Patents by Inventor A. Prasad
A. Prasad 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: 20250131301Abstract: A method includes obtaining, using at least one processing device of an electronic device, information defining a combinatorial logic gate design for a combinatorial logic circuit. The method also includes generating, using the at least one processing device, one or more polynomials representing operation of the combinatorial logic gate design. The method further includes mapping, using the at least one processing device, the one or more polynomials to one or more quantum polynomials, where each quantum polynomial has terms that are orthonormal. In addition, the method includes generating, using the at least one processing device, a quantum gate logic design based on the one or more quantum polynomials, where the quantum gate logic design is functionally equivalent to or better than the combinatorial logic gate design for the combinatorial logic circuit.Type: ApplicationFiled: August 27, 2024Publication date: April 24, 2025Inventors: Paul C. Hershey, Vikram A. Prasad, Marcus A. Teter, Brianne R. Hoppes, Michael T. Bahns
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Patent number: 12165907Abstract: Embodiments of the present disclosure generally relate to apparatus for substrate processing, and more specifically to apparatus for rotating substrates and to uses thereof. In an embodiment, an apparatus for rotating a substrate is provided. The apparatus includes a levitatable rotor comprising a plurality of magnets embedded therein, a plurality of gas bearings positioned to levitate the levitatable rotor, and a stator magnetically coupled to the levitatable rotor, the stator for producing a rotating magnetic field. Apparatus for processing a substrate with the apparatus for rotating substrates as well as methods of use are also described.Type: GrantFiled: November 19, 2020Date of Patent: December 10, 2024Assignee: Applied Materials, Inc.Inventors: Giridhar Kamesh, Vinodh Ramachandran, Chaitanya A. Prasad, Mohammad Aamir, Daniel C. Glover
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Publication number: 20240282556Abstract: Implementations of the present disclosure generally relate to an improved substrate support pedestal assembly. In one implementation, the substrate support pedestal assembly includes a shaft. The substrate support pedestal assembly further includes a substrate support pedestal, mechanically coupled to the shaft. The substrate support pedestal comprises substrate support plate coated on a top surface with a ceramic material.Type: ApplicationFiled: May 2, 2024Publication date: August 22, 2024Inventors: Lara HAWRYLCHAK, Chaitanya A. PRASAD
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Patent number: 11990321Abstract: Implementations of the present disclosure generally relate to an improved substrate support pedestal assembly. In one implementation, the substrate support pedestal assembly includes a shaft. The substrate support pedestal assembly further includes a substrate support pedestal, mechanically coupled to the shaft. The substrate support pedestal comprises substrate support plate coated on a top surface with a ceramic material.Type: GrantFiled: November 23, 2022Date of Patent: May 21, 2024Assignee: Applied Materials, Inc.Inventors: Lara Hawrylchak, Chaitanya A. Prasad
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Patent number: 11816012Abstract: Techniques for multi-domain systems integration and evaluation are disclosed, including: obtaining criteria associated with a strategic objective; determining that a first system, operating in a first operating domain, is only partially capable of satisfying a first criterion in the criteria; determining that a second system, operating in a second operating domain that is different from the first operating domain, is capable of augmenting the first system with respect to satisfying the first criterion; responsive to determining that the second system is capable of augmenting the first system with respect to satisfying the first criterion, modeling a multi-domain system including at least a first component from the first system and at least a second component from the second system; and generating a performance metric that objectively evaluates capabilities of the multi-domain system against the criteria associated with the strategic objective.Type: GrantFiled: October 13, 2021Date of Patent: November 14, 2023Assignee: RAYTHEON COMPANYInventors: Paul C. Hershey, Marcus A. Teter, Vikram A. Prasad
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Publication number: 20230125362Abstract: Systems, devices, methods, and computer-readable media for concurrent visualization of sensor and communications operations. A method can include receiving mission data indicating a target, a sensor, a communications system, and an operation to be performed regarding the target, identifying one or more operational layer, functional layer, and physical layer models for the sensor and communications system, and a physical layer model for weather, identifying, based on a comparison of the physical models of the sensor and communications system to a propagation equation, any gaps or inconsistencies between the physical models of the sensor and communications system and the propagation equation, and executing a simulation model resulting in a visual display of execution of the mission using the sensor and the communications system, the simulation model generated based on a filler model that fills any identified gaps or fixes any identified inconsistencies.Type: ApplicationFiled: October 21, 2021Publication date: April 27, 2023Inventors: Paul C. Hershey, Vikram A. Prasad, Marcus Alton Teter
