Patents Represented by Attorney Summa & Allan, P.A.
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Patent number: 6630652Abstract: A method is disclosed for carrying out microwave-assisted chemical reactions. The method includes the steps of adding reagents to a pressure-resistant microwave-transparent vessel, securing the vessel against pressure release with a penetrable septum made of a material that can be penetrated by a needle while surrounding and sealing against the needle even after penetration to thereby maintaining the pressure integrity of the vessel, thereafter inserting a needle through the penetrable septum and into the pressure-secured vessel to provide fluid communication to the interior of the scaled pressure-resistant vessel through the needle, applying mechanical pressure against the septum while the needle is inserted therethrough, and irradiating the vessel and its contents with microwaves with the needle inserted therein.Type: GrantFiled: May 3, 2002Date of Patent: October 7, 2003Assignee: CEM CorporationInventor: William Edward Jennings
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Patent number: 6626470Abstract: A two-part connector (1) is provided for use in connecting and disconnecting fluid carrying conduits. The connector comprises lower and upper parts (2, 3) each having four fluid carrying duct (15) therethrough, and a valve member (17) for each duct. Each duct in the lower part (2) is aligned with its respective duct in the upper part (3) when the two connector parts are connected together. The connector has clamps (24) for retaining the lower and upper parts (2, 3) together in sealing engagement. The clamps are mounted on the upper connector part (3) and are pivotable thereabout. Hydraulic pistons are used to move the clamps, the clamps being located in a first position pivoted away from the connector whilst the lower and upper parts (2, 3) are being aligned relative to each other.Type: GrantFiled: May 7, 2002Date of Patent: September 30, 2003Assignee: Alpha Thames Ltd.Inventors: David Eric Appleford, Brian William Lane, Ian Ronald Sutton Watson
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Patent number: 6610551Abstract: A vertical geometry light emitting diode is disclosed that is capable of emitting light in the red, green, blue, violet and ultraviolet portions of the electromagnetic spectrum. The light emitting diode includes a conductive silicon carbide substrate, an InGaN quantum well, a conductive buffer layer between the substrate and the quantum well, a respective undoped gallium nitride layer on each surface of the quantum well, and ohmic contacts in a vertical geometry orientation.Type: GrantFiled: January 5, 2000Date of Patent: August 26, 2003Assignee: Cree, Inc.Inventors: Kathleen Marie Doverspike, John Adam Edmond, Hua-shuang Kong, Heidi Marie Dieringer, David B. Slater, Jr.
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Patent number: 6607920Abstract: An instrument for microwave-assisted chemical processes is disclosed that provides greater flexibility in carrying out microwave-assisted chemistry under varying conditions. The instrument includes a source of microwave radiation, and a cavity in communication with the source, with the cavity including at least one wall formed of two engaged portions that form a barrier to the transmission of microwaves when so engaged. The engaged portions are disengagable from one another, and one of the portions includes a microwave-attenuating opening.Type: GrantFiled: January 31, 2001Date of Patent: August 19, 2003Assignee: Cem CorporationInventors: William Edward Jennings, Edward Earl King
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Patent number: 6598746Abstract: A packaging blank capable of forming a display carton having an internally reinforced hanger panel comprises in one embodiment a substantially rectangular front panel, a substantially rectangular back panel, a left side panel, a right side panel, a glue flap, a hanger panel, and a pliable reinforcing sheet that is secured to a portion of the hanger panel, wherein cut-outs in the hanger panel and the reinforcing sheet are correspondingly aligned to provide reinforcement to the hanger panel. Upon construction, the blank provides a display carton having an internally reinforced hanger panel. A method for internally reinforcing the hanger panel of the display carton comprises in one embodiment the steps of providing a blank and a reinforcing sheet, aligning the reinforcing sheet and blank relative to one another, and securing the reinforcing sheet to the blank, all on a single in-line apparatus.Type: GrantFiled: September 13, 2001Date of Patent: July 29, 2003Assignee: Washburn Graphics, Inc.Inventors: Gerard Paul Lux, Jr., Alan B. Parnell, Michael J. Bittner, Stephen C. Sorrells, Jay Roy Gibble, Jr.
