Patents by Inventor James T. Hoggins
James T. Hoggins 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: 6952513Abstract: An optical apparatus (110) includes a base member (121) with a plurality of grooves (181-187, 191-197), and includes a respective lens (11-17) fixedly mounted in each groove. Optical filters (31-35) are mounted on the support member in predetermined locations. One such lens is fixedly secured to an input optical fiber (21), and the input fiber is used to introduce radiation into the apparatus. Several output optical fibers (22-27) are successively positioned in relation to respective lenses by a fiber positioner (302), which monitors the amount of radiation passing through the fiber being positioned, and then causes a laser (303) to fuse the fiber end to the associated lens in a selected position.Type: GrantFiled: August 6, 2003Date of Patent: October 4, 2005Assignee: Raytheon CompanyInventors: Daniel J. Murphy, Robert B. Chipper, Brent L. Sisney, David H. Rester, James T. Hoggins, James J. Hudgens
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Patent number: 6768844Abstract: An apparatus includes a support section which supports a further section, an optically transmissive substrate, and a dispersive section, the further section transporting plural signal components at respective frequencies along a path of travel. A plurality of optical fibers have ends fixedly coupled to a surface on the substrate. The dispersive section has a dispersive characteristic which deviates a direction of travel of each signal component by a respective different amount to optically map each signal component between the end portion of a respective fiber and the path of travel in the further section. During assembly, the fiber ends are moved relative to the surface while radiation passing through them is monitored, and then they are fixedly coupled to the surface in a selected position.Type: GrantFiled: March 30, 2001Date of Patent: July 27, 2004Assignee: Raytheon CompanyInventors: Daniel J. Murphy, Robert B. Chipper, Brent L. Sisney, David H. Rester, James T. Hoggins, James J. Hudgens
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Publication number: 20040028339Abstract: An optical apparatus (110) includes a base member (121) with a plurality of grooves (181-187, 191-197), and includes a respective lens (11-17) fixedly mounted in each groove. Optical filters (31-35) are mounted on the support member in predetermined locations. One such lens is fixedly secured to an input optical fiber (21), and the input fiber is used to introduce radiation into the apparatus. Several output optical fibers (22-27) are successively positioned in relation to respective lenses by a fiber positioner (302), which monitors the amount of radiation passing through the fiber being positioned, and then causes a laser (303) to fuse the fiber end to the associated lens in a selected position.Type: ApplicationFiled: August 6, 2003Publication date: February 12, 2004Applicant: Raytheon CompanyInventors: Daniel J. Murphy, Robert B. Chipper, Brent L. Sisney, David H. Rester, James T. Hoggins, James J. Hudgens
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Publication number: 20030228110Abstract: An optical apparatus (110) includes a base member (121) with a plurality of grooves (181-187, 191-197), and includes a respective lens (11-17) fixedly mounted in each groove. Optical filters (31-35) are mounted on the support member in predetermined locations. One such lens is fixedly secured to an input optical fiber (21), and the input fiber is used to introduce radiation into the apparatus. Several output optical fibers (22-27) are successively positioned in relation to respective lenses by a fiber positioner (302), which monitors the amount of radiation passing through the fiber being positioned, and then causes a laser (303) to fuse the fiber end to the associated lens in a selected position.Type: ApplicationFiled: March 30, 2001Publication date: December 11, 2003Applicant: Raytheon CompanyInventors: Daniel J. Murphy, Robert B. Chipper, Brent L. Sisney, David H. Rester, James T. Hoggins, James J. Hudgens
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Patent number: 5532048Abstract: A protectively coated optical device which includes an infrared transmissive optical surface and an infrared transmissive polymer coating on the surface having low hardness, high strength and low elastic (Young's) modulus and is transmissive in the 8 to 12 micrometer wavelength range. The hardness is less than 50 kg/mm.sup.2, the strength is from about 10,000 to about 100,000 psi and the elastic (Young's) modulus is from about 0.2.times.10.sup.6 to about 3.times.10.sup.6 psi.Type: GrantFiled: January 11, 1994Date of Patent: July 2, 1996Assignee: Texas Instruments IncorporatedInventors: Paul Klocek, James T. Hoggins