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Publication number: 20230112257Abstract: Techniques for multi-domain systems integration and evaluation are disclosed, including: obtaining criteria associated with a strategic objective; determining that a first system, operating in a first operating domain, is only partially capable of satisfying a first criterion in the criteria; determining that a second system, operating in a second operating domain that is different from the first operating domain, is capable of augmenting the first system with respect to satisfying the first criterion; responsive to determining that the second system is capable of augmenting the first system with respect to satisfying the first criterion, modeling a multi-domain system including at least a first component from the first system and at least a second component from the second system; and generating a performance metric that objectively evaluates capabilities of the multi-domain system against the criteria associated with the strategic objective.Type: ApplicationFiled: October 13, 2021Publication date: April 13, 2023Inventors: Paul C. Hershey, Marcus A. Teter, Vikram A. Prasad
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Patent number: 11615944Abstract: Embodiments of the present disclosure generally relate to a process chamber for conformal oxidation of high aspect ratio structures. The process chamber includes a liner assembly located in a first side of a chamber body and two pumping ports located in a substrate support portion adjacent a second side of the chamber body opposite the first side. The liner assembly includes a flow divider to direct fluid flow away from a center of a substrate disposed in a processing region of the process chamber. The liner assembly may be fabricated from quartz minimize interaction with process gases, such as radicals. The liner assembly is designed to reduce flow constriction of the radicals, leading to increased radical concentration and flux. The two pumping ports can be individually controlled to tune the flow of the radicals through the processing region of the process chamber.Type: GrantFiled: March 27, 2018Date of Patent: March 28, 2023Assignee: Applied Materials, Inc.Inventors: Christopher S. Olsen, Eric Kihara Shono, Lara Hawrylchak, Agus Sofian Tjandra, Chaitanya A. Prasad, Sairaju Tallavarjula
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Publication number: 20230086640Abstract: Implementations of the present disclosure generally relate to an improved substrate support pedestal assembly. In one implementation, the substrate support pedestal assembly includes a shaft. The substrate support pedestal assembly further includes a substrate support pedestal, mechanically coupled to the shaft. The substrate support pedestal comprises substrate support plate coated on a top surface with a ceramic material.Type: ApplicationFiled: November 23, 2022Publication date: March 23, 2023Inventors: Lara HAWRYLCHAK, Chaitanya A. PRASAD
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Patent number: 11515130Abstract: Implementations of the present disclosure generally relate to an improved substrate support pedestal assembly. In one implementation, the substrate support pedestal assembly includes a shaft. The substrate support pedestal assembly further includes a substrate support pedestal, mechanically coupled to the shaft. The substrate support pedestal comprises substrate support plate coated on a top surface with a ceramic material.Type: GrantFiled: March 23, 2018Date of Patent: November 29, 2022Assignee: Applied Materials, Inc.Inventors: Lara Hawrylchak, Chaitanya A. Prasad
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Patent number: 11485870Abstract: The present disclosure is drawn to material sets and 3-dimensional printing systems that include a fusing agent. One example of a material set can include a fusing agent and a detailing agent. The fusing agent can include water, a carbon black pigment, and a water-soluble co-solvent in an amount from 20 wt % to 60 wt %. The detailing agent can include water and a black dye. In another example, a material set can include a fusing agent and a thermoplastic polymer powder.Type: GrantFiled: April 28, 2016Date of Patent: November 1, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Keshava A Prasad, Alexey S Kabalnov, Stephen G. Rudisill, Ali Emamjomeh, Michael Novick, Bernardo Gutierrez
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Publication number: 20220157643Abstract: Embodiments of the present disclosure generally relate to apparatus for substrate processing, and more specifically to apparatus for rotating substrates and to uses thereof. In an embodiment, an apparatus for rotating a substrate is provided. The apparatus includes a levitatable rotor comprising a plurality of magnets embedded therein, a plurality of gas bearings positioned to levitate the levitatable rotor, and a stator magnetically coupled to the levitatable rotor, the stator for producing a rotating magnetic field. Apparatus for processing a substrate with the apparatus for rotating substrates as well as methods of use are also described.Type: ApplicationFiled: November 19, 2020Publication date: May 19, 2022Inventors: Giridhar KAMESH, Vinodh RAMACHANDRAN, Chaitanya A. PRASAD, Mohammad AAMIR, Daniel C. GLOVER
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Publication number: 20210362410Abstract: In a three-dimensional printing method example, a polymeric or polymeric composite build material is applied. A fusing agent is applied on at least a portion of the build material. The fusing agent includes an aqueous or non-aqueous vehicle and an inorganic pigment dispersed in the aqueous or non-aqueous vehicle, wherein the inorganic pigment is selected from the group consisting of lanthanum hexaboride, tungsten bronzes, indium tin oxide, aluminum zinc oxide, ruthenium oxide, silver, gold, platinum, iron pyroxenes, modified iron phosphates (AxFeyPO4), modified copper pyrophosphates (AxCuyP2O7), and combinations thereof. The build material is exposed to electromagnetic radiation, thereby fusing the portion of the build material in contact with the fusing agent to form a layer.Type: ApplicationFiled: August 5, 2021Publication date: November 25, 2021Inventors: Stephen G. Rudisill, Alexey S. Kabalnov, Keshava A. Prasad, Sivapackia Ganapathiappan, Jake Wright, Vladek Kasperchik
