Patents by Inventor Ashish Pattekar
Ashish Pattekar 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: 11938537Abstract: A 3D printing system and methods to selectively pattern dense feedstock based on selective inhibition sintering (SIS). A sintering selectivity agent (inhibitor or promoter) is selectively deposited on a build layer according to the pattern boundary. When the layers are built-up and the part is sintered, the inhibited region remains unbound, thus defining the edge of the part. The material contain powder embedded in cohesive binder that make the adjacent layer adhere together. The build process involves forming the sheets of dense feedstock embedded binder, followed by depositing ink to promote selective sintering onto the layer. Once the build is complete, the process continues with the binder removal, sintering and finishing processes.Type: GrantFiled: August 1, 2022Date of Patent: March 26, 2024Assignee: Xerox CorporationInventors: Mahati Chintapalli, Sean Garner, Ashish Pattekar, Anne Plochowietz
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Publication number: 20240033823Abstract: A 3D printing system and methods to selectively pattern dense feedstock based on selective inhibition sintering (SIS). A sintering selectivity agent (inhibitor or promoter) is selectively deposited on a build layer according to the pattern boundary. When the layers are built-up and the part is sintered, the inhibited region remains unbound, thus defining the edge of the part. The material contain powder embedded in cohesive binder that make the adjacent layer adhere together. The build process involves forming the sheets of dense feedstock embedded binder, followed by depositing ink to promote selective sintering onto the layer. Once the build is complete, the process continues with the binder removal, sintering and finishing processes.Type: ApplicationFiled: August 1, 2022Publication date: February 1, 2024Inventors: Mahati CHINTAPALLI, Sean GARNER, Ashish PATTEKAR, Anne PLOCHOWIETZ
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Publication number: 20210353865Abstract: A device for delivery of particles into biological tissue includes at least one conduit and a propellant source fluidically coupled to the conduit and configured to deliver a propellant into the conduit. A particle source is configured to release elongated particles into the conduit, the elongated particles having a width, w, a length, l>w. The propellant source and the conduit are configured to propel the elongated particles in a collimated particle stream toward the biological tissue. An alignment mechanism is configured to align a longitudinal axis of the elongated particles to be substantially parallel to a direction of the particle stream in an alignment region of the conduit. The aligned elongated particles are ejected from the conduit and impact the biological tissue.Type: ApplicationFiled: August 2, 2021Publication date: November 18, 2021Inventors: David K. Biegelsen, Eugene M. Chow, Armin R. Volkel, Ashish Pattekar, Mandana Veiseh
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Patent number: 11077251Abstract: A device for delivery of particles into biological tissue includes at least one conduit and a propellant source fluidically coupled to the conduit and configured to deliver a propellant into the conduit. A particle source is configured to release elongated particles into the conduit, the elongated particles having a width, w, a length, l>w. The propellant source and the conduit are configured to propel the elongated particles in a collimated particle stream toward the biological tissue. An alignment mechanism is configured to align a longitudinal axis of the elongated particles to be substantially parallel to a direction of the particle stream in an alignment region of the conduit. The aligned elongated particles are ejected from the conduit and impact the biological tissue.Type: GrantFiled: September 25, 2019Date of Patent: August 3, 2021Assignee: Palo Alto Research Center IncorporatedInventors: David K. Biegelsen, Eugene M. Chow, Armin R. Volkel, Ashish Pattekar, Mandana Veiseh
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Patent number: 10821761Abstract: A system includes an unpatterned heater configured to pre-heat a thermochromic coating disposed on a substrate to a first temperature. The thermochromic coating has a threshold temperature at which the thermochromic material undergoes a color change. The system also includes a patterned heater comprising multiple heating elements configured to heat selected pixels of the thermochromic coating to a temperature at or above the threshold temperature according to a predetermined pattern. An air gap is maintained between the multiple heating elements and the thermochromic material while the patterned heater is heating the thermochromic material. The air in the air gap heated to a second temperature.Type: GrantFiled: December 5, 2019Date of Patent: November 3, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Ashish Pattekar, Palghat S. Ramesh, Antonio Williams, Joerg Martini
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Publication number: 20200324565Abstract: A system includes an unpatterned heater configured to pre-heat a thermochromic coating disposed on a substrate to a first temperature. The thermochromic coating has a threshold temperature at which the thermochromic material undergoes a color change. The system also includes a patterned heater comprising multiple heating elements configured to heat selected pixels of the thermochromic coating to a temperature at or above the threshold temperature according to a predetermined pattern. An air gap is maintained between the multiple heating elements and the thermochromic material while the patterned heater is heating the thermochromic material. The air in the air gap heated to a second temperature.Type: ApplicationFiled: December 5, 2019Publication date: October 15, 2020Inventors: Ashish Pattekar, Palghat S. Ramesh, Antonio Williams, Joerg Martini
