Patents Assigned to Norton Company
  • High temperature ceramic composite
    Patent number: 5306565
    Abstract: A composite ceramic structure which does not fail catastrophically and thus is useful as a ceramic rolling contact bearing assembly is disclosed. The structure is a ceramic monolith bonded through an interlayer to a fiber-reinforced ceramic body. The structure is useful at elevated temperatures.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: April 26, 1994
    Assignee: Norton Company
    Inventors: Normand D. Corbin, Brad J. Miller, Kazimierz Sawicki, John W. Lucek, James G. Hannoosh
  • Electronic circuit and method with thermal management
    Patent number: 5300810
    Abstract: The disclosure is directed to an improved circuit and method which utilizes a plurality of generally planar diamond substrate layers. Electronic circuit elements are mounted on each of the substrate layers, and the substrate layers are disposed in a stack. Heat exchange means can be coupled generally at the edges of the substrate layers. In a disclosed embodiment, a multiplicity of generally planar diamond substrate layers and a multiplicity of generally planar spacer boards are provided. Each of the substrate layers has mounted thereon a multiplicity of electronic elements and conductive means for coupling between electronic elements. In general, at least some of the electronic elements on the substrate layers comprise integrated circuit chips. The substrate layers and spacer boards are stacked in alternating fashion so that spacer boards are interleaved between adjacent substrate layers.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: April 5, 1994
    Assignee: Norton Company
    Inventor: Richard C. Eden
  • Composite abrasive wheels
    Patent number: 5290903
    Abstract: A composite abrasive wheel with improved thermal properties is comprised of a fibrous substrate with abrasive particles adhered thereto by a crosslinked polyurethane binder comprising heterocyclic groups. The heterocyclic structures, such as isocyanurate and/or oxazolidone rings, in the binder system improve the thermal properties required for a tough, durable abrasive wheel.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: March 1, 1994
    Assignee: Norton Company
    Inventors: Shyiguei Hsu, Michael P. Brock
  • Coated abrasive having combination backing member
    Patent number: 5286541
    Abstract: Coated abrasive material having a combination backing member. The combination backing member has as a bottom member a conventional backing member substrate used in the manufacture of coated abrasive material such as cylinder paper coated with a polymeric layer. The polymer layer provides a relatively smooth surface for application of the maker coat during manufacture of the coated abrasive material. The coated abrasive member can be used in diverse applications such as the fine finishing of particle board and offhand grinding of automobile body seams.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: February 15, 1994
    Assignee: Norton Company
    Inventors: Dhiraj H. Darjee, Richard W. Kalita, Gregg M. Bosak, Eugene Zador, William F. McCutcheon
  • Non-porous diffusion furnace components
    Patent number: 5283089
    Abstract: Components for semiconductor diffusion furnaces are constructed of a high purity impervious silicon carbide or silicon nitride matrix deposited onto and within a pre-shaped fibrous matrix of silicon carbide or silicon nitride which contains sufficient nucleation aids to produce a structure having a density greater than about 85% of theoretical density. The impregnation of the matrix material into the fibrous reinforcement prevents undesired gaseous components from contaminating the atmosphere of the furnace, and the fibrous reinforcement provides strength combined with light weight.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: February 1, 1994
    Assignee: Norton Company
    Inventor: Carl H. Bates
  • Moisture cured elastomeric interpenetrating network sealants
    Patent number: 5250607
    Abstract: An interpenetrating polymer system prepared from a mixture of a moisture-cured prepolymer component and an elastomeric component which is non-reactive with the prepolymer component, wherein exposure of the mixture to ambient moisture cures the prepolymer component entrapping the elastomeric component and forming a product which is essentially thermoset. The product may be essentially non-foamed or highly foamed and and either tack-free or self-adhesive. It is particularly suitable for use as sealing gaskets, sheet stock, tubing, and as sealant-encapsulants.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: October 5, 1993
    Assignee: Norton Company
    Inventors: Ahmet Comert, Michel Ladang, Dominique Petit
  • Sintered sol gel alumina abrasive filaments
    Patent number: 5244477
    Abstract: A process is described for the production of bonded abrasive products in which the abrasive particles are filamentary alumina particles with a substantially uniform cross-section and an aspect ratio of at least about 1:1.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: September 14, 1993
    Assignee: Norton Company
    Inventors: Charles V. Rue, Ronald H. van de Merwe, Ralph Bauer, Scott W. Pellow, Thomas E. Cottringer, Richard J. Klok
  • Pulpstone
    Patent number: 5243789
    Abstract: A segmental grinding stone, particularly a pulpstone, wherein the segments are assembled to a ring or central support portion through a bolt which passes through a recessed hole in the face of the segment and screws into a nut means.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: September 14, 1993
    Assignee: Norton Company
    Inventor: Dan D. Bacic
  • Laminated diamond substrate
    Patent number: 5244712
    Abstract: A synthetic diamond wafer grown by deposition from a plasma has a smooth, substrate side face and a rough, deposition side face. The rough face is coated with a bonding agent which fills the valleys and is finished so that its surface is parallel to the substrate side face to permit photolithographic processing of the wafer. Also disclosed is a multi-wafer laminate of two or more diamond film layers bonded together with an interlayer. Smooth, flat outer faces of the layers are oriented mutually parallel. The inner, bonded faces may be rough. A filler of diamond particles in the bonding agent improves the thermal conductivity of the laminate.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: September 14, 1993
    Assignee: Norton Company
    Inventor: Richard C. Eden
  • Method of fabricating electronic circuits
    Patent number: 5239746
