Patents by Inventor Richard C. Krutenat
Richard C. Krutenat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5733611Abstract: A porous preform is densified by heating while emersed in a precursor liquid. Heating is achieved by passing a current through the preform or by an induction coil immersed in the liquid. Ways to control the densification process are also described.Type: GrantFiled: March 29, 1995Date of Patent: March 31, 1998Assignee: Textron Systems CorporationInventors: Garrett S. Thurston, Raymond J. Suplinskas, Thomas J. Carroll, Donald F. Connors, Jr., David T. Scaringella, Richard C. Krutenat
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Patent number: 5543605Abstract: Apparatus for heating a fiber using microwave energy. The apparatus has a source of microwave energy feeding and applicator. The applicator is configured to concentrate the microwave energy on a chamber holding a fiber. Fibers made or coated using chemical vapor deposition in the apparatus are also disclosed.Type: GrantFiled: April 13, 1995Date of Patent: August 6, 1996Assignee: Avco CorporationInventors: Harold D. Kimrey, Jr., William B. Snyder, Jr., Richard C. Krutenat
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Patent number: 5442160Abstract: Apparatus for heating a fiber using microwave energy. The apparatus has a source of microwave energy feeding and applicator. The applicator is configured to concentrate the microwave energy on a chamber holding a fiber. Fibers made or coated using chemical vapor deposition in the apparatus are also disclosed.Type: GrantFiled: January 22, 1992Date of Patent: August 15, 1995Assignee: Avco CorporationInventors: Harold D. Kimrey, Jr., William B. Snyder, Jr., Richard C. Krutenat
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Patent number: 5389152Abstract: A porous preform is densified by heating while emersed in a precursor liquid. Heating is achieved by passing a current through the preform or by an induction coil immersed in the liquid. Ways to control the densification process are also described.Type: GrantFiled: October 9, 1992Date of Patent: February 14, 1995Assignee: Avco CorporationInventors: Garrett S. Thurston, Raymond J. Suplinskas, Thomas J. Carroll, Donald F. Connors, Jr., David T. Scaringella, Richard C. Krutenat
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Patent number: 5200145Abstract: The present invention relates to a novel process for producing silicon and/or aluminum containing iron alloy product as well as the material produced from same in either sheet or bulk structure form for electromagnetic circuit application. The process entails modifying an iron feedstock containing less than about 2.5 wt % silicon, aluminum or a combination thereof. The process further consists of diffusion of silicon or silicon and aluminum or aluminum into an iron feedstock by a pack diffusion or a chemical vapor deposition method in which the iron feedstock is heated to a temperature at which diffusion occurs in the presence of a pack containing silicon and/or aluminum sources, a reducing agent, a catalyst, and a filler, or in the presence of a flowing gas stream containing a volatile silicon compound. The resulting iron alloy product, which has a silicon content in the range of 0.Type: GrantFiled: July 12, 1991Date of Patent: April 6, 1993Assignee: Exxon Research and Engineering Co.Inventors: Richard C. Krutenat, Robert S. Barnard, John P. Dismukes, Bernard H. Kear, Horst Witzke
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Patent number: 4904500Abstract: A process for diffusing silicon into iron or iron alloy by heating the iron or iron alloy with silica and a suitable reducing agent in the presence of a catalyst.Type: GrantFiled: October 11, 1988Date of Patent: February 27, 1990Assignee: Exxon Research and Engineering CompanyInventor: Richard C. Krutenat
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Patent number: 4835010Abstract: A process for the co-diffusion of aluminum and other elements into austenitic steel which includes heating the steel to a temperature at which co-diffusion occurs in the presence of a source of aluminum, a catalyst and metallic or metalloid elements having substantial solubility in ferrite (bcc phase of iron or iron alloy) so that a microstructure is formed on the steel which is a single layer composite and which includes a fine dispersion of compatible aluminide particles in a continuous ductile ferrite matrix.Type: GrantFiled: June 8, 1987Date of Patent: May 30, 1989Assignee: Exxon Research and Engineering CompanyInventors: Richard C. Krutenat, Narasimha-Rao V. Bangaru
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Patent number: 4532191Abstract: A high temperature oxidation resistant alloy of MCrAlY, where M is a base metal comprising iron, cobalt, nickel or a combination thereof, is formed by laser cladding of a coating layer to a substrate.Type: GrantFiled: June 27, 1984Date of Patent: July 30, 1985Assignee: Exxon Research and Engineering Co.Inventors: Michael J. Humphries, Chih-an Liu, Richard C. Krutenat
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Patent number: 4500364Abstract: A method of coating metal substrates with a protective aluminum-silicon coating comprising a mixture of (1) an Al-Si eutectic, Al-Si hypereutectic or elemental aluminum and (2) elemental silicon, the articles of manufacture provided by said coating and the method of carrying out thermal hydrocarbon processing operations where corrosion/erosion and other high temperature interactions are a problem using apparatus containing said coatings.Type: GrantFiled: April 23, 1982Date of Patent: February 19, 1985Assignee: Exxon Research & Engineering Co.Inventor: Richard C. Krutenat