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Patent number: 10717299Abstract: An imaging system includes first and second heaters configured to pre-heat a thermochromic coating. The first heater heats at least one of a substrate and the thermochromic coating disposed on the substrate. The second heater heats an ambient environment surrounding the thermochromic coating. The first and second heaters are configured to pre-heat the thermochromic coating to a temperature below a threshold temperature of the thermochromic coating. The system further includes a patterned heater configured to heat the pre-heated thermochromic coating to one or more temperatures above the threshold temperature according to a predetermined pattern.Type: GrantFiled: April 12, 2019Date of Patent: July 21, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Ashish Pattekar, Christopher L. Chua
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Patent number: 10649243Abstract: An article includes a substrate with at least first and second materials disposed in or over the substrate. The first material is a non-color changeable material of at least one first color and the second material is a thermochromic color changeable material activated to produce at least one second color different from the first color. Additive color mixing of the first and second colors produces at least one third color different from the first and second colors.Type: GrantFiled: July 30, 2018Date of Patent: May 12, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Warren B. Jackson, Christopher L. Chua, Ashish Pattekar
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Patent number: 10610144Abstract: A method and system for generating a personalized health management recommendation for a user. During operation, the system obtains first physiological data generated by a wearable device worn by the user that indicates a physiological condition of the user. The system then generates a prediction model for the user based on the first physiological data. Next, the system obtains real-time physiological data generated by the wearable device. The system may generate a prediction by analyzing the real-time physiological data to determine whether the user's physiological condition exceeds a threshold parameter according to the prediction model. Upon determining that the threshold parameter has been exceeded, the system may select a recommendation and send the recommendation message to the user's mobile device.Type: GrantFiled: August 19, 2015Date of Patent: April 7, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Hoda M. A. Eldardiry, Jonathan Rubin, Rui Abreu, Shane P. Ahern, Daniel G. Bobrow, David Garcia, Honglu Du, Ashish Pattekar
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Publication number: 20200033643Abstract: An article includes a substrate with at least first and second materials disposed in or over the substrate. The first material is a non-color changeable material of at least one first color and the second material is a thermochromic color changeable material activated to produce at least one second color different from the first color. Additive color mixing of the first and second colors produces at least one third color different from the first and second colors.Type: ApplicationFiled: July 30, 2018Publication date: January 30, 2020Inventors: Warren B. Jackson, Christopher L. Chua, Ashish Pattekar
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Publication number: 20200016339Abstract: A device for delivery of particles into biological tissue includes at least one conduit and a propellant source fluidically coupled to the conduit and configured to deliver a propellant into the conduit. A particle source is configured to release elongated particles into the conduit, the elongated particles having a width, w, a length, l>w. The propellant source and the conduit are configured to propel the elongated particles in a collimated particle stream toward the biological tissue. An alignment mechanism is configured to align a longitudinal axis of the elongated particles to be substantially parallel to a direction of the particle stream in an alignment region of the conduit. The aligned elongated particles are ejected from the conduit and impact the biological tissue.Type: ApplicationFiled: September 25, 2019Publication date: January 16, 2020Inventors: David K. Biegelsen, Eugene M. Chow, Armin R. Volkel, Ashish Pattekar, Mandana Veiseh
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Patent number: 10449297Abstract: A device for delivery of particles into biological tissue includes at least one conduit and a propellant source fluidically coupled to the conduit and configured to deliver a propellant into the conduit. A particle source is configured to release elongated particles into the conduit, the elongated particles having a width, w, a length, l>w. The propellant source and the conduit are configured to propel the elongated particles in a collimated particle stream toward the biological tissue. An alignment mechanism is configured to align a longitudinal axis of the elongated particles to be substantially parallel to a direction of the particle stream in an alignment region of the conduit. The aligned elongated particles are ejected from the conduit and impact the biological tissue.Type: GrantFiled: February 9, 2015Date of Patent: October 22, 2019Assignee: Palo Alto Research Center IncorporatedInventors: David K. Biegelsen, Eugene M. Chow, Armin R. Volkel, Ashish Pattekar, Mandana Veiseh
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Patent number: 10328688Abstract: A dampening fluid useful in offset ink printing applications contains water and a surfactant whose structure can be altered. The alteration in structure aids in reducing accumulation of the surfactant on the surface of an imaging member. The surfactant can be decomposed, switched between cis-trans states, or polymerizable with ink that is subsequently placed on the surface.Type: GrantFiled: April 25, 2017Date of Patent: June 25, 2019Assignees: Xerox Corporation, Palo Alto Research CorporationInventors: Naveen Chopra, Peter Gordon Odell, Steven E. Ready, Eric Peeters, Timothy D. Stowe, Ashish Pattekar, David K. Biegelsen