    Abstract: The use of a conductive reactive braze material, loaded in via holes of a diamond substrate and heated in a suitable temperature range, results in conductive vias with excellent adherence to the via hole in the diamond material. Cracking of the diamond substrate, and loose or lost via elements, are minimized. A form of the disclosure is directed to a method for producing a circuit board having a multiplicity of conductive vias. A generally planar diamond substrate is provided. A multiplicity of via holes are formed through the substrate. The holes are loaded with a conductive reactive braze material. The braze material and the substrate are heated to a temperature which causes the braze material to melt and to react with the inner surface of the via holes and bond thereto.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: August 31, 1993
    Assignee: Norton Company
    Inventor: Paul D. Goldman
  • Pressure casting ceramic slurries
    Patent number: 5229339
    Abstract: Aqueous suspensions of ceramic particles in which the particle are coated by a metal oxide sintering aid or metal hydroxide precursor thereto and which have a sufficiently high solids content to produce casting slips which can yield net shape castings are provided. The suspensions are produced by concentrating lower solids content suspensions by crossflow filtration which disrupts hydroxide gels which inherently form by interaction of the coating with water. The resultant highly loaded aqueous suspensions may be used in net shape casting to produce cast bodies of high dimensional stability, high green strength, and with a low incidence of cracking.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: July 20, 1993
    Assignee: Norton Company
    Inventors: Vimal K. Pujari, Craig A. Willkens, Ajay K. Garg
  • High solids content gels and a process for producing them
    Patent number: 5227104
    Abstract: A method is described for producing hard, dense, finely crystalline fired bodies from alumina gels of solids content greater than 45%, by the use of high pressure in mixing and/or presssure extrusion together with seeding of the gel by submicron alpha alumina particles.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: July 13, 1993
    Assignee: Norton Company
    Inventor: Ralph Bauer
  • Diamond having multiple coatings and methods for their manufacture
    Patent number: 5224969
    Abstract: A diamond element having good bonding properties and a method for fabricating the diamond element in which a diamond substrate is coated by and bonded to a first layer of chromium carbide, a second layer containing titanium, vanadium, zirconium, niobium, tantalum, iron, cobalt, nickel or copper, is bonded to said first layer, and a third layer of tungsten, or molybdenum deposited by a CVD technique utilizing metal halides, is bonded to said second layer. The second layer functions to protect the chromium carbide layer against attack by halide containing gas during the CVD deposition of the tungsten, or molybdenum.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: July 6, 1993
    Assignee: Norton Company
    Inventors: Sy-Hwa Chen, Jeffrey S. Hansen
  • Device for the sagger-less burning of crockery
    Patent number: 5222890
    Abstract: The present invention relates to a device for the sagger-less burning of crockery comprising setting plates (2) and individual supports (1) which are designed as separate components from the setting plates (2), each printer's bit (2) being supported by two individual supports (1) and the ratio of the number of setting plates to the number of individual supports being 1:1.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: June 29, 1993
    Assignee: Norton Company
    Inventor: Hans Payr
  • Grinding aid formulations
    Patent number: 5221295
    Abstract: Coated abrasives provided with a coating comprising a grinding aid and a binder resin are particularly effective when the grinding aid is an halogenated hydrocarbon.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: June 22, 1993
    Assignee: Norton Company
    Inventor: Eugene Zador
  • Process of producing self-bonded ceramic abrasive wheels
    Patent number: 5221294
    Abstract: A grinding tool is described which comprises self-bonded particles of a ceramic abrasive and has a voids volume of from 5 to 65%.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: June 22, 1993
    Assignee: Norton Company
    Inventors: Lee A. Carman, William S. Coblenz, Janet L. Hammarstrom
  • Sol-gel alumina abrasive grain
    Patent number: 5215552
    Abstract: A sol-gel alumina abrasive grain with valuable grinding characteristics is obtained by inducing microcracking in the grain surfaces.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: June 1, 1993
    Assignee: Norton Company
    Inventor: Jason Sung
  • Bonding tool and its fabrication
    Patent number: 5213248
    Abstract: The disclosure is directed to a bonding tool for use primarily in thermo-compression bonding of electronic circuit components and to a method of making the bonding tool. In one form of the disclosure, a holder is provided and has a substrate mounted at an end thereof. The holder is adapted to receive a heating element. A polycrystalline diamond film is disposed on the substrate, the film preferably being deposited by chemical vapor deposition. In a disclosed embodiment the substrate is a material selected from the group consisting of polycrystalline diamond, cemented tungsten carbide, silicon carbide, cubic boron nitride, and tungsten. In a further form of the disclosure, a ceramic substrate is provided which has a favorable thermal conductivity property as well as substantial electrical conductivity sufficient to permit shaping by electrical discharge machining ("EDM").
    Type: Grant
    Filed: January 10, 1992
    Date of Patent: May 25, 1993
    Assignee: Norton Company
    Inventors: Ralph M. Horton, James T. Hoggins, Shih-Yee Kuo
  • High porosity vitrified bonded grinding wheels
    Patent number: 5203886
    Abstract: Vitrified bonded abrasive bodies prepared from sol-gel sintered aluminous grit particles, a vitreous bond, bubbled alumina, and a sacrificial organic material exhibit improved abrasive performance, especially for creepfeed grinding products.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: April 20, 1993
    Assignee: Norton Company
    Inventors: David A. Sheldon, Carole J. Markhoff-Matheny, Renato Terragni
  • Bonding adjuvants for vitreous bond formulations and process for bonding with
    Patent number: 5203882
    Abstract: The use of small amount of silica sol in conjunction with an organic binding agent significantly increases the strength of the bond in a vitreous bonded alumina containing abrasive wheel.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: April 20, 1993
    Assignee: Norton Company
    Inventors: Lee A. Carman, Xiaoming Li