Patents by Inventor Emil Kolev
Emil Kolev 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: 11881683Abstract: A semiconductor device fabrication method in which a growing process is followed by a capping process in which a phosphor containing material cap layer is deposited over a final GaAs based layer. The wafer, containing many such substrates, can be removed from the reaction chamber to continue processing at a later time without creating an oxide layer on the final GaAs based layer. In continuing processing, a decomposition process selectively decomposes the phosphor containing material cap layer, after which a regrowing process is performed to grow additional layers of the device structure. The capping, decomposition and regrowth processes can be repeated multiple times on the semiconductor devices on the wafer during device fabrication.Type: GrantFiled: November 5, 2020Date of Patent: January 23, 2024Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Constance J. Chang-Hasnain, Jiaxing Wang, Jonas H. Kapraun, Emil Kolev
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Publication number: 20210159668Abstract: A vertical cavity surface emitter device (e.g., VCSEL or RC-LED) containing a buried index-guiding current confinement aperture layer which is grown, and lithographically processed to define position, shape and dimension of an inner aperture. In a regrowth process, the aperture is filled with a single crystalline material from the third contact layer. The aperture provides for both current and optical confinement, while allowing for higher optical power output and improved thermal conductivity.Type: ApplicationFiled: November 5, 2020Publication date: May 27, 2021Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Constance J. Chang-Hasnain, Jiaxing Wang, Kevin T. Cook, Jonas H. Kapraun, Emil Kolev
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Publication number: 20210159669Abstract: A semiconductor device fabrication method in which a growing process is followed by a capping process in which a phosphor containing material cap layer is deposited over a final GaAs based layer. The wafer, containing many such substrates, can be removed from the reaction chamber to continue processing at a later time without creating an oxide layer on the final GaAs based layer. In continuing processing, a decomposition process selectively decomposes the phosphor containing material cap layer, after which a regrowing process is performed to grow additional layers of the device structure. The capping, decomposition and regrowth processes can be repeated multiple times on the semiconductor devices on the wafer during device fabrication.Type: ApplicationFiled: November 5, 2020Publication date: May 27, 2021Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Constance J. Chang-Hasnain, Jiaxing Wang, Jonas H. Kapraun, Emil Kolev
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Patent number: 8662204Abstract: A core barrel restraint adapted to prevent inadvertent dropping of a core barrel assembly during retrieval of a core sample can include a cup adapted to fit over an overshot and a brace adapted to be coupled to a core barrel assembly. A cable can connect the cup and brace and prevent the core barrel from falling if the overshot latch mechanism holding the core barrel assembly and overshot together fails.Type: GrantFiled: May 25, 2011Date of Patent: March 4, 2014Assignee: Longyear TM, Inc.Inventors: Emil Kolev, Nathan Kaesler
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Patent number: 8291791Abstract: An open-faced rod-spinning device configured for making and/or breaking joints between threaded drill rods. The rod-spinning device may include a drive gear with an open face. The drive gear may also be coupled to a plurality of drive pins. The rod-spinning device may include a carriage assembly including an open face for receiving and rotating about a drill rod. The carriage assembly may include a plurality of gripping lobes configured to be engaged and rotated by the drive pins about pivot pins. The drive gear may be configured to rotate relative to the carriage assembly to cause the drive pins to engage and rotate the gripping lobes.Type: GrantFiled: July 21, 2011Date of Patent: October 23, 2012Assignee: Longyear TM, Inc.Inventors: Trevor Lyndon Light, Emil Kolev, Michael Andreas Kontou
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Publication number: 20110297444Abstract: A core barrel restraint adapted to prevent inadvertent dropping of a core barrel assembly during retrieval of a core sample can include a cup adapted to fit over an overshot and a brace adapted to be coupled to a core barrel assembly. A cable can connect the cup and brace and prevent the core barrel from falling if the overshot latch mechanism holding the core barrel assembly and overshot together fails.Type: ApplicationFiled: May 25, 2011Publication date: December 8, 2011Applicant: LONGYEAR TM, INC.Inventors: Emil Kolev, Nathan Kaesler
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Publication number: 20110271797Abstract: An open-faced rod-spinning device configured for making and/or breaking joints between threaded drill rods. The rod-spinning device may include a drive gear with an open face. The drive gear may also be coupled to a plurality of drive pins. The rod-spinning device may include a carriage assembly including an open face for receiving and rotating about a drill rod. The carriage assembly may include a plurality of gripping lobes configured to be engaged and rotated by the drive pins about pivot pins. The drive gear may be configured to rotate relative to the carriage assembly to cause the drive pins to engage and rotate the gripping lobes.Type: ApplicationFiled: July 21, 2011Publication date: November 10, 2011Applicant: LONGYEAR TM, INC.Inventors: Trevor Lyndon Light, Emil Kolev, Michael Andreas Kontou
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Patent number: 8006590Abstract: An open-faced rod-spinning device configured for making and/or breaking joints between threaded drill rods. The rod-spinning device may include a drive gear with an open face. The drive gear may also be coupled to a plurality of drive pins. The rod-spinning device may include a carriage assembly including an open face for receiving and rotating about a drill rod. The carriage assembly may include a plurality of gripping lobes configured to be engaged and rotated by the drive pins about pivot pins. The drive gear may be configured to rotate relative to the carriage assembly to cause the drive pins to engage and rotate the gripping lobes.Type: GrantFiled: May 12, 2009Date of Patent: August 30, 2011Assignee: Longyear TM, Inc.Inventors: Trevor Lyndon Light, Emil Kolev, Michael Andreas Kontou
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Publication number: 20090277308Abstract: An open-faced rod-spinning device configured for making and/or breaking joints between threaded drill rods. The rod-spinning device may include a drive gear with an open face. The drive gear may also be coupled to a plurality of drive pins. The rod-spinning device may include a carriage assembly including an open face for receiving and rotating about a drill rod. The carriage assembly may include a plurality of gripping lobes configured to be engaged and rotated by the drive pins about pivot pins. The drive gear may be configured to rotate relative to the carriage assembly to cause the drive pins to engage and rotate the gripping lobes.Type: ApplicationFiled: May 12, 2009Publication date: November 12, 2009Applicant: LONGYEAR TM, INC.Inventors: Trevor Lyndon Light, Emil Kolev, Michael Andreas Kontou