Patents Represented by Attorney Gordon P. Becker
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Patent number: 5076340Abstract: A cast composite material is prepared from a modified aluminum-containing matrix and reinforcement particles mixed into the matrix. From about 15 to about 130, preferably from about 20 to about 50, parts per million of an element, preferably beryllium, that forms a more stable oxide than magnesium oxide is included in the matrix alloy. The stable-oxide-forming element reduces the amount and thickness of the aluminum oxide and other oxides formed at the surface of the melt, which otherwise may be mixed into the melt to cause microstructural irregularities in the matrix of the cast composite material.Type: GrantFiled: April 30, 1990Date of Patent: December 31, 1991Assignee: Dural Aluminum Composites Corp.Inventors: Richard S. Bruski, Larry G. Hudson, Michael D. Skibo
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Patent number: 4943490Abstract: A cast composite material is prepared from a modified aluminum-containing matrix and reinforcement particles mixed into the matrix. From about 15 to about 130, preferably from about 20 to about 50, parts per million of an element, preferably beryllium, that forms a more stable oxide than magnesium oxide is included in the matrix alloy. The stable-oxide-forming element reduces the amount and thickness of the aluminum oxide and other oxides formed at the surface of the melt, which otherwise may be mixed into the melt to cause microstructural irregularities in the matrix of the cast composite material.Type: GrantFiled: August 7, 1989Date of Patent: July 24, 1990Assignee: Dural Aluminum Composites Corp.Inventors: Richard S. Bruski, Larry G. Hudson, Michael D. Skibo
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Patent number: 4786467Abstract: A method and apparatus for preparing cast composite materials of nonmetallic particles in a metallic matrix, wherein particles are mixed into a molten metallic alloy to wet the molten metal to the particles, and the particles and metal are sheared past each other to promote wetting of the particles by the metal. The mixing occurs while minimizing the introduction of gas into the mixture, and while minimizing the retention of gas at the particle-liquid interface. Mixing is done at a maximum temperature whereat the particles do not substantially chemically degrade in the molten metal during the time required for processing, and casting is done at a temperature sufficiently high that there is no solid metal present in the melt. Mixing is preferably accomplished with a dispersing impeller, or a dispersing impeller used with a sweeping impeller.Type: GrantFiled: May 1, 1986Date of Patent: November 22, 1988Assignee: Dural Aluminum Composites Corp.Inventors: Michael D. Skibo, David M. Schuster
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Patent number: 4759995Abstract: Silicon carbide particulate reinforced aluminum alloy matrix composites are formed using techniques which include agitation of a melt of aluminum alloy, containing magnesium, and silicon carbide particulates in a manner whereby the silicon carbide particles are maintained, during agitation, within the body of the melt; the agitation, which involves shearing or wiping of the particles in the liquid, is carried out under vacuum; and may involve incorporation into the melt of an additional amount of magnesium such that that amount compensates for the amount of magnesium which segregates to the carbide surfaces, and is sufficient to effect strengthening of the resulting composite. Aluminum alloy matrix composites, containing copper, are produced using similar agitation and mixing procedures, with the copper being incorporated in such a way as to discourage reaction between the copper and SiC particles.Type: GrantFiled: May 1, 1986Date of Patent: July 26, 1988Assignee: Dural Aluminum Composites Corp.Inventors: Michael D. Skibo, David M. Schuster
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Patent number: 4540437Abstract: A tin alloy powder containing up to 5% P is disclosed. Reduced sensitivity to sintering conditions is achieved by use of present alloy powder in production of sintered bronze articles. Means for controlling the growth of the article during sintering are also disclosed.Type: GrantFiled: September 25, 1984Date of Patent: September 10, 1985Assignee: Alcan Aluminum CorporationInventor: Krishnakant B. Patel
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Patent number: 4312759Abstract: A process for producing leach-resistant consolidate from the slack sludge precipitated from the flocculating of dilute aqueous latex paint waste is shown. It comprises: rapidly heating said slack sludge with agitation to a temperature which at least approaches the boiling point of the water present in said sludge; settling the resulting heated mixture into a consolidate fraction and a serum fraction; and separating said fractions. Such consolidate can be used for landfill, structural units, or dispersed as a component of a paint.Type: GrantFiled: December 12, 1980Date of Patent: January 26, 1982Assignee: SCM CorporationInventors: Joseph C. Sherwood, Brunbeck, Richard T.
