Patents by Inventor Alexander Krichevsky
Alexander Krichevsky 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: 11753323Abstract: The present disclosure provides an in-situ method for removing sulfates. The method comprises delivering at least one low molecular weight organic compound (LMWOC) to soil or groundwater to attain a concentration of the LMWOC of 750-3000 mg/L, such as 1000-2000 mg/L, or about 1500 mg/L, especially whereby sulfate is reduced to below 250 mg/L in the soil or groundwater. The method may further comprise contacting the soil or groundwater with an oxidizer, such as hydrogen peroxide, whereby the concentration of metals or metalloids is reduced in the soil or groundwater.Type: GrantFiled: July 26, 2021Date of Patent: September 12, 2023Assignee: COMMERCIAL LIABILITY PARTNERS, LLCInventors: Ronald DuWayne Froh, Jesse Ronald Froh, Nizette Consolazio, Eric R. Calderón-Ortiz, Alexander Krichevsky
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Publication number: 20230204877Abstract: Technologies for beam expansion and collimation for photonic integrated circuits (PICs) are disclosed. In one embodiment, an ancillary die is bonded to a PIC die. Vertical couplers in the PIC die direct light from waveguides to flat mirrors on a top side of the ancillary die. The flat mirrors reflect the light towards curved mirrors defined in the bottom surface of the ancillary die. The curved mirrors collimate the light from the waveguides. In another embodiment, a cavity is formed in a PIC die, and curved mirrors are formed in the cavity. Light beams from waveguides in the PIC die are directed to the curved mirrors, which collimate the light beams.Type: ApplicationFiled: December 23, 2021Publication date: June 29, 2023Applicant: Intel CorporationInventors: John M. Heck, Haisheng Rong, Harel Frish, Ankur Agrawal, Boping Xie, Randal S. Appleton, Hari Mahalingam, Alexander Krichevsky, Pooya Tadayon, Ling Liao, Eric J. M. Moret
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Publication number: 20230204876Abstract: Technologies for coupling to and from a photonic integrated circuit (PIC) with an optical isolator are disclosed. In one embodiment, light beams from waveguides on a PIC die are reflected towards flat mirrors on the bottom surface of the PIC die. The flat mirrors reflect the light towards curved mirrors defined in a top surface of the PIC die, which collimate the beam and direct the collimated beams out the bottom surface of the PIC die. An optical isolator below the PIC die can allow the beams to pass while blocking beams in the opposite direction.Type: ApplicationFiled: December 23, 2021Publication date: June 29, 2023Applicant: Intel CorporationInventors: Alexander Krichevsky, Boping Xie
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Publication number: 20220404546Abstract: A photonic integrated circuit (PIC) package comprising a first die, the first die comprising a first optical waveguide and a first trench extending from a first edge of the first die to the first optical waveguide. The first trench is aligned with the first optical waveguide. A second die comprises a second optical waveguide and a second trench extending from a second edge of the second die to the second optical waveguide. The second trench is aligned with the second optical waveguide. An optical wire comprising an uncladded glass fiber comprises a first terminal portion extending within the first trench and a second terminal portion extending within the second trench. The first terminal portion is aligned with the first optical waveguide and the second terminal portion is aligned with the second optical waveguide.Type: ApplicationFiled: June 18, 2021Publication date: December 22, 2022Applicant: Intel CorporationInventors: Alexander Krichevsky, Boping Xie
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Publication number: 20220107472Abstract: An apparatus includes an aperture disposed through an outer layer, a folding prism adjacent to the aperture, and a multi-mode optical fiber on which the folding prism is disposed. The aperture and the folding prism are insertable into a trench disposed through a waveguide of an edge emitting integrated laser, the aperture is configured to allow a light beam that is emitted by the waveguide, through the aperture, and the folding prism is configured to redirect the allowed light beam to the multi-mode optical fiber.Type: ApplicationFiled: December 17, 2021Publication date: April 7, 2022Inventors: Alexander KRICHEVSKY, Christopher SEIBERT, David GOLD, Hari MAHALINGAM, Jonathan DOYLEND
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Patent number: 11251228Abstract: Optical receiver packages and device assemblies that include photodetector (PD) chips having focus lenses monolithically integrated on PD die backsides are disclosed. An example receiver package includes a support structure, a PD die, and an optical input device. The PD die includes a PD, integrated proximate to a first face of the PD die, and further includes a lens, integrated on, or proximate to, an opposite second face. The first face of the PD die faces the support structure, while the second face (“backside”) faces the optical input device. The optical receiver architectures described herein may provide an improvement for the optical alignment tolerance issues, especially for high-speed operation in which the active aperture of the PD may have to be very small. Furthermore, architectures described herein advantageously enable integrating a focus lens in a PD die that may be coupled to the support structure in a flip-chip arrangement.Type: GrantFiled: December 19, 2018Date of Patent: February 15, 2022Assignee: Intel CorporationInventors: Boping Xie, Ansheng Liu, Olufemi Isiade Dosunmu, Alexander Krichevsky, Kelly Christopher Magruder, Harel Frish
