Patents by Inventor Geoffrey Alan Scarsbrook
Geoffrey Alan Scarsbrook 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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Publication number: 20240116131Abstract: This disclosure relates to a friction stir welding tool insert comprising a polycrystalline cubic boron nitride, PCBN, composite material with a textured surface layer. The textured surface layer comprises a pre-defined repeating pattern.Type: ApplicationFiled: December 5, 2023Publication date: April 11, 2024Inventors: Teresa RODRIGUEZ SUAREZ, Geoffrey Alan SCARSBROOK, Maria Louise CANN, Josquin PFAFF
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Patent number: 11883902Abstract: The present application relates to a friction stir welding tool insert comprising a polycrystalline cubic boron nitride, PCBN, composite material with a textured surface layer. The textured surface layer comprises a pre-defined repeating pattern.Type: GrantFiled: December 19, 2020Date of Patent: January 30, 2024Inventors: Teresa Rodriguez Suarez, Geoffrey Alan Scarsbrook, Maria Louise Cann, Josquin Pfaff
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Publication number: 20230143286Abstract: The present application relates to a friction stir welding tool insert comprising a polycrystalline cubic boron nitride, PCBN, composite material with a textured surface layer. The textured surface layer comprises a pre-defined repeating pattern.Type: ApplicationFiled: December 19, 2020Publication date: May 11, 2023Inventors: Teresa RODRIGUEZ SUAREZ, Geoffrey Alan SCARSBROOK, Maria Louise CANN, Josquin PFAFF
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Patent number: 11371147Abstract: A microwave plasma reactor for manufacturing synthetic diamond material via chemical vapour deposition, the microwave plasma reactor includes a plasma chamber, a substrate holder, a microwave coupling configuration for feeding microwaves into the plasma chamber, and a gas flow system for feeding process gases into the plasma chamber and removing them therefrom. The gas flow system includes a gas inlet array having a plurality of gas inlets for directing the process gases towards the substrate holder. The gas inlet array includes at least six gas inlets disposed in a substantially parallel or divergent orientation relative to a central axis of the plasma chamber.Type: GrantFiled: December 14, 2011Date of Patent: June 28, 2022Assignee: Element Six Technologies LimitedInventors: Steven Edward Coe, Jonathan James Wilman, Daniel James Twitchen, Geoffrey Alan Scarsbrook, John Robert Brandon, Christopher John Howard Wort
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Publication number: 20220023968Abstract: This disclosure relates to a tool assembly for friction stir welding. The tool assembly comprises a tool holder and a puck each having an axis of rotation. The tool holder comprises a tool post and the puck comprises a pin. The puck is coupled to the tool post. The tool assembly is adapted such that during friction stir welding, run-out of the tool holder, measured as the run-out between the axis of rotation of the tool holder and the axis of rotation of the pin, does not exceed 10 ?m.Type: ApplicationFiled: December 5, 2019Publication date: January 27, 2022Inventors: Geoffrey Alan SCARSBROOK, David Christian BOWES, Shuo LU, Santonu GHOSH, Teresa RODRIGUEZ SUAREZ
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Publication number: 20210115591Abstract: A CVD single crystal diamond material suitable for use in, or as, an optical device or element. It is suitable for use in a wide range of optical applications such as, for example, optical windows, laser windows, optical reflectors, optical refractors and gratings, and etalons. The CVD diamond material is produced by a CVD method in the presence of a controlled low level of nitrogen to control the development of crystal defects and thus achieve a diamond material having key characteristics for optical applications.Type: ApplicationFiled: October 27, 2020Publication date: April 22, 2021Applicant: ELEMENT SIX TECHNOLOGIES LIMITEDInventors: HERMAN PHILIP GODFRIED, GEOFFREY ALAN SCARSBROOK, DANIEL JAMES TWITCHEN, EVERT PIETER HOUWMAN, WILHELMUS GERTRUDA MARIA NELISSEN, ANDREW JOHN WHITEHEAD, CLIVE EDWARD HALL, PHILIP MAURICE MARTINEAU
