| Patent Number |
Title Of Patent |
Date Issued |
| 5490870 |
Amalgamable composition and method of production |
February 13, 1996 |
| A multi-component composition suitable for amalgamation with mercury to form a dental amalgam, an amalgam and a method for producing such a multi-component composition. The multi-component composition has: from 30 to 90% (by weight) of a first component containing at least 30% silver, at |
| 5451244 |
High strain rate deformation of nickel-base superalloy compact |
September 19, 1995 |
| A process for preparing a consolidated nickel-base superalloy compact suitable for tensile force inducing high strain rate deformation. It includes the steps of: preparing a melt of a nickel-base superalloy in a vacuum; atomizing the melt into powder in a protective atmosphere; colle |
| 5396986 |
Mixing capsule having three tubular members |
March 14, 1995 |
| A mixing capsule for mixing a first material with a second material, and in particular, a capsule in which the materials are kept separated and brought together only at the time they are to be mixed. The capsule is characterized by a pierceable partition which separates the materials to |
| 5354353 |
Amalgamable composition and method of production |
October 11, 1994 |
| A multi-component composition suitable for amalgamation with mercury to form a dental amalgam, an amalgam and a method for producing such a multi-component composition. The multi-component composition has: from 30 to 90% (by weight) of a first component containing at least 30% silver, at |
| 5185125 |
Dental alloy and amalgam thereof |
February 9, 1993 |
| A dental alloy having, upon amalgamation, a desirable combination of physical properties and both a desirable condense time and carve time. The alloy contains from 48.75 to 50.75% silver, 20.25 to 21.75% copper, 28.25 to 29.25% tin, 0.05 to 0.8% palladium and up to 2.7% of elements selec |
| 5103458 |
Electric arc remelting |
April 7, 1992 |
| A process for casting an ingot of pre-alloyed metal from a consumable electrode. It includes the steps of: providing a consumable electrode corresponding to the desired metallurgical composition of the to-be-cast ingot; providing a second electrode; striking an arc between the consum |
| 4808225 |
Method for producing an alloy product of improved ductility from metal powder |
February 28, 1989 |
| A process for producing an alloy product of improved ductility from metal powder. It includes the steps of: providing metal powder having at least 5 wt. % of one or more reactive elements from the group consisting of titanium, aluminum, hafnium, niobium, tantalum, vanadium and zirconium; |
| 4664855 |
Method for producing amalgamable alloy |
May 12, 1987 |
| A process for manufacturing an atomized amalgamable alloy having mold adaptation characteristics superior to other atomized alloys and comparable or better than those for ad-mixed type alloys (alloys which are mixtures of spherical and irregularly shaped particles), and physical prop |
| 4629521 |
Nickel base alloy |
December 16, 1986 |
| A gamma prime strengthened nickel-base alloy characterized by a highly desirable combination of stress rupture life, hot corrosion resistance, oxidation resistance, phase stability and ductility. The alloy contains from 14 to 18% chromium, from 0.3 to 3% molybdenum, from 4 to 8% tungsten |
| 4374085 |
Silver-tin-copper-palladium alloy and amalgam thereof |
February 15, 1983 |
| A silver-tin-copper-palladium alloy containing from 30 to 70% silver, 15 to 37% tin, at least 13% copper and from 0.05 to 0.95% palladium; and an amalgam thereof. |
| 4310354 |
Process for producing a shape memory effect alloy having a desired transition temperature |
January 12, 1982 |
| A process for producing a shape memory effect alloy having a desired transition temperature. The process includes the steps of: providing at least one prealloyed powder of a shape memory effect alloy having a chemistry similar to that of the to be produced alloy and a transition temp |
| 4264062 |
Apparatus for melting and feeding metal at a controlled rate and temperature |
April 28, 1981 |
| An apparatus for feeding molten metal at a substantially constant rate of at least 3 pounds per minute is disclosed. This apparatus includes a receptacle for holding a maximum volume of molten metal therein, a heater to maintain the metal in a molten state, and an overflow runner through |
| 4261412 |
Fine grain casting method |
April 14, 1981 |
| A method for fine grain casting prealloyed metal comprising the steps of providing first and second electrodes within an enclosed chamber, said first and second electrodes being spaced so as to form a gap between them, at least one of said electrodes being an ingot having a composition |
| 4253885 |
Treating nickel base alloys |
March 3, 1981 |
| A method of heat treating and coating a nickel base alloy containing chromium, titanium, aluminum, cobalt, molybdenum, tungsten, boron and carbon. The alloy is heated at a temperature of at least 2050.degree. F. to put most of the coarse gamma prime particles into solution; coated; t |
