Patents Examined by Mark A. Forman
  • Patent number: 5200263
    Abstract: A puncture and cut resistant composite material comprising at least one elastomeric layer containing a plurality of flat platelets oriented substantially parallel to the plane of the elastomeric layer, wherein each of the platelets is a small, thin element substantially impervious to normally encountered puncturing and/or cutting by sharp objects, and wherein the platelets by their mutual overlap substantially cover any surface to which the composite material may be applied. This new composite material is particularly well-suited to the formation of gloves.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: April 6, 1993
    Inventors: Arnold S. Gould, Larry D. Nichols
  • Patent number: 5198137
    Abstract: An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core component is provided. The iron powder mixture is formulated with up to about 1% by weight of boron nitride which reduces the stripping and sliding die ejection pressures during high temperature molding and also improves the permeability of the magnetic part over an extended frequency range.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: March 30, 1993
    Assignee: Hoeganaes Corporation
    Inventors: Howard G. Rutz, Christopher Oliver, Brooks Quin
  • Patent number: 5196263
    Abstract: A rubber article formed from a rubber composition having a rubber component is provided wherein the article has a texture coating thereon. A texture coating mixture is formed from a mixture of a rubber composition having a rubber component substantially the same as employed to form the rubber article, and rubber particles also having a rubber component substantially the same as that of the rubber article. A method of forming a rubber article is also provided which includes coating a rubber article with such a texture coating mixture.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: March 23, 1993
    Assignee: H & M Rubber Company, Inc.
    Inventors: Dennis W. Melby, James C. Moore
  • Patent number: 5192620
    Abstract: A metallized film combination of an oriented polymeric substrate layer having on one surface thereof a coating of a blend of (a) a vinyl alcohol homopolymer or copolymer and (b) an ethylene-acrylic acid copolymer, the coating blend having a metal layer thereon. The method involves coating the substrate after the substrate has been machine direction oriented and before the combination is transverse direction oriented followed by TD orientation and finally by depositing a metal layer on the blend surface.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: March 9, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Shaw-Chang Chu, James A. Johnson
  • Patent number: 5188898
    Abstract: Ferromagnetic metal particles the surface layer of which comprises laminatedly covered films of a ferrite compound having a spinel structure of at least one metal selected from cobalt, zinc, manganese, aluminum, chromium, nickel and copper and iron and a preparation process thereof.The particles can be used as a high density magnetic recording medium.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: February 23, 1993
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kimiteru Tagawa, Seiichi Takahashi, Noritoshi Utsuno, Hideki Umehara, Fujio Hayashi, Shigeo Kiba, Satoru Suda
  • Patent number: 5185207
    Abstract: In a phosphor for a cathode-ray tube, a composition containing SiO.sub.2 and at least one element selected from the group consisting of indium, zirconium, and antimony is adhered on the surfaces of phosphor particles.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: February 9, 1993
    Assignee: Nichia Kagaku Kogyo K.K.
    Inventors: Misa Furuoka, Shoichi Bando, Akio Fujii
  • Patent number: 5185204
    Abstract: Whiskers having a diameter of 0.1-10 .mu.m and a length of 5-200 .mu.m are pelletized and granulated into agglomerates which have a size of 0.1-10 mm and a bulk density of 0.2-1.0 kg/liter.To pelletize, powders of whiskers are moistened with water while mixing to form primary aggregates. Then, the powders and the primary aggregates are subjected to a rolling movement to cause the primary aggregates to grow into secondary aggregates having desired size distribution. Finally, the secondary aggregates are dried to obtain pelletized or granulated agglomerates of whiskers.Handling of whiskers is facilitated because the agglomerates are less bulky and less likely to fly up in the air. When blended into molding materials for fiber reinforcement, however, the agglomerates are readily disintegrated back into separated individual fibers to provide homogeneous dispersion.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: February 9, 1993
    Assignee: Kawatetsu Minig Co., Ltd.