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Patent number: 10851471Abstract: A CVD single crystal diamond material suitable for use in, or as, an optical device or element. It is suitable for use in a wide range of optical applications such as, for example, optical windows, laser windows, optical reflectors, optical refractors and gratings, and etalons. The CVD diamond material is produced by a CVD method in the presence of a controlled low level of nitrogen to control the development of crystal defects and thus achieve a diamond material having key characteristics for optical applications.Type: GrantFiled: October 19, 2018Date of Patent: December 1, 2020Assignee: Element Six Technologies LimitedInventors: Herman Philip Godfried, Geoffrey Alan Scarsbrook, Daniel James Twitchen, Evert Pieter Houwman, Wilhelmus Gertruda Maria Nelissen, Andrew John Whitehead, Clive Edward Hall, Philip Maurice Martineau
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Patent number: 10734198Abstract: A microwave plasma reactor for manufacturing synthetic diamond material via chemical vapour deposition, the microwave plasma reactor comprising: a plasma chamber defining a resonant cavity for supporting a primary microwave resonance mode having a primary microwave resonance mode frequency f; a plurality of microwave sources coupled to the plasma chamber for generating and feeding microwaves having a total microwave power P? into the plasma chamber; a gas flow system for feeding process gases into the plasma chamber and removing them therefrom; and a substrate holder disposed in the plasma chamber and comprising a supporting surface for supporting a substrate on which the synthetic diamond material is to be deposited in use, wherein the plurality of microwave sources are configured to couple at least 30% of the total microwave power P? into the plasma chamber in the primary microwave resonance mode frequency f, and wherein at least some of the plurality of microwave sources are solid state microwave sources.Type: GrantFiled: June 10, 2015Date of Patent: August 4, 2020Assignee: Element Six Technologies LimitedInventors: John Robert Brandon, Ian Friel, Michael Andrew Cooper, Geoffrey Alan Scarsbrook, Ben Llewlyn Green
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Patent number: 10240254Abstract: A method of fabricating plates of super-hard material and cutting techniques suitable for such a method. A method of fabricating a plate (14) of super-hard material, the method comprising: •providing a substrate (4) have a lateral dimension of at least 40 mm; •growing a layer of super-hard material on the substrate (4) using a chemical vapor deposition process; and •slicing one or more plates (14) of super-hard material from the substrate using a collimated cutting beam (8), the or each plate of super-hard material (14) having a lateral dimension of at least 40 mm, wherein the collimated cutting beam (8) is collimated with a half angle divergence of no more than 5 degrees.Type: GrantFiled: November 2, 2015Date of Patent: March 26, 2019Assignee: Element Six Technologies LimitedInventors: Andrew Michael Bennett, Laura Anne Hutton, Geoffrey Alan Scarsbrook
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Publication number: 20190055669Abstract: A CVD single crystal diamond material suitable for use in, or as, an optical device or element. It is suitable for use in a wide range of optical applications such as, for example, optical windows, laser windows, optical reflectors, optical refractors and gratings, and etalons. The CVD diamond material is produced by a CVD method in the presence of a controlled low level of nitrogen to control the development of crystal defects and thus achieve a diamond material having key characteristics for optical applications.Type: ApplicationFiled: October 19, 2018Publication date: February 21, 2019Applicant: ELEMENT SIX TECHNOLOGIES LIMITEDInventors: HERMAN PHILIP GODFRIED, GEOFFREY ALAN SCARSBROOK, DANIEL JAMES TWITCHEN, EVERT PIETER HOUWMAN, WILHEMUS GERTRUDA MARIA NELISSEN, ANDREW JOHN WHITEHEAD, CLIVE EDWARD HALL, PHILIP MAURICE MARTINEAU