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Publication number: 20220033290Abstract: The present disclosure provides an in-situ method for removing sulfates. The method comprises delivering at least one low molecular weight organic compound (LMWOC) to soil or groundwater to attain a concentration of the LMWOC of 750-3000 mg/L, such as 1000-2000 mg/L, or about 1500 mg/L, especially whereby sulfate is reduced to below 250 mg/L in the soil or groundwater. The method may further comprise contacting the soil or groundwater with an oxidizer, such as hydrogen peroxide, whereby the concentration of metals or metalloids is reduced in the soil or groundwater.Type: ApplicationFiled: July 26, 2021Publication date: February 3, 2022Inventors: Ronald DuWayne FROH, Jesse Ronald FROH, Nizette CONSOLAZIO, Eric R. CALDERÓN-ORTIZ, Alexander KRICHEVSKY
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Publication number: 20220030769Abstract: Methods, storage media and systems for trimming objects are disclosed. Some embodiments may include: generating a computerized image of an object to be trimmed, designating a part of the object to trim off, generating at least one output command to guide a trimming hardware and trimming the designated part of the object.Type: ApplicationFiled: July 26, 2021Publication date: February 3, 2022Inventors: Alexander KRICHEVSKY, Daniel SAUNDERS
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Publication number: 20220011519Abstract: In one embodiment, a package includes: a substrate; a photonic integrated circuit (PIC) adapted to the substrate, the PIC including at least one optical circuit, a first plurality of waveguides, a second plurality of waveguides, and a laser to output optical energy via the first plurality of waveguides; and a prism assembly adapted to the substrate to reflect the optical energy output from the first plurality of waveguides to the second plurality of waveguides, the prism assembly including a prism and at least one isolator. Other embodiments are described and claimed.Type: ApplicationFiled: September 23, 2021Publication date: January 13, 2022Inventors: Boping Xie, Jonathan Doylend, Alexander Krichevsky
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Publication number: 20210132306Abstract: An optical system can include a optical receiver comprising an optical waveguide, an optical lid adjacent the waveguide, and a reflective surface proximate an output of the optical waveguide to direct light from the waveguide towards an output of the optical lid. The optical system can also include a photodetector (PD) die comprising a substrate, a concave mirror, and a photodetector. The concave mirror is formed on a first side of the substrate and the photodetector is disposed on a second side of the substrate, the first side opposite the second side, wherein the photodetector is disposed on the second side of the PD die offset from the optical axis of the optical element.Type: ApplicationFiled: December 11, 2020Publication date: May 6, 2021Applicant: Intel CorporationInventors: Alexander Krichevsky, John M. Heck
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Publication number: 20210058159Abstract: Embodiments of the present disclosure are directed to an optical transceiver within a single device. The optical transceiver incorporates an optical isolator, thus eliminating the need for an external isolator unit. In embodiments, transmitter channels and receiver channels share a single lens array and incorporate a compensator block to equalize the transmitter and receiver optical signals in the transceiver. Other embodiments may be described and/or claimed.Type: ApplicationFiled: October 20, 2020Publication date: February 25, 2021Inventors: Alexander Krichevsky, Boping Xie
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Patent number: 10852491Abstract: There is disclosed in one example a computing apparatus, including: a fiber-optic transmitter including a laser source; an input waveguide to receive a modulated laser pulse from the laser source; an output waveguide to direct the modulated laser pulse to an external communication element; and an isolator bridge optically coupled to the input waveguide and output waveguide, the isolator bridge including an input lens, an input-side folding prism, an isolator element, an output-side folding prism, and an output lens, wherein an input light pulse through the input lens is to be redirected by the input-side folding prism through the isolator element to the output-side folding prism, and redirected by the output-side folding prism through the output lens.Type: GrantFiled: December 20, 2018Date of Patent: December 1, 2020Assignee: Intel CorporationInventor: Alexander Krichevsky
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Patent number: 10360939Abstract: Disclosed herein are embodiments of a heat-assisted magnetic recording (HAMR) device comprising a waveguide and a near-field transducer (NFT) coupled to the waveguide. The NFT comprises a core layer comprising an insulator, a first metal layer adjacent to the core layer, and a second layer adjacent to the first metal layer, wherein the second layer comprises a material that is substantially mechanically and thermally stable and thereby functions as a hard jacket to mitigate deformation of the NFT. The first metal layer may comprise a plasmonic metal, such as gold. The second layer may comprise tungsten, chromium, or a dielectric material.Type: GrantFiled: December 23, 2017Date of Patent: July 23, 2019Assignees: Western Digital Technologies, Inc., The Provost, Fellows, Scholars and other Members of Board of Trinity College DublinInventors: Alexander Krichevsky, Frank Bello, Christopher Wolf, Fenghua Zong, Daniel Wolf, David McCloskey, Kyle Ballantine, John Donegan
