. Reinhardt, Fred E. Arnold
  • Composite structures
    Patent number: 4255478
    Abstract: A composite structure is fabricated from fiber-reinforced tape, segments of the tape being stacked one upon another so as to form a plurality of plies. A boron fiber is positioned adjacent to or along an edge of each of the tape segments. Because of the X-ray opacity of the boron fiber's tungsten boride core and because the boron fiber will break when a ply is damaged, damage to the composite structure can be detected by radiographic examination.
    Type: Grant
    Filed: March 14, 1979
    Date of Patent: March 10, 1981
    Assignee: The United States of American as represented by the Secretary of the Air Force
    Inventor: Robert L. Crane
  • Gas generating system for chemical lasers
    Patent number: 4246252
    Abstract: A method for generating electronically excited oxygen by efFecting a chemical reaction between chlorine and basic hydrogen peroxide.
    Type: Grant
    Filed: April 13, 1979
    Date of Patent: January 20, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: William E. McDermott, David J. Benard, Nicholas R. Pchelkin, Ronald R. Bousek
  • Self biased ferrite resonators
    Patent number: 4243697
    Abstract: A method for preparing M-type hexagonal ferrite single crystals for use as self-biased ferrite resonators. M-type (BaO.6Fe.sub.2 O.sub.3) ferrite crystals are grown on a [111] Mg (In, Ga).sub.2 O.sub.4 substrate using liquid phase epitaxial techniques. The substrate is immersed into a solute of (BaO, Fe.sub.2 O.sub.3 and ZnO) dissolved in a molten flux of molten (BaO and B.sub.2 O.sub.3) maintained in a supersaturated condition.
    Type: Grant
    Filed: March 14, 1979
    Date of Patent: January 6, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Howard L. Glass, Jiin-Herny W. Liaw, Tsutumo Kobayashi
  • Method for the preparation of alkali metal salts of dinitromethane
    Patent number: 4233249
    Abstract: A method for synthesizing the alkali metal salts of dinitromethane by effecting the direct nitration of methyl malonate followed by the step of saponifying the nitrated reaction product.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: November 11, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Vytautos Grakauskas
  • Process for synthesizing the alkali metal salts of dinetromethane
    Patent number: 4233250
    Abstract: A process for synthesizing the alkali metal salts of dinitromethane by effecting the saponification of methyl cyanodinitroacetate previously prepared by the nitration of methyl cyanooximinoacetate.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: November 11, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Vytautos Grakauskas
  • Submissile disposal system
    Patent number: 4231293
    Abstract: A system for dispersing submissiles from a cluster type weapons system comprising a multiplicity of hex-peaks cylindrical submissiles which have interstitial spaces between adjacent submissiles filled with a cylindrically shaped explosive charge.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: November 4, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: C. James Dahn, Douglas R. Morita, Allen J. Tulis
  • High piezoelectric coupling X-cuts of lead potassium niobate, Pb.sub.2 Knb.sub.5 O.sub.15 , for surface acoustic wave applications
    Patent number: 4232240
    Abstract: A series of lead potassium niobate substrates having X-cut crystallographic orientations defined by the Euler Angles Lambda=90.0.degree., Mu=90.0.degree. and Theta from -10.6.degree. to +10.6.degree..
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: November 4, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Robert M. O'Connell
  • Lead potassium niobate substrate member for surface acoustic wave applications
    Patent number: 4224549
    Abstract: A lead potassium niobate substrate having a singly rotated cut of the Z axis cylinder with a crystallographic orientation defined by the Euler Angles Lambda=74.4.degree., Mu=90.0.degree. and Theta=0.0.degree..
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: September 23, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Robert M. O'Connell
  • Singly rotated cut of Y-axis boule lead potassium niobate, Pb.sub.2 KNb.sub. O.sub.15, for surface acoustic wave applications
    Patent number: 4224548
    Abstract: A lead potassium niobate substrate having a Y-axis boule crystallographic orientation defined by the Euler Angles Lambda=90.0.degree., Mu=66.6.degree. and Theta=0.0.degree..
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: September 23, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Robert M. O'Connell
  • Synthesis of fluorocarbon esters
    Patent number: 4216338
    Abstract: A method for synthesizing perfluoroesters by effecting a reaction at subambient temperatures between a perfluorocarbon acid, or its derivatives, and a halogen fluorosulfate to produce an intermediate perfluoroacyl hypohalite which in turn is reacted with a suitable olefinic reactant to produce a perfluoroester.
    Type: Grant
    Filed: June 8, 1979
    Date of Patent: August 5, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Carl J. Schack, Karl O. Christe
  • Fretting fatique inhibiting method for titanium
    Patent number: 4215181
    Abstract: A method for inhibiting the effects of fretting fatique in a pair of opposed titanium alloy mated surfaces through the use of a copper shim insert positioned between and in contact with the mated surfaces.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: July 29, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Robert K. Betts
  • Fluorine generator for chemical lasers
    Patent number: 4213102
    Abstract: A system for generating fluorine for use as a gaseous reactant in a chemical laser from a storable gas supply of NF.sub.3.
    Type: Grant
    Filed: March 21, 1978
    Date of Patent: July 15, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Walter R. Warren, Jr., Donald A. Durran, Donald J. Spencer
  • Copper (II) chloride-tetrachloroaluminate battery
    Patent number: 4207388
    Abstract: A pelletized, light weight, thermal battery having copper (II) chloride and an alkali tetrachloroaluminate as electrolytic components.
    Type: Grant
    Filed: November 29, 1978
    Date of Patent: June 10, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John K. Erbacher, Charles L. Hussey, Lowell A. King
  • Rabbit immunoglobulin-N-(3-pyrene)-maleimide conjugate for fluorescent immunoassay
    Patent number: 4207075
    Abstract: A fluorometric technique which uses a detecting fluorophore for determining the quantitative levels of human immunoglobulin. The detecting fluorophore is an N-(3-pyrene)-maleimide conjugated immunoglobulin which shows enhanced quantum yield in the presence of human immunoglobulin molecules. Measuring the resulting changes in fluorescent emission determines the concentration level of the human immunoglobulin present in a test sample since the induced changes in fluorescence are directly proportional to the protein concentration.
    Type: Grant
    Filed: August 8, 1978
    Date of Patent: June 10, 1980
    Inventor: Robert P. Liburdy
  • Carbon/carbon composite for re-entry vehicle applications
    Patent number: 4201611
    Abstract: A fine textured, high density, three directional, carbon-carbon fiber composite material with an axially to laterally oriented fiber ratio of 1.5 to 1 or higher and a density of 185 g/cm.sup.3 or higher.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: May 6, 1980
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Edward R. Stover