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Patent number: 10125434Abstract: A CVD single crystal diamond material suitable for use in, or as, an optical device or element. It is suitable for use in a wide range of optical applications such as, for example, optical windows, laser windows, optical reflectors, optical refractors and gratings, and etalons. The CVD diamond material is produced by a CVD method in the presence of a controlled low level of nitrogen to control the development of crystal defects and thus achieve a diamond material having key characteristics for optical applications.Type: GrantFiled: December 9, 2016Date of Patent: November 13, 2018Assignee: Element Six Technologies LimitedInventors: Herman Philip Godfried, Geoffrey Alan Scarsbrook, Daniel James Twitchen, Evert Pieter Houwman, Wilhemus Gertruda Maria Nelissen, Andrew John Whitehead, Clive Edward Hall, Philip Maurice Martineau
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Patent number: 10011491Abstract: A polycrystalline CVD diamond material comprising a surface having a surface roughness Rq of less than 5 nm, wherein said surface is damage free to the extent that if an anisotropic thermal revealing etch is applied thereto, a number density of defects revealed by the anisotropic thermal revealing etch is less than 100 per mm2.Type: GrantFiled: April 13, 2015Date of Patent: July 3, 2018Assignee: Element Six Technologies LimitedInventors: Chee-Leong Lee, Erdan Gu, Geoffrey Alan Scarsbrook, Ian Friel, Martin David Dawson
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Patent number: 9816202Abstract: A method of producing a large area plate of single crystal diamond from CVD diamond grown on a substrate substantially free of surface defects by chemical vapour deposition (CVD). The homoepitaxial CVD grown diamond and the substrate are severed transverse to the surface of the substrate on which diamond growth took place to produce the large area plate of single crystal CVD diamond.Type: GrantFiled: October 20, 2016Date of Patent: November 14, 2017Assignee: Element Six Technologies LimitedInventors: Geoffrey Alan Scarsbrook, Philip Maurice Martineau, Daniel James Twitchen
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Publication number: 20170306524Abstract: A method of fabricating plates of super-hard material and cutting techniques suitable for such a method. A method of fabricating a plate (14) of super-hard material, the method comprising: • providing a substrate (4) have a lateral dimension of at least 40 mm; • growing a layer of super-hard material on the substrate (4) using a chemical vapour deposition process; and • slicing one or more plates (14) of super-hard material from the substrate using a collimated cutting beam (8), the or each plate of super-hard material (14) having a lateral dimension of at least 40 mm, wherein the collimated cutting beam (8) is collimated with a half angle divergence of no more than 5 degrees.Type: ApplicationFiled: November 2, 2015Publication date: October 26, 2017Applicant: ELEMENT SIX TECHNOLOGIES LIMITEDInventors: ANDREW MICHAEL BENNETT, LAURA ANNE HUTTON, GEOFFREY ALAN SCARSBROOK
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Patent number: 9738970Abstract: The present disclosure relates to substrates for use in microwave plasma reactors. Certain substrates include a cylindrical disc of a carbide forming refractory metal having a flat growth surface on which CVD diamond is to be grown and a flat supporting surface opposed to said growth surface. The cylindrical disc may have a diameter of 80 mm or more. The growth surface may have a flatness variation no more than 100 mm The supporting surface may have a flatness variation no more than 100 mm.Type: GrantFiled: September 11, 2014Date of Patent: August 22, 2017Assignee: Element Six LimitedInventors: Carlton Nigel Dodge, Paul Nicolas Inglis, Geoffrey Alan Scarsbrook, Timothy Peter Mollart, Charles Simon James Pickles, Steven Edward Coe, Joseph Michael Dodson, Alexander Lamb Cullen, John Robert Brandon, Christopher John Howard Wort
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Publication number: 20170183794Abstract: A CVD single crystal diamond material suitable for use in, or as, an optical device or element. It is suitable for use in a wide range of optical applications such as, for example, optical windows, laser windows, optical reflectors, optical refractors and gratings, and etalons. The CVD diamond material is produced by a CVD method in the presence of a controlled low level of nitrogen to control the development of crystal defects and thus achieve a diamond material having key characteristics for optical applications.Type: ApplicationFiled: December 9, 2016Publication date: June 29, 2017Applicant: ELEMENT SIX TECHNOLOGIES LIMITEDInventors: HERMAN PHILIP GODFRIED, GEOFFREY ALAN SCARSBROOK, DANIEL JAMES TWITCHEN, EVERT PIETER HOUWMAN, WILHEMUS GERTRUDA MARIA NELISSEN, ANDREW JOHN WHITEHEAD, CLIVE EDWARD HALL, PHILIP MAURICE MARTINEAU