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Patent number: 6598853Abstract: A rotary valve for blocking opposed apertures of a valve body includes a central assembly comprising laterally offset hemi-cylindrical first camming surfaces on an exterior of a rotatable spool and substantially hemi-cylindrical seal plates with hemi-cylindrical first cam following surfaces which engage the first camming surfaces. Stop pins fixed to the valve body run in rebates in the seal plates to limit rotation of the seal plates to 90°. Each of four clearance members is supported by a wedging block loosely located in a recess in the spool, slidingly extends through a radial slot in one of the seal plates and prevents the spool jamming the seal plate against an inner face of the valve body during closing of the valve until a projecting end of the clearance member enters a recess in the valve body.Type: GrantFiled: February 23, 2001Date of Patent: July 29, 2003Assignee: Alpha Thames LimitedInventors: David Eric Appleford, Brian William Lane
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Patent number: 6593747Abstract: The present invention is directed to a method and apparatus of determining the degree of saturation of a decontamination-removing substance or adsorbent such as an alumina absorbent or activated charcoal. The method and apparatus is sufficiently sensitive to detect changes in the bulk specific electrical conductivity of the adsorbent.Type: GrantFiled: October 5, 1998Date of Patent: July 15, 2003Assignees: The University of Western Ontario, Bayer, Inc.Inventors: Judit E. Puskas, Shahzad Barghi
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Patent number: 6590069Abstract: The invention is a novel method for the late introduction of additives into condensation polymers. The method employs a reactive carrier that functions as a delivery vehicle for one or more additives. The reactive carrier reacts with the condensation polymers, thereby binding the reactive carrier in the polymer resin and preventing the emergence of the reactive carrier from the polymer resin during subsequent thermal processing.Type: GrantFiled: December 14, 2001Date of Patent: July 8, 2003Assignee: Wellman, Inc.Inventors: Carl Steven Nichols, Tony Clifford Moore, Robert Joseph Schiavone, Walter Lee Edwards
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Patent number: 6589442Abstract: A stable concentrated dust control composition comprises a mixture of crude tall oil and vegetable oil emulsified in water. The dust control composition is completely organic, non-corrosive, non-flammable, non-toxic, ecologically safe, readily dilutable with water, safe to use, easy to apply to a desired surface and environmentally responsible. The water soluble formula may be designed to penetrate into the surfaces to bind with surface materials to create a dust free durable surface safe to motorists. The composition suspresses dust, so it is unable to be picked up and be carried away by wind and water, therefore preventing soil erosion and damage to field crops. The composition also reduces airborne dust that carries disease causing pollutants that are transported to distant communities.Type: GrantFiled: August 10, 2000Date of Patent: July 8, 2003Assignee: Q-X Enviro Products Ltd.Inventors: Walter Wilson, Roy Baker, Vita Martez
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Patent number: 6582817Abstract: Disclosed is a nonwoven fabric that is formed of polyethylene glycol modified copolyester staple fibers. The copolyester staple fibers include polyethylene terephthalate in an amount sufficient for the copolyester staple fibers to possess dimensional stability properties substantially similar to those of conventional, unmodified polyethylene terephthalate fibers, polyethylene glycol in an amount sufficient for the copolyester staple fibers to possess wicking characteristics that are superior to those of conventional, unmodified polyethylene terephthalate fibers, and chain branching agent in an amount less than about 0.0014 mole-equivalent branches per mole of standardized polymer. Also disclosed are methods for making such nonwoven fabrics.Type: GrantFiled: January 17, 2001Date of Patent: June 24, 2003Assignee: Wellman, Inc.Inventors: Keith James Carnes, James Burch Branum
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Patent number: 6583454Abstract: A high electron mobility transistor (HEMT) is disclosed that includes a semi-insulating silicon carbide substrate, an aluminum nitride buffer layer on the substrate, an insulating gallium nitride layer on the buffer layer, an active structure of aluminum gallium nitride on the gallium nitride layer, a passivation layer on the aluminum gallium nitride active structure, and respective source, drain and gate contacts to the aluminum gallium nitride active structure.Type: GrantFiled: March 29, 2001Date of Patent: June 24, 2003Assignee: Cree, Inc.Inventors: Scott Thomas Sheppard, Scott Thomas Allen, John Williams Palmour
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Patent number: 6582986Abstract: A method of fabricating a gallium nitride-based semiconductor structure on a substrate includes the steps of forming a mask having at least one opening therein directly on the substrate, growing a buffer layer through the opening, and growing a layer of gallium nitride upwardly from the buffer layer and laterally across the mask. During growth of the gallium nitride from the mask, the vertical and horizontal growth rates of the gallium nitride layer are maintained at rates sufficient to prevent polycrystalline material nucleating on said mask from interrupting the lateral growth of the gallium nitride layer. In an alternative embodiment, the method includes forming at least one raised portion defining adjacent trenches in the substrate and forming a mask on the substrate, the mask having at least one opening over the upper surface of the raised portion. A buffer layer may be grown from the upper surface of the raised portion.Type: GrantFiled: August 21, 2001Date of Patent: June 24, 2003Assignee: Cree, Inc.Inventors: Hua-Shuang Kong, John Adam Edmond, Kevin Ward Haberern, David Todd Emerson
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Patent number: 6572966Abstract: A method is disclosed for producing polyester fibers having uniform primary and secondary crimps. The method includes the steps of advancing fibers into a stuffer box having an upper doctor blade and a lower doctor blade, positioning the upper doctor blade and the lower doctor blade such that the doctor blade gap is broad enough to permit the formation of secondary crimps and yet is narrow enough to maintain primary and secondary crimp uniformity, and then applying a longitudinal force against the advancing fibers to impart uniform primary and secondary crimps. The polyester fibers crimped according to the disclosed method have substantially uniform primary and secondary crimps, and are further characterized by tensile factor that is about the same as the tensile factor possessed by an otherwise identical uncrimped polyester fiber.Type: GrantFiled: October 20, 2000Date of Patent: June 3, 2003Assignee: Wellman, Inc.Inventors: Vladimir Y. Raskin, Edwin Starke Farley, Jr., Frederick Lee Travelute, III, Mendel Lyde Poston, Jr.