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Patent number: 5370912Abstract: A method for depositing diamond film on a substrate utilizing a tuneable microwave cavity with an adjustable height and antenna and an electrically insulated chamber comprises the steps of decreasing the pressure within the chamber, creating a plasma including hydrogen gas within the chamber, tuning the cavity by varying its height and the depth of insertion of the antenna to minimize reflected power and properly position the plasma on the substrate, injecting a hydrocarbon gas into the chamber, and maintaining the plasma for a sufficient time for diamond film of the desired thickness to be deposited.Type: GrantFiled: July 20, 1993Date of Patent: December 6, 1994Assignee: Norton CompanyInventors: Louis K. Bigelow, James T. Hoggins, Deborah Gunderson, Cristan Ellison
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Patent number: 5364423Abstract: Synthetic diamond film produced by chemical vapor deposition can be crushed to obtain diamond grit which has useful abrasive properties. The flexibility of CVD deposition processes in determining diamond film properties means that CVD diamond grit properties can be tailored to particular abrasive applications. In a disclosed embodiment, the grit particles are coated with a magnetic material. The coated grit particles can then be aligned with a magnetic field, and the coated grit particles are bonded to a matrix while aligned. In a further disclosed form of the invention, a chemical vapor deposition system, such as an arc jet plasma deposition system, is provided in a chamber.Type: GrantFiled: May 6, 1993Date of Patent: November 15, 1994Assignee: Norton CompanyInventors: Louis K. Bigelow, Frank J. Csillag, James T. Hoggins
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Patent number: 5324586Abstract: A protectively coated optical device which includes an infrared transmissive optical surface and an infrared transmissive polymer coating on the surface having low hardness, high strength and low elastic (Young's) modulus and is transmissive in the 8 to 12 micrometer wavelength range. The hardness is less than 50 kg/mm.sup.2, the strength is from about 10,000 to about 100,000 psi and the elastic (Young's) modulus is from about 0.2.times.10.sup.6 to about 3.times.10.sup.6 psi.Type: GrantFiled: September 2, 1992Date of Patent: June 28, 1994Assignee: Texas Instruments IncorporatedInventors: Paul Klocek, James T. Hoggins
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Patent number: 5213248Abstract: 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: GrantFiled: January 10, 1992Date of Patent: May 25, 1993Assignee: Norton CompanyInventors: Ralph M. Horton, James T. Hoggins, Shih-Yee Kuo
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Patent number: 5049164Abstract: To prevent thermal stress from damaging a PCD or diamond, multilayer metal coatings for bonding polycrystalline diamond compacts and diamond crystals to a matrix comprise a first metal layer of a refractory metal, such as tungsten, a compliant metal layer of copper, and an outer metal layer of a refractory metal such as tungsten. Metallic bonding layers of a metal, such as nickel, are placed between the tungsten and copper layers for improved bonding. The method of manufacturing multilayer metal coatings comprises applying the inner metal layer by chemical vapor deposition, applying the first bonding layer metal by electrolytic deposition, applying the compliant layer metal by electrolytic deposition, applying the second bonding layer by electrolytic deposition and applying the outer layer by chemical vapor deposition. A superabrasive tool element comprises a coated diamond product bonded either to a matrix comprising tungsten carbide or iron powder or to a cemented tungsten carbide support.Type: GrantFiled: January 5, 1990Date of Patent: September 17, 1991Assignee: Norton CompanyInventors: Ralph M. Horton, Royce A. Anthon, James T. Hoggins
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Patent number: 4374109Abstract: Phosphosiderite, FePO.sub.4.2H.sub.2 O, is prepared in high yield from molten Fe(NO.sub.3).sub.3.9H.sub.2 O and H.sub.3 PO.sub.4 using a phosphosiderite seed for initiation of precipitation and crystallization.Type: GrantFiled: December 17, 1981Date of Patent: February 15, 1983Assignee: Ashland Oil, Inc.Inventors: Ferdinand A. Ruszala, James T. Hoggins, Stephen S. Hupp
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Patent number: 4359438Abstract: Durable bipolar fuel cell collecting plates are molded from resin bonded graphite and furfural wetting agent.Type: GrantFiled: September 21, 1981Date of Patent: November 16, 1982Assignee: Ashland Oil, Inc.Inventors: James T. Hoggins, Golden F. Watts