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Patent number: 9637838Abstract: Disclosed herein are methods of manufacturing synthetic CVD diamond material including orienting and controlling process gas flow in a microwave plasma reactor to improve performance. The microwave plasma reactor includes a gas flow system with a gas inlet comprising one or more gas inlet nozzles disposed opposite the growth surface area and configured to inject process gases towards the growth surface area. The method comprises injecting process gases towards the growth surface area at a total gas flow rate equal to or greater than 500 standard cm3 per minute wherein the process gases are injected into the plasma chamber through the one or more gas inlet nozzles with a Reynolds number in a range 1 to 100.Type: GrantFiled: December 14, 2011Date of Patent: May 2, 2017Assignee: Element Six LimitedInventors: Steven Edward Coe, Jonathan James Wilman, Helen Wilman, Daniel James Twitchen, Geoffrey Alan Scarsbrook, John Robert Brandon, Christopher John Howard Wort, Matthew Lee Markham
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Publication number: 20170037539Abstract: A method of producing a large area plate of single crystal diamond from CVD diamond grown on a substrate substantially free of surface defects by chemical vapour deposition (CVD). The homoepitaxial CVD grown diamond and the substrate are severed transverse to the surface of the substrate on which diamond growth took place to produce the large area plate of single crystal CVD diamond.Type: ApplicationFiled: October 20, 2016Publication date: February 9, 2017Applicant: ELEMENT SIX TECHNOLOGIES LIMITEDInventors: GEOFFREY ALAN SCARSBROOK, PHILIP MAURICE MARTINEAU, DANIEL JAMES TWITCHEN
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Publication number: 20170040145Abstract: A microwave plasma reactor for manufacturing synthetic diamond material via chemical vapour deposition, the microwave plasma reactor comprising: a plasma chamber defining a resonant cavity for supporting a primary microwave resonance mode having a primary microwave resonance mode frequency f; a plurality of microwave sources coupled to the plasma chamber for generating and feeding microwaves having a total microwave power P? into the plasma chamber; a gas flow system for feeding process gases into the plasma chamber and removing them therefrom; and a substrate holder disposed in the plasma chamber and comprising a supporting surface for supporting a substrate on which the synthetic diamond material is to be deposited in use, wherein the plurality of microwave sources are configured to couple at least 30% of the total microwave power P? into the plasma chamber in the primary microwave resonance mode frequency f, and wherein at least some of the plurality of microwave sources are solid state microwave sources.Type: ApplicationFiled: June 10, 2015Publication date: February 9, 2017Applicant: ELEMENT SIX TECHNOLOGIES LIMITEDInventors: JOHN ROBERT BRANDON, IAN FRIEL, MICHAEL ANDREW COOPER, GEOFFREY ALAN SCARSBROOK, BEN LLEWLYN GREEN
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Patent number: 9551090Abstract: A CVD single crystal diamond material suitable for use in, or as, an optical device or element. It is suitable for use in a wide range of optical applications such as, for example, optical windows, laser windows, optical reflectors, optical refractors and gratings, and etalons. The CVD diamond material is produced by a CVD method in the presence of a controlled low level of nitrogen to control the development of crystal defects and thus achieve a diamond material having key characteristics for optical applications.Type: GrantFiled: August 19, 2014Date of Patent: January 24, 2017Assignee: Element Six Technologies LimitedInventors: Herman Philip Godfried, Geoffrey Alan Scarsbrook, Daniel James Twitchen, Evert Pieter Houwman, Wilhelmus Gertruda Maria Nelissen, Andrew John Whitehead, Clive Edward Hall, Philip Maurice Martineau