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Patent number: 4424083Abstract: Protection of cast austenitic stainless steel tubes is provided against initiation of carburization by (a) cold-working the inner surfaces of said tubes to deform the surface to such a degree that upon the subsequent heat treatment of step (b) below, dissolution of the M.sub.23 C.sub.6 carbides in the deformed region is accompanied by recrystallization resulting in a refined micrograin structure in the deformed regions to a substantially uniform minimum depth of about 20 microns; and (b) heating the cold-worked inner surfaces of said tubes, for an effective amount of time, at a temperature between its recrystallization temperature and its melting temperature, in an atmosphere of which the oxygen partial pressure is at least oxidizing with respect to chromium.Type: GrantFiled: December 27, 1982Date of Patent: January 3, 1984Assignee: Exxon Research and Engineering Co.Inventors: Richard S. Polizzotti, Richard C. Krutenat
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Patent number: 4379745Abstract: Protection of cast austenitic stainless steel tubes is provided against initiation of carburization by (a) cold-working the inner surfaces of said tubes to deform the surface to such a degree that upon the subsequent heat treatment of step (b) below, dissolution of the M.sub.23 C.sub.6 carbides in the deformed region is accompanied by recrystallization resulting in a refined micrograin structure in the deformed regions to a substantially uniform minimum depth of about 20 microns; and (b) heating the cold-worked inner surfaces of said tubes, for an effective amount of time, at a temperature between its recrystallization temperature and its melting temperature, in an atmosphere of which the oxygen partial pressure is at least oxidizing with respect to chromium.Type: GrantFiled: November 21, 1980Date of Patent: April 12, 1983Assignee: Exxon Research and Engineering Co.Inventors: Richard S. Polizzotti, Richard C. Krutenat
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Patent number: 4248940Abstract: Adherent, thermal shock-resistant protective coatings for nickel base super alloys are obtained by applying to the base metal a thin bond coat of an alloy of chromium aluminum and yttrium with materials selected from the group consisting of iron, cobalt, nickel and nickel-cobalt and applying thereover a continuously graded mixture of this material with a zirconia-based ceramic, the concentration of zirconia-based ceramic increasing from the bond coat to the outer layer. The zirconia ceramic may be stabilized by the addition thereto of amounts of magnesium oxide or other materials.Type: GrantFiled: June 30, 1977Date of Patent: February 3, 1981Assignee: United Technologies CorporationInventors: George W. Goward, Delton A. Grey, Richard C. Krutenat
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Patent number: 4229234Abstract: A process, and the compositions produced thereby, wherein an element characterized as aluminum, silicon or chromium, notably aluminum, is alloyed in relatively small concentrations with iron, cobalt or nickel, notably iron or cobalt, or both, which have relatively high Curie temperatures. Small amounts of yttrium, hafnium, zirconium or lanthanium can also be added. Alloys of specified composition are formed into particles of selected size, and the particles then contacted in an atmosphere of controlled oxygen activity at elevated temperature over selected time periods. By treatment with a low oxygen-containing, or low moisture-containing gas an oxide of the alloying element is formed which diffuses to the surface of the particles to form a film. The addition of these elements to the base metal necessarily, and unavoidably reduces the Curie temperature of the metal.Type: GrantFiled: December 29, 1978Date of Patent: October 21, 1980Assignee: Exxon Research & Engineering Co.Inventors: Richard C. Krutenat, Chih-an Liu
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Patent number: 3930901Abstract: A compacted powder or extended ingot for use in the deposition of coatings consisting essentially of a cobalt-base alloy containing chromium, aluminum and yttrium is vacuum heat treated to convert any alumina present therein to aluminum and yttria.Type: GrantFiled: January 6, 1975Date of Patent: January 6, 1976Assignee: United Technologies CorporationInventor: Richard C. Krutenat
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Patent number: RE33876Abstract: Adherent, thermal shock-resistant protective coatings for nickel base super alloys are obtained by applying to the base metal a thin bond coat of an alloy of chromium aluminum and yttrium with materials selected from the group consisting of iron, cobalt, nickel and nickel-cobalt and applying thereover a continuously graded mixture of this material with a zirconia-based ceramic, the concentration of zirconia-based ceramic increasing from the bond coat to the outer layer. The zirconia ceramic may be stabilized by the addition thereto of amounts of magnesium oxide or other materials.Type: GrantFiled: October 10, 1989Date of Patent: April 7, 1992Assignee: United Technologies CorporationInventors: George W. Goward, Delton A. Grey, Richard C. Krutenat