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Publication number: 20190198053Abstract: Disclosed herein are embodiments of a heat-assisted magnetic recording (HAMR) device comprising a waveguide and a near-field transducer (NFT) coupled to the waveguide. The NFT comprises a core layer comprising an insulator, a first metal layer adjacent to the core layer, and a second layer adjacent to the first metal layer, wherein the second layer comprises a material that is substantially mechanically and thermally stable and thereby functions as a hard jacket to mitigate deformation of the NFT. The first metal layer may comprise a plasmonic metal, such as gold. The second layer may comprise tungsten, chromium, or a dielectric material.Type: ApplicationFiled: December 23, 2017Publication date: June 27, 2019Applicants: Western Digital Technologies, Inc., The Provost, Fellows, Foundation Scholars and the other members of the Board, of the College of theInventors: Alexander KRICHEVSKY, Frank BELLO, Christopher WOLF, Fenghua ZONG, Daniel WOLF, David MCCLOSKEY, Kyle BALLANTINE, John DONEGAN
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Publication number: 20190146164Abstract: There is disclosed in one example a computing apparatus, including: a fiber-optic transmitter including a laser source; an input waveguide to receive a modulated laser pulse from the laser source; an output waveguide to direct the modulated laser pulse to an external communication element; and an isolator bridge optically coupled to the input waveguide and output waveguide, the isolator bridge including an input lens, an input-side folding prism, an isolator element, an output-side folding prism, and an output lens, wherein an input light pulse through the input lens is to be redirected by the input-side folding prism through the isolator element to the output-side folding prism, and redirected by the output-side folding prism through the output lens.Type: ApplicationFiled: December 20, 2018Publication date: May 16, 2019Applicant: Intel CorporationInventor: Alexander Krichevsky
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Publication number: 20190123109Abstract: Optical receiver packages and device assemblies that include photodetector (PD) chips having focus lenses monolithically integrated on PD die backsides are disclosed. An example receiver package includes a support structure, a PD die, and an optical input device. The PD die includes a PD, integrated proximate to a first face of the PD die, and further includes a lens, integrated on, or proximate to, an opposite second face. The first face of the PD die faces the support structure, while the second face (“backside”) faces the optical input device. The optical receiver architectures described herein may provide an improvement for the optical alignment tolerance issues, especially for high-speed operation in which the active aperture of the PD may have to be very small. Furthermore, architectures described herein advantageously enable integrating a focus lens in a PD die that may be coupled to the support structure in a flip-chip arrangement.Type: ApplicationFiled: December 19, 2018Publication date: April 25, 2019Applicant: Intel CorporationInventors: Boping Xie, Ansheng Liu, Olufemi Isiade Dosunmu, Alexander Krichevsky, Kelly Christopher Magruder, Harel Frish
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Patent number: 10249336Abstract: Disclosed herein are embodiments of a heat-assisted magnetic recording (HAMR) device comprising a waveguide and a near-field transducer (NFT) coupled to the waveguide in a direct-fire configuration. The NFT comprises an insulator core encased in a metal portion. The insulator core comprises a rectangular portion and a tapered portion, wherein the rectangular portion is between the waveguide and the tapered portion. The metal portion comprises a plasmonic metal.Type: GrantFiled: December 23, 2017Date of Patent: April 2, 2019Assignees: Western Digital Technologies, Inc., The Provost, Fellows, Scholars and other Members of Board of Trinity College DublinInventors: Alexander Krichevsky, Frank Bello, Christopher Wolf, Fenghua Zong, Daniel Wolf, David McCloskey, Kyle Ballantine, John Donegan
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Patent number: 9944907Abstract: The present disclosure relates to mutated genes of the LUX operon and their use in producing autoluminescent plants and bacteria exhibiting improved light output.Type: GrantFiled: April 15, 2015Date of Patent: April 17, 2018Assignee: BioGlow LLCInventor: Alexander Krichevsky
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Publication number: 20170335294Abstract: Present invention discloses plants and plant cells comprising Streptomyces thermoautotrophicus nitrogenase and capable able of nitrogen fixation. Methods to generate said plants and plant cells are disclosed. This invention is instrumental for producing plants, including agriculturally important crops, with reduced or abolished requirements for nitrogen fertilizer.Type: ApplicationFiled: May 4, 2015Publication date: November 23, 2017Inventor: Alexander KRICHEVSKY
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Publication number: 20170044505Abstract: The present disclosure relates to mutated genes of the LUX operon and their use in producing autoluminescent plants and bacteria exhibiting improved light output.Type: ApplicationFiled: April 15, 2015Publication date: February 16, 2017Inventor: Alexander Krichevsky