| 4253884 |
Treating nickel base alloys |
March 3, 1981 |
| A method of heat treating and coating a nickel base alloy containing chromium, titanium, aluminum, cobalt, molybdenum, tungsten, boron and carbon. The alloy is heated at a temperature of at least 2050.degree. F. to put most of the coarse gamma prime particles into solution; treated w |
| 4219361 |
Method of improving the susceptibility of a material to microwave energy heating |
August 26, 1980 |
| The susceptibility of a material to heating by exposure to microwave energy which material has slight or no such susceptibility is improved by mixing it in granular form with a microave reactive agent also in granular form which is capable of substantially responding to microwave energy. |
| 4212665 |
Decarburization of metallic alloys |
July 15, 1980 |
| An improvement in the manufacture of metallic alloys, and particularly in that stage of production wherein the alloy is decarburized. By adding an oxide of an element of the alloy being produced to the melt-down charge or to the melt, along with a flux which lowers the melting point of t |
| 4190437 |
Low thermal expansion nickel-iron base alloy |
February 26, 1980 |
| A castable nickel-iron base alloy suitable for high temperature service and characterized by low thermal expansion and freedom from notch sensitivity and deleterious microshrinkage in castings. The alloy consists essentially of at least 16% nickel, at least 10% cobalt, up to 5% columbium |
| 4156053 |
Method of making oxide dispersion strengthened powder |
May 22, 1979 |
| A process for preparing metal having a substantially uniform dispersion of hard filler particles. The process includes the steps of: admixing particles of a first metallic component with oxide particles having a negative free energy of formation at 1000.degree. C. of at least as great |
| 4140887 |
Method for microwave heating |
February 20, 1979 |
| An object responsive to microwave energy is enclosed in a thermally insulated enclosure which is substantially transparent to microwave energy and is heated by microwave energy passing through the enclosure. The apparatus includes a chamber which supports the magnetron radiators and |
| 4111685 |
Dispersion-strengthened cobalt-bearing metal |
September 5, 1978 |
| Oxide dispersion-strengthened metal having from 18 to 35% chromium, 3 to 7% aluminum, 0.2 to 3.0% of an oxide dispersoid, 10 to 45% nickel and at least 30% cobalt. The oxide dispersoid has a negative free energy of formation at 1000.degree. C of at least as great as that of aluminum |
| 4093476 |
Nickel base alloy |
June 6, 1978 |
| A gamma prime strengthened nickel base alloy characterized by good hot corrosion resistance, strength, creep resistance, phase stability and stress rupture life. The alloy consists essentially of, by weight, from 12.0 to 20.0% chromium, from 4.0 to 7.0% titanium, from 1.2 to 3.5% alu |
| 4083734 |
Nickel base alloy |
April 11, 1978 |
| A gamma prime strengthened nickel base alloy having a 1650.degree. F impact strength of at least 6 ft.-lbs. after 35,000 hours exposure at 1600.degree. F. The alloy consists essentially of, by weight, from 12.0 to 20.0% chromium, from 4.75 to 7.0% titanium, from 1.3 to 3.0% aluminum, |
| 4073640 |
Method of melting slag |
February 14, 1978 |
| Slag which is not electrically conductive when solid or at least at temperatures below 1500.degree. F. is melted by providing a graphite covering on top of the solid slag, contacting the covering material with at least two electrodes in spaced apart relationship, and supplying electr |
| 4063939 |
Composite turbine wheel and process for making same |
December 20, 1977 |
| A process for making a composite integral turbine wheel and the like, consisting of a plurality of blade elements of an airfoil shape connected at their inner ends to the periphery of a sintered rotor or hub and metallurgically bonded thereto. In accordance with the practice of the p |
| 4049470 |
Refining nickel base superalloys |
September 20, 1977 |
| A process for producing a low iron nickel base superalloy having a very low selenium content. The process includes the steps of: preparing a superalloy melt containing, by weight, at least 60% nickel, no more than 1% iron, and more than 0.0004% selenium; maintaining the melt in contact |
| 4010024 |
Process for preparing metal having a substantially uniform dispersion of hard filler particles |
March 1, 1977 |
| A process for preparing metal having a substantially uniform dispersion of hard filler particles. The process includes the steps of: admixing metal powder and oxide particles having a negative free energy of formation at 1000.degree. C of at least as great as that of aluminum oxide; and |
| 3980472 |
Dental amalgam |
September 14, 1976 |
| An improved metal powder blend and improved dental amalgams produced therefrom comprising a mechanical mixture containing controlled proportions of an amalgamatable silver-base alloy powder and a substantially non-amalgamatable eutectic alloy powder containing a controlled quantity o |