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Patent number: 11173659Abstract: A coalescing agent for three-dimensional (3D) printing includes a co-solvent, a surfactant having a hydrophilic lipophilic balance (HLB) value that is less than 10, a carbon black pigment, a polymeric dispersant, and a balance of water. The co-solvent is present in an amount ranging from about 15 wt % to about 30 wt % of a total wt % of the coalescing agent. The surfactant is present in an amount ranging from about 0.5 wt % to about 1.4 wt % of the total wt % of the coalescing agent. The carbon black pigment is present in an amount ranging from about 3.0 wt % to about 6.0 wt % of the total wt % of the coalescing agent. The polymeric dispersant has a weight average molecular weight ranging from about 12,000 to about 20,000.Type: GrantFiled: February 28, 2020Date of Patent: November 16, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Keshava A. Prasad, Ali Emamjomeh, Glenn Thomas Haddick
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Patent number: 11110653Abstract: In a three-dimensional printing method example, a polymeric or polymeric composite build material is applied. A fusing agent is applied on at least a portion of the build material. The fusing agent includes an aqueous or non-aqueous vehicle and a plasmonic resonance absorber having absorption at wavelengths ranging from 800 nm to 4000 nm and having transparency at wavelengths ranging from 400 nm to 780 nm dispersed in the aqueous or non-aqueous vehicle. The build material is exposed to electromagnetic radiation, thereby fusing the portion of the build material in contact with the fusing agent to form a layer.Type: GrantFiled: October 23, 2015Date of Patent: September 7, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Stephen G. Rudisill, Alexey S. Kabalnov, Keshava A. Prasad, Sivapackia Ganapathiappan, Jake Wright, Vladek Kasperchik
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Patent number: 11104065Abstract: The present disclosure is drawn to material sets and 3-dimensional printing systems that include a fusing agent. One example of a material set can include a fusing agent and a detailing agent. The fusing agent can include water, a carbon black pigment, and a water-soluble co-solvent in an amount from 20 wt % to 60 wt %. The detailing agent can include water and a black dye. In another example, a material set can include a fusing agent and a thermoplastic polymer powder.Type: GrantFiled: April 28, 2016Date of Patent: August 31, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Keshava A Prasad, Alexey S Kabalnov, Stephen G. Rudisill, Ali Emamjomeh, Michael Novick, Bernardo Gutierrez
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Publication number: 20210249284Abstract: A substrate support pedestal connectable to a shaft includes a thermally conductive body, a first fluid channel disposed within an outer zone of the thermally conductive body, and a second fluid channel disposed within an inner zone of the thermally conductive body. The first fluid channel and the second fluid channel are not in fluid communication with each other and are thermally isolated from each other by a thermal barrier within the substrate support channel.Type: ApplicationFiled: February 12, 2020Publication date: August 12, 2021Inventors: Chaitanya A. PRASAD, Daniel C. GLOVER, Naman APURVA
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Publication number: 20210214570Abstract: The present disclosure is drawn to material sets and 3-dimensional printing systems that include a fusing agent. One example of a material set can include a fusing agent and a detailing agent. The fusing agent can include water, a carbon black pigment, and a water-soluble co-solvent in an amount from 20 wt % to 60 wt %. The detailing agent can include water and a black dye. In another example, a material set can include a fusing agent and a thermoplastic polymer powder.Type: ApplicationFiled: April 28, 2016Publication date: July 15, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Keshava A Prasad, Alexey S Kabalnov, Stephen G. Rudisill, Ali Emamjomeh, Michael Novick, Bernardo Gutierrez
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Patent number: 11004704Abstract: Embodiments described herein generally relate to a processing apparatus having a cover piece that participates in preheating a process gas. In one implementation, the cover piece includes an annulus. The annulus has an inner wall with a first height, an outer wall with a second height, and a top surface. The second height is greater than the first height. The cover piece also includes an inner lip disposed adjacent the inner wall, and a plurality of fins disposed on the top surface of the annulus. The cover piece and the plurality of fins are an opaque quartz material. The cover piece provides for more efficient heating of process gases, is composed of a material capable of withstanding process conditions while providing for more efficient and uniform processing, and has a low CTE reducing particle contamination due to excessive expansion during processing.Type: GrantFiled: March 15, 2018Date of Patent: May 11, 2021Assignee: Applied Materials, Inc.Inventors: Lara Hawrylchak, Chaitanya A. Prasad, Emre Cuvalci
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Patent number: 10731044Abstract: The present disclosure is drawn to coalescent inks and material sets for 3D printing. The coalescent ink can include a water-soluble near-infrared dye having a peak absorption wavelength from 800 nm to 1400 nm. The coalescent ink can also contain water.Type: GrantFiled: September 26, 2014Date of Patent: August 4, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sivapackia Ganapathiappan, Howard S. Tom, Lihua Zhao, Krzysztof Nauka, Yan Zhao, Hou T. Ng, Keshava A. Prasad