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Patent number: 6573359Abstract: The invention is a novel method for the late introduction of additives into a process for making condensation polymers. The method employs a reactive carrier that functions as a delivery vehicle for one or more additives. The reactive carrier reacts with the condensation polymers, thereby binding the reactive carrier in the polymer resin and preventing the emergence of the reactive carrier from the polymer resin during subsequent thermal processing.Type: GrantFiled: December 14, 2001Date of Patent: June 3, 2003Assignee: Wellman, Inc.Inventors: Carl Steven Nichols, Tony Clifford Moore, Robert Joseph Schiavone, Walter Lee Edwards
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Patent number: 6572076Abstract: A valve actuator (1) is provided which comprises an actuator stem (4) extending from a housing (2) which contains a sleeve (17). The actuator stem (4) is driven so as to cause the sleeve to compress a stack of springs (22) within the housing until bolts (25) engage the sleeve, locking the springs in a compressed state. At the same time an armature (28) on the actuator stem is attracted to an electromagnet (29) within the housing. The actuator stem can then be driven to open or close a valve in a controlled manner without first compressing or releasing the springs. In an emergency, the electromagnet is switched off, releasing the armature thus unlocking the stack of springs. The released springs push the piston which partially retracts the actuator stem into the housing causing the valve to be closed.Type: GrantFiled: May 31, 2002Date of Patent: June 3, 2003Assignee: Alpha Thames Ltd.Inventors: David Eric Appleford, Brian William Lane, Benjamin McGeever
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Patent number: 6570185Abstract: A power transistor is disclosed that exhibits increased power capacity, reduced on-resistance and prevents current pinch off. The transistor comprises an insulated gate field-effect transistor and including a gate insulator; a protective region having a first conductivity type adjacent the insulator of the transistor for protecting the insulator from the degrading or breakdown effects of a large voltage applied across the device; and a current-enhancing layer having the opposite conductivity type from the protective region and positioned between the protective region and another first conductivity-type region of the transistor.Type: GrantFiled: February 7, 1997Date of Patent: May 27, 2003Assignee: Purdue Research FoundationInventor: Jian Tan
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Patent number: 6569991Abstract: The invention is a novel method for the late introduction of additives into polyethylene terephthalate. The method employs a reactive carrier that functions as a delivery vehicle for one or more additives. The reactive carrier reacts with the polyethylene terephthalate, thereby binding the reactive carrier in the polyethylene terephthalate resin and preventing the emergence of the reactive carrier and additives from the polyethylene terephthalate during subsequent thermal processing.Type: GrantFiled: August 17, 2001Date of Patent: May 27, 2003Assignee: Wellman, Inc.Inventors: Carl Steven Nichols, Tony Clifford Moore, Robert Joseph Schiavone, Walter Lee Edwards
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Patent number: 6566637Abstract: A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.Type: GrantFiled: June 28, 2000Date of Patent: May 20, 2003Assignee: CEM CorporationInventors: Robert N. Revesz, James E. Thomas, Wyatt P. Hargett, Jr.
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Patent number: 6548304Abstract: A method and apparatus for rapidly and accurately determining the fat and oil content of a sample using microwave drying and NMR analysis is disclosed. The method and apparatus incorporate a low mass, porous, hydrophilic and lipophilic sample pad that ensures that the entire sample is subjected to NMR analysis. The method and apparatus according to the invention are suitable for rapidly determining the fat and oil content of samples collected during a production process and for process or quality control.Type: GrantFiled: March 28, 2002Date of Patent: April 15, 2003Assignee: CEM CorporationInventor: Michael J. Collins
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Patent number: 6548303Abstract: A method and apparatus for rapidly and accurately determining the fat and oil content of a sample using microwave drying and NMR analysis is disclosed. The method and apparatus incorporate a low mass, porous, hydrophilic and lipophilic sample pad that ensures that the entire sample is subjected to NMR analysis. The method and apparatus according to the invention are suitable for rapidly determining the fat and oil content of samples collected during a production process and for process or quality control.Type: GrantFiled: June 23, 2000Date of Patent: April 15, 2003Assignee: CEM CorporationInventors: Michael J. Collins, Edward E. King