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Patent number: 4310495Abstract: A low temperature (less than 800.degree. C.) process for chlorinating titaniferous material in a fluidized bed is disclosed. A porous carbon reductant having micropores with a pore diameter of less than 20 A is utilized together with conventional titaniferous materials and conventional chlorine sources to achieve reaction at the present low temperatures.Type: GrantFiled: July 2, 1980Date of Patent: January 12, 1982Assignee: SCM CorporationInventor: James P. Bonsack
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Patent number: 4289917Abstract: Alkali metal oxides of cis- and trans-2,6,6-trimethylbicyclo(3.1.1)-heptan-2-ol are surprisingly effective bases in organic reactions calling for the use of a strong base, especially those reactions wherein abstraction of a proton from attachment to a carbon atom is postulated to occur in the mechanism.Type: GrantFiled: August 17, 1979Date of Patent: September 15, 1981Assignee: SCM CorporationInventors: Bernard J. Kane, Sean G. Traynor
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Patent number: 4283347Abstract: Para-menth-1-ene-7-sulfonate salts are made by reacting .beta.-pinene with a bisulfite salt under free radical conditions.Type: GrantFiled: February 27, 1980Date of Patent: August 11, 1981Assignee: SCM CorporationInventors: Bernard J. Kane, Sean G. Traynor
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Patent number: 4279871Abstract: Vanadium impurities in chlorinated titaniferous materials are rendered easily removable by reacting said chlorinated titaniferous materials with a high surface area carbon at an elevated temperature. A process for preparing said high surface are a carbon is also described.Type: GrantFiled: June 6, 1980Date of Patent: July 21, 1981Assignee: SCM CorporationInventor: James P. Bonsack
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Patent number: 4273593Abstract: Improved soldering or brazing paste compositions comprising a metal alloy powder and a vehicle therefor have been developed. The vehicle comprises hydroxypropyl cellulose blended with glycerine and/or water further blended with a mixture of polyalkoxyalkanols. Said vehicle is totally fugitive, leaving exceptionally low residue and maintains stable viscosity during extended storage.Type: GrantFiled: January 22, 1980Date of Patent: June 16, 1981Assignee: SCM CorporationInventor: Albert J. Mastrangelo
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Patent number: 4240969Abstract: A new process for synthesizing menthofuran is disclosed. Said process comprises epoxidizing isopulegol to form the new compound isopulegol epoxide. The epoxide is then oxidized to form isopulegone epoxide which can be cyclodehydrated to form menthofuran.Type: GrantFiled: September 4, 1979Date of Patent: December 23, 1980Assignee: SCM CorporationInventors: T. L. Ho, Zia U. Din, Sean G. Traynor
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Patent number: 4240824Abstract: A boron-containing nickel or cobalt spray-and-fuse self-fluxing alloy powder contains hard precipitates of chromium boride and, optionally, chromium carbide which are internally precipitated from a melt of said alloy. Such alloy powder is made by atomizing the melt at about the temperature at which the melt is viscous.Type: GrantFiled: October 4, 1979Date of Patent: December 23, 1980Assignee: SCM CorporationInventors: Larry N. Moskowitz, Erhard Klar
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Patent number: 4240831Abstract: Disclosed is a process for improving the corrosion resistance of a stainless steel powder or compact thereof wherein said powder is produced by atomizing a melt of metals in an oxidizing environment whereby the resulting stainless steel powder is surface-enriched in silicon oxides. The process comprises adding an effective proportion of modifier metal to said melt prior to said atomization, said modifier metal selected from the group consisting of tin, aluminum, lead, zinc, magnesium, rare earth metals and like metals capable of enrichment about the surface of said resulting atomized stainless steel powder and effective under reductive sintering conditions in the depletion of said silicon oxides about said surface; and sintering said resulting atomized powder or a compact thereof under reducing conditions, said sintered powder or compact thereof being depleted in said silicon oxides and the corrosion resistance of said powder or compact thereof being improved thereby.Type: GrantFiled: February 9, 1979Date of Patent: December 23, 1980Assignee: SCM CorporationInventors: David H. Ro, Erhard Klar, Charles I. Whitman
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Patent number: 4235796Abstract: Crystallizable lipid is fractionally crystallized from a fugitive solvent therefor in a crystallization zone wherefrom a washed crystal containing slurry substantially depleted in liquid lipid is withdrawn and the crystals are separated from such washed slurry.Type: GrantFiled: September 26, 1978Date of Patent: November 25, 1980Assignee: SCM CorporationInventor: Fred R. Paulicka
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Patent number: 4224240Abstract: Para-menth-1-ene-7-sulfonate salts are made by reacting .beta.-pinene with a bisulfite salt under free radical conditions.Type: GrantFiled: April 13, 1979Date of Patent: September 23, 1980Assignee: SCM CorporationInventors: Bernard J. Kane, Sean G. Traynor
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Patent number: 4201570Abstract: A mass of fine particulates such as chlorinated by-products (often collected as "cyclone solids") from the chlorination of titaniferous material, said particulates comprising hydrolyzable metal halides, are converted to readily-handled granules by hydration and attendant agglomeration as heat and vapors evolve.Type: GrantFiled: December 10, 1976Date of Patent: May 6, 1980Assignee: SCM CorporationInventors: Steven J. Fitch, Charles A. Tanner
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Patent number: 4197168Abstract: Tall oil containing anthraquinone is fractionally distilled for producing the tall oil heads cut enriched in said anthraquinone.Type: GrantFiled: June 7, 1978Date of Patent: April 8, 1980Assignee: SCM CorporationInventor: James M. Evans
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Patent number: 4192672Abstract: A boron-containing nickel or cobalt spray-and-fuse self-fluxing alloy powder contains hard precipitates of chromium boride and, optionally, chromium carbide which are internally precipitated from a melt of said alloy. Such alloy powder is made by atomizing the melt at about the temperature at which the melt is viscous.Type: GrantFiled: January 18, 1978Date of Patent: March 11, 1980Assignee: SCM CorporationInventors: Larry N. Moskowitz, Erhard Klar
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Patent number: 4186088Abstract: An aqueous ferrous sulfate waste stream is converted into sludge and improved water effluent by a preferably ambient indoor temperature and pressure flow process comprising: turbulently mixing said stream with a substantial excess of gaseous oxygen and a small excess of impalpable calcium carbonate in a reaction zone until the iron content of said stream is virtually all sludged; classifying resulting sludge into a coarser solids fraction (a portion of which is recycled to the sludging operation) and an aqueous suspension of finer solids; and separating finer solids from such aqueous suspension. As such streams usually contain free sulfuric acid, it is desirable to first precipitate from the stream a primary gypsum product by neutralization prior to such sludging operation.Type: GrantFiled: February 13, 1978Date of Patent: January 29, 1980Assignee: SCM CorporationInventors: Steven J. Fitch, Philip R. Peeling, David J. Heiser