Patents by Inventor J. David Smith
J. David Smith 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: 11933551Abstract: The invention is directed to an article with a liquid-impregnated surface, the surface having a matrix of features thereupon, spaced sufficiently close to stably contain a liquid therebetween or therewithin, and preferable also a thin film thereupon. The surface provides the article with advantageous non-wetting properties. Compared to previous non-wetting surfaces, which include a gas (e.g., air) entrained within surface textures, these liquid-impregnated surfaces are resistant to impalement and frost formation, and are therefore more robust.Type: GrantFiled: July 31, 2017Date of Patent: March 19, 2024Assignee: Massachusetts Institute of TechnologyInventors: Rajeev Dhiman, J. David Smith, Kripa K. Varanasi, Ernesto Reza-Garduño Cabello
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Publication number: 20240016985Abstract: Described herein are medical devices and medical implements with high lubricity to flesh (or biological fluid) and/or inhibited nucleation on its surface. The device has a surface comprising an impregnating liquid and a plurality of micro-scale and/or nano-scale solid features spaced sufficiently close to stably contain the impregnating liquid therebetween. The impregnating liquid fills spaces between said solid features, the surface stably contains the impregnating liquid between the solid features, and the impregnating liquid is substantially held in place between the plurality of solid features regardless of orientation of the surface.Type: ApplicationFiled: May 15, 2023Publication date: January 18, 2024Applicant: Massachusetts Institute of TechnologyInventors: J. David Smith, Rajeev Dhiman, Adam T. Paxson, Christopher J. Love, Brian R. Solomon, Kripa K. Varanasi
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Patent number: 11820914Abstract: Embodiments described herein relate generally to systems and methods for creating durable lubricious surfaces (DLS) via interfacial modification. The DLS can be prepared via a combination of a solid, a liquid, and an additive that modifies the interface between the DLS and a contact liquid, resulting in an interfacial layer that acts as a lubricant and/or protective coating between the DLS and the contact liquid. The lubricating effect created between the additive and the contact liquid results in enhanced slipperiness, as well as the protective properties that can help with durability of the DLS.Type: GrantFiled: May 20, 2021Date of Patent: November 21, 2023Assignee: LiquiGlide Inc.Inventors: C. Benjamin Renner, Bahar M. Alipour, Sruti Balasubramanian, Justin Kleingartner, J. David Smith, Kripa Kiran Varanasi
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Patent number: 11684705Abstract: Described herein are medical devices and medical implements with high lubricity to flesh (or biological fluid) and/or inhibited nucleation on its surface. The device has a surface comprising an impregnating liquid and a plurality of micro-scale and/or nano-scale solid features spaced sufficiently close to stably contain the impregnating liquid therebetween. The impregnating liquid fills spaces between said solid features, the surface stably contains the impregnating liquid between the solid features, and the impregnating liquid is substantially held in place between the plurality of solid features regardless of orientation of the surface.Type: GrantFiled: June 9, 2021Date of Patent: June 27, 2023Assignee: Massachusetts Institute of TechnologyInventors: J. David Smith, Rajeev Dhiman, Adam T. Paxson, Christopher J. Love, Brian R. Solomon, Kripa K. Varanasi
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Patent number: 11603222Abstract: Embodiments described herein relate to articles and methods for forming liquid surface films on the interior surfaces of containers for holding one or more products comprising one or more Bingham plastic materials. Bingham plastic materials behave as a solid under no or low shear stress, and behave as viscous liquids when an applied shear stress exceeds a yield stress. In some embodiments, a container for containing a product includes an interior surface and a liquid disposed on the interior surface. Before introduction of a product into a container, the liquid may be surrounded by air. The liquid-air interface in contact with the interior surface makes a contact angle, ?os(a), with respect to the interior surface of the container, of about 0°. After a product has been introduced to the container, the liquid is at least partially covered by the product. The liquid-product interface in contact with the interior surface, makes a contact angle, ?os(p), with respect to the interior surface, of less about 60°.Type: GrantFiled: November 16, 2020Date of Patent: March 14, 2023Assignee: LiquiGlide Inc.Inventors: J. David Smith, Kripa Varanasi, Brian Jordan, Carsten Boers