    Inventors: Tadao Shimizu, Yoshio Aso, Hidefumi Konnai
  • Patent number: 5178948
    Abstract: A pelletized form of silica which is sufficiently dust free and highly dispersible in rubber formulations. The pelletized silica is produced by a process which involves pelletizing a mixture of silica and water in an inclined mixer and drying the pelletized product in a fluidized bed dryer.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: January 12, 1993
    Assignee: J. M. Huber Corporation
    Inventor: Thomas M. Haller
  • Patent number: 5173365
    Abstract: An ultra-thin, self-assembling molecular film has thickness, length and width dimensions. Ampliphilic molecules in the film are ordered in the thickness dimension, and are arranged in crystals that are aligned in both the length and width dimensions. This molecular alignment in all three film dimensions provides a film having more uniform properties.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: December 22, 1992
    Assignee: NanoFilm Corporation
    Inventors: Brij P. Singh, Scott E. Rickert
  • Patent number: 5165997
    Abstract: In a two-component system for a hardenable material, quartz grains (1) serve as a filler material and are coated with benzoyl peroxide which forms the hardener component of the system. The benzoyl-peroxide coated quartz grains are enclosed in a protective layer of pyrogenic silicic acid. As a result, the flotation capability of the quartz granules is maintained.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: November 24, 1992
    Assignee: Hilit Aktiengesellschaft
    Inventors: Ioan Gross, Hans-Jurgen Irmscher
  • Patent number: 5165996
    Abstract: A coated refractory composition for making high quality preforms comprising a refractory material selected from a metal refractory carbide, metal refractory nitride, metal refractory boride or diamond having a coating layer of hydrous alumina or a coating layer of anhydrous crystalline alumina, and to a method for enhancing dispersibility and improving oxidation resistance of such compositions.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: November 24, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Howard W. Jacobson
  • Patent number: 5165992
    Abstract: A hard coating film is disclosed which is formed by hardening a coating composition containing the following component A and/or component B and component C:Component A:an organosilicon compound or a hydrolyzate thereof, said organosilicon compound being represented by the formula (I):(R.sup.1).sub.a (R.sup.3).sub.b Si(OR.sup.2).sub.4-(a+b) (I)Component B:an organosilicon compound or a hydrolyzate thereof, said organosilicon compound being represented by the formula (II): ##STR1## Component C: fine particles of tin oxide having a particle size of 1 to 100 millimicrons and coated with fine particles of tungsten oxide.The coating film is excellent in hot water resistance and transparency and finds particularly useful application to lenses for spectacles.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: November 24, 1992
    Assignee: Hoya Corporation
    Inventor: Eiichi Yajima
  • Patent number: 5147718
    Abstract: A radar absorber, for use as a sprayable paint, or for use as a plastic sheet, is provided. The radar absorber is used to cover a structural part of an aircraft or to shield a part of a naval vessel. The absorber, or coating in this embodiment, includes an inner layer having an elastomeric carrier material with a carbonyl iron powder dispersed therein, or disposed therein, of a regular particle size of about 4 to 5 micron, and includes an outer layer having an elastomeric carrier material with a carbonyl iron powder dispersed therein, or disposed therein, of a fine particle size of about 0.5 to 1.5 micron.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: September 15, 1992
    Assignee: ISP Investments Inc.
    Inventors: Sotiri A. Papoulias, Henry Seiwatz
  • Patent number: 5145742
    Abstract: Disclosed is a configuration for a polymer pellet having improved reactivity for solid-state polymerization and less tendency to stick during processing with heat. The pellets have a reduced path length for volatiles to travel to the exterior of the pellet, and reduced contact area in a packed condition.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: September 8, 1992
    Assignee: Eastman Kodak Company
    Inventor: Cheuk C. Yau
  • Patent number: 5139863
    Abstract: Molded article having improved thermal resistance and strength formed from a homogeneous mixture comprising from about 5 to 75 percent by weight polybenzimidazole and from about 95 to 25 percent by weight of a polyaryleneketone. These articles are obtained by injection molding techniques.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: August 18, 1992
    Assignee: Hoechst Celanese Corporation
    Inventors: Edwardo Alvarez, Lorenzo P. DiSano, Bennett C. Ward
  • Patent number: 5137783
    Abstract: Disclosed herein are acicular magnetic metal particles containing iron as the main ingredient the surfaces of which are coated with a polymer formed from at least one of silicone compounds represented by the following formula (I):(R.sup.1 HSiO).sub.a (R.sup.2 R.sup.3 SiO).sub.b (R.sup.4 R.sup.5 R.sup.6 SiO.sub.1/2)c (I)wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 respectively represent a hydrogen atom or hydrocarbon group having 1 to 10 carbon atoms which hydrocarbon group may be substituted by at least one halogen atom, a and b are respectively 0 or integers of not less than 1, and c is 0 or 2, provided that when c is 0, the sum of a and b is an integer of not less than 3 and which have a coercive force of not less than 1400 Oe, a saturation magnetization of not less than 100 emu/g, a major axial diameter of not more than 0.25 .mu.m and an S.F.D. of not more than 0.38, and a process for producing the acicular magnetic metal particles containing iron as the main ingredient.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: August 11, 1992
    Assignees: Toda Kogyo Corporation, Shiseido Company, Limited
    Inventors: Mamoru Tanihara, Yasutaka Ota, Hiroshi Fukui, Takashi Ogawa, Tsuneo Suhara
  • Patent number: 5122182
    Abstract: Two constituent powders of a powder blend for thermal spraying are in the form of composite particles containing subparticles of nickel alloy and benoite for clearance control coatings. The composite particles are formed by spray drying. In one embodiment the volume percentage of metal in one constituent powder is at least 25% greater than in the other powder. In another embodiment the difference is about 10% by volume, and the alloy rich constituent has alloy subparticles sufficiently large to act as core particles to which the finer subparticles of bentonite are bonded.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: June 16, 1992
    Assignee: The Perkin-Elmer Corporation
    Inventors: Mitch R. Dorfman, Burton A. Kushner, Anthony J. Rotolico, Brian A. DelRe, Edward R. Novinski
  • Patent number: 5112657
    Abstract: In the present invention, polymer binder systems are filled with inert fillers, such as calcium carbonate, and with specific thermoplastic microspheres bearing a surface coating of an inert particulate material compatible with the polymer binder system. The preferred inert particulate material on the microspheres is particulate or fibrous forms of calcium carbonate. The microspheres have a very low density, and the inert particulate for fibrous coating is thermally bonded to surface thereof. The microspheres may be employed in proportions up to as much as about 70 volume percent of the casting or molding composition, resulting in a product of exceptionally low weight and density.The products of the present invention also provide high impact strength, high resistance to cracking and crack propagation, high tensile and yield strength, and a high modulus of elasticity, particularly compared to the usual cast marble products known to the art.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: May 12, 1992
    Assignee: Pierce & Stevens Corporation
    Inventor: George E. Melber