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Patent number: 10039885Abstract: A device for delivery of particles into biological tissue includes at least one conduit and a propellant source configured to release a propellant into the conduit. A source of first particles is configured to release first particles into the conduit. A source of second particles is configured to release second particles into the conduit. The second particles comprise a functional material intended to interact with the biological tissue and having a density less than a density of the first particles. The propellant source and the conduit are configured to propel the particles in a collimated stream toward the biological tissue. The first particles are configured to penetrate the biological tissue to create micropores that increase porosity of the biological tissue and the second particles configured to enter the porous biological tissue.Type: GrantFiled: February 9, 2015Date of Patent: August 7, 2018Assignee: Palo Alto Research Center IncorporatedInventors: Eugene M. Chow, David K. Biegelsen, Michael I Recht, Fatemeh Primoradi, Felicia Linn, Ashish Pattekar, Mandana Veiseh
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Patent number: 10018969Abstract: An elapsed timer device includes a timer element comprising a timer chamber, a timer chamber conditioning material disposed within the timer chamber, and a sensor arranged to sense a timer chemical within the timer chamber. The sensor indicates elapsed time in response to a threshold level of the chemical being present within the timer chamber. The timer chamber, timer chemical adsorption/desorption characteristics of the timer chamber conditioning material, and the sensor are configured so that an amount of the timer chemical within the timer chamber reaches the threshold level within a predetermined time after initialization of the timer element.Type: GrantFiled: December 15, 2016Date of Patent: July 10, 2018Assignee: Palo Alto Research Center IncorporatedInventors: Ramkumar Abhishek, Sourobh Raychaudhuri, Ashish Pattekar
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Patent number: 10006617Abstract: A light emitting diode (LED) light bulb includes a thermally conductive base and at least one LED assembly disposed on and thermally coupled to a surface of the base. The LED assembly includes at least one LED configured to generate light. A thermal optical diffuser defines an interior volume and the LED is arranged to emit light into the interior volume and through the thermal optical diffuser. The thermal optical diffuser is disposed on the surface of the base and extends from the base to a terminus on the light emitting side. The thermal optical diffuser is configured to include one or more openings that allow convective air flow between the interior volume of the thermal optical diffuser and ambient environment.Type: GrantFiled: November 20, 2017Date of Patent: June 26, 2018Assignee: Palo Alto Research Center IncorporatedInventors: Ashish Pattekar, Christopher Paulson, Ramkumar Abhishek, Patrick Yasuo Maeda
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Publication number: 20180122028Abstract: A computer-implemented system and method for automatic patient querying are provided. Information regarding a user is collected. An event associated with the user is identified as a trigger event based on the collected information. One or more questions regarding the event are identified and automatically sent to the user as a prompt for information based on the trigger. Feedback is received from the user in reply to the prompt.Type: ApplicationFiled: November 2, 2016Publication date: May 3, 2018Inventors: Ashish Pattekar, Ramkumar Abhishek, Robert T. Krivacic, Lester D. Nelson, David Taylor
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Publication number: 20180073713Abstract: A light emitting diode (LED) light bulb includes a thermally conductive base and at least one LED assembly disposed on and thermally coupled to a surface of the base. The LED assembly includes at least one LED configured to generate light. A thermal optical diffuser defines an interior volume and the LED is arranged to emit light into the interior volume and through the thermal optical diffuser. The thermal optical diffuser is disposed on the surface of the base and extends from the base to a terminus on the light emitting side. The thermal optical diffuser is configured to include one or more openings that allow convective air flow between the interior volume of the thermal optical diffuser and ambient environment.Type: ApplicationFiled: November 20, 2017Publication date: March 15, 2018Inventors: Ashish Pattekar, Christopher Paulson, Ramkumar Abhishek, Patrick Yasuo Maeda
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Patent number: 9857031Abstract: A light emitting diode (LED) lighting device includes at least one LED assembly comprising a substrate and two or more LEDs configured to generate light spaced apart along the substrate. A cured structural coating is disposed on at least a portion of the LED assembly, wherein the cured structural coating is configured to maintain the LED assembly in a predetermined shape. The substrate of the LED assembly may comprise an elongated and/or flexible substrate.Type: GrantFiled: December 12, 2016Date of Patent: January 2, 2018Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Janos Veres, Philipp Schmaelzle, Christopher Paulson, Ashish Pattekar, Patrick Y. Maeda
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Patent number: D806308Type: GrantFiled: October 12, 2015Date of Patent: December 26, 2017Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Ashish Pattekar, Christopher Paulson, Ramkumar Abhishek, Patrick Yasuo Maeda