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Patent number: 11492500Abstract: In certain embodiments, the invention is directed to apparatus comprising a liquid-impregnated surface, said surface comprising an impregnating liquid and a matrix of solid features spaced sufficiently close to stably contain the impregnating liquid therebetween or therewithin, and methods thereof. In some embodiments, one or both of the following holds: (i) 0<??0.25, where ? is a representative fraction of the projected surface area of the liquid-impregnated surface corresponding to non-submerged solid at equilibrium; and (ii) Sow(a)<0, where Sow(a) is spreading coefficient, defined as ?wa??wo??oa, where ? is the interfacial tension between the two phases designated by subscripts w, a, and o, where w is water, a is air, and o is the impregnating liquid.Type: GrantFiled: April 26, 2017Date of Patent: November 8, 2022Assignee: Massachusetts Institute of TechnologyInventors: J. David Smith, Rajeev Dhiman, Kripa K. Varanasi
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Publication number: 20220126001Abstract: Described herein are medical devices and medical implements with high lubricity to flesh (or biological fluid) and/or inhibited nucleation on its surface. The device has a surface comprising an impregnating liquid and a plurality of micro-scale and/or nano-scale solid features spaced sufficiently close to stably contain the impregnating liquid therebetween. The impregnating liquid fills spaces between said solid features, the surface stably contains the impregnating liquid between the solid features, and the impregnating liquid is substantially held in place between the plurality of solid features regardless of orientation of the surface.Type: ApplicationFiled: June 9, 2021Publication date: April 28, 2022Applicant: Massachusetts Institute of TechnologyInventors: J. David Smith, Rajeev Dhiman, Adam T. Paxson, Christopher J. Love, Brian R. Solomon, Kripa K. Varanasi
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Publication number: 20210291243Abstract: In certain embodiments, the invention is directed to apparatus comprising a liquid-impregnated surface, said surface comprising an impregnating liquid and a matrix of solid features spaced sufficiently close to stably contain the impregnating liquid therebetween or therewithin, and methods thereof. In some embodiments, one or both of the following holds: (i) 0<??0.25, where ? is a representative fraction of the projected surface area of the liquid-impregnated surface corresponding to non-submerged solid at equilibrium; and (ii) Sow(a)<0, where Sow(a) is spreading coefficient, defined as ?wa??wo??oa, where ? is the interfacial tension between the two phases designated by subscripts w, a, and o, where w is water, a is air, and o is the impregnating liquid.Type: ApplicationFiled: December 1, 2020Publication date: September 23, 2021Applicant: Massachusetts Institute of TechnologyInventors: J. David Smith, Sushant Anand, Srinivas Prasad Bengaluru Subramanyam, Konrad Rykaczewski, Kripa K. Varanasi
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Publication number: 20210269652Abstract: Embodiments described herein relate generally to systems and methods for creating durable lubricious surfaces (DLS) via interfacial modification. The DLS can be prepared via a combination of a solid, a liquid, and an additive that modifies the interface between the DLS and a contact liquid, resulting in an interfacial layer that acts as a lubricant and/or protective coating between the DLS and the contact liquid. The lubricating effect created between the additive and the contact liquid results in enhanced slipperiness, as well as the protective properties that can help with durability of the DLS.Type: ApplicationFiled: May 20, 2021Publication date: September 2, 2021Inventors: C. Benjamin RENNER, Bahar M. ALIPOUR, Sruti BALASUBRAMANIAN, Justin KLEINGARTNER, J. David SMITH, Kripa Kiran VARANASI
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Publication number: 20210269180Abstract: Embodiments described herein relate to articles and methods for forming liquid surface films on the interior surfaces of containers for holding one or more products comprising one or more Bingham plastic materials. Bingham plastic materials behave as a solid under no or low shear stress, and behave as viscous liquids when an applied shear stress exceeds a yield stress. In some embodiments, a container for containing a product includes an interior surface and a liquid disposed on the interior surface. Before introduction of a product into a container, the liquid may be surrounded by air. The liquid-air interface in contact with the interior surface makes a contact angle, ?os(a), with respect to the interior surface of the container, of about 0°. After a product has been introduced to the container, the liquid is at least partially covered by the product. The liquid-product interface in contact with the interior surface, makes a contact angle, ?os(p), with respect to the interior surface, of less about 60°.Type: ApplicationFiled: November 16, 2020Publication date: September 2, 2021Applicant: LiquiGlide Inc.Inventors: J. David SMITH, Kripa VARANASI, Brian JORDAN, Carsten BOERS
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Patent number: 11058803Abstract: Described herein are medical devices and medical implements with high lubricity to flesh (or biological fluid) and/or inhibited nucleation on its surface. The device has a surface comprising an impregnating liquid and a plurality of micro-scale and/or nano-scale solid features spaced sufficiently close to stably contain the impregnating liquid therebetween. The impregnating liquid fills spaces between said solid features, the surface stably contains the impregnating liquid between the solid features, and the impregnating liquid is substantially held in place between the plurality of solid features regardless of orientation of the surface.Type: GrantFiled: March 31, 2017Date of Patent: July 13, 2021Assignee: Massachusetts Institute of TechnologyInventors: J. David Smith, Rajeev Dhiman, Adam T. Paxson, Christopher J. Love, Brian R. Solomon, Kripa K. Varanasi
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Patent number: 11046853Abstract: Embodiments described herein relate generally to systems and methods for creating durable lubricious surfaces (DLS) via interfacial modification. The DLS can be prepared via a combination of a solid, a liquid, and an additive that modifies the interface between the DLS and a contact liquid, resulting in an interfacial layer that acts as a lubricant and/or protective coating between the DLS and the contact liquid. The lubricating effect created between the additive and the contact liquid results in enhanced slipperiness, as well as the protective properties that can help with durability of the DLS.Type: GrantFiled: August 14, 2019Date of Patent: June 29, 2021Assignee: LiquiGlide Inc.Inventors: C. Benjamin Renner, Bahar M. Alipour, Sruti Balasubramanian, Justin Kleingartner, J. David Smith, Kripa Kiran Varanasi
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Patent number: 10882085Abstract: In certain embodiments, the invention is directed to apparatus comprising a liquid-impregnated surface, said surface comprising an impregnating liquid and a matrix of solid features spaced sufficiently close to stably contain the impregnating liquid therebetween or therewithin, and methods thereof. In some embodiments, one or both of the following holds: (i) 0<??0.25, where ? is a representative fraction of the projected surface area of the liquid-impregnated surface corresponding to non-submerged solid at equilibrium; and (ii) Sow(a)<0, where Sow(a) is spreading coefficient, defined as ?wa??wo??oa, where ? is the interfacial tension between the two phases designated by subscripts w, a, and o, where w is water, a is air, and o is the impregnating liquid.Type: GrantFiled: November 19, 2013Date of Patent: January 5, 2021Assignee: Massachusetts Institute of TechnologyInventors: J. David Smith, Sushant Anand, Srinivas Prasad Bengaluru Subramanyam, Konrad Rykaczewski, Kripa K. Varanasi
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Patent number: 10870505Abstract: Embodiments described herein relate to articles and methods for forming liquid surface films on the interior surfaces of containers for holding one or more products comprising one or more Bingham plastic materials. Bingham plastic materials behave as a solid under no or low shear stress, and behave as viscous liquids when an applied shear stress exceeds a yield stress. In some embodiments, a container for containing a product includes an interior surface and a liquid disposed on the interior surface. Before introduction of a product into a container, the liquid may be surrounded by air. The liquid-air interface in contact with the interior surface makes a contact angle, ?os(a), with respect to the interior surface of the container, of about 0°. After a product has been introduced to the container, the liquid is at least partially covered by the product. The liquid-product interface in contact with the interior surface, makes a contact angle, ?os(p), with respect to the interior surface, of less about 60°.Type: GrantFiled: September 17, 2014Date of Patent: December 22, 2020Assignee: LiquiGlide Inc.Inventors: J. David Smith, Kripa Varanasi, Brian Jordan, Carsten Boers
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Publication number: 20200040195Abstract: Embodiments described herein relate generally to systems and methods for creating durable lubricious surfaces (DLS) via interfacial modification. The DLS can be prepared via a combination of a solid, a liquid, and an additive that modifies the interface between the DLS and a contact liquid, resulting in an interfacial layer that acts as a lubricant and/or protective coating between the DLS and the contact liquid. The lubricating effect created between the additive and the contact liquid results in enhanced slipperiness, as well as the protective properties that can help with durability of the DLS.Type: ApplicationFiled: August 14, 2019Publication date: February 6, 2020Inventors: C. Benjamin RENNER, Bahar M. ALIPOUR, Sruti BALASUBRAMANIAN, Justin KLEINGARTNER, J. David SMITH, Kripa Kiran VARANASI
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Publication number: 20190351601Abstract: In some embodiments, a method of producing a liquid-impregnated surface includes forming a solid particle suspension including a plurality of solid particles with an average dimension of between about 5 nm and about 200 ?m. The solid particle suspension is applied to a surface by spray-depositing the solid particle suspension onto the surface. An impregnating liquid is also applied to the surface. The plurality of solid particles and the impregnating liquid collectively form a liquid-impregnated surface. The impregnating liquid can be applied after the solid particle suspension is applied, or the solid particle suspension can include the impregnating liquid, such that the solid particle suspension and the impregnating liquid are concurrently spray-deposited onto the surface.Type: ApplicationFiled: July 31, 2019Publication date: November 21, 2019Inventors: Kripa VARANASI, J. David SMITH, Jose YAGUE, Brian JORDAN, Charles W. HIBBEN, Jiapeng XU, Tao CONG
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Patent number: 10428222Abstract: Embodiments described herein relate generally to systems and methods for creating durable lubricious surfaces (DLS) via interfacial modification. The DLS can be prepared via a combination of a solid, a liquid, and an additive that modifies the interface between the DLS and a contact liquid, resulting in an interfacial layer that acts as a lubricant and/or protective coating between the DLS and the contact liquid. The lubricating effect created between the additive and the contact liquid results in enhanced slipperiness, as well as the protective properties that can help with durability of the DLS.Type: GrantFiled: November 9, 2018Date of Patent: October 1, 2019Assignee: LiquiGlide Inc.Inventors: C. Benjamin Renner, Bahar M. Alipour, Sruti Balasubramanian, Justin Kleingartner, J. David Smith, Kripa Kiran Varanasi
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Patent number: 10421866Abstract: Embodiments described herein relate generally to systems and methods for creating durable lubricious surfaces (DLS) via interfacial modification. The DLS can be prepared via a combination of a solid, a liquid, and an additive that modifies the interface between the DLS and a contact liquid, resulting in an interfacial layer that acts as a lubricant and/or protective coating between the DLS and the contact liquid. The lubricating effect created between the additive and the contact liquid results in enhanced slipperiness, as well as the protective properties that can help with durability of the DLS.Type: GrantFiled: November 9, 2018Date of Patent: September 24, 2019Assignee: LiquiGlide Inc.Inventors: C. Benjamin Renner, Bahar M. Alipour, Sruti Balasubramanian, Justin Kleingartner, J. David Smith, Kripa Kiran Varanasi
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Patent number: 10294756Abstract: This invention relates generally to articles, devices, and methods for gas hydrate mitigation in deep-sea drilling applications. In certain embodiments, hydrate-phobic surfaces are provided that ensure passive enhancement of flow assurance and prevention of catastrophic failures in deep-sea oil and gas operations.Type: GrantFiled: August 25, 2011Date of Patent: May 21, 2019Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: J. David Smith, Kripa K. Varanasi, Gareth H. McKinley, Robert E. Cohen, Adam J. Meuler, Harrison L. Bralower
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Publication number: 20190077968Abstract: Embodiments described herein relate generally to systems and methods for creating durable lubricious surfaces (DLS) via interfacial modification. The DLS can be prepared via a combination of a solid, a liquid, and an additive that modifies the interface between the DLS and a contact liquid, resulting in an interfacial layer that acts as a lubricant and/or protective coating between the DLS and the contact liquid. The lubricating effect created between the additive and the contact liquid results in enhanced slipperiness, as well as the protective properties that can help with durability of the DLS.Type: ApplicationFiled: November 9, 2018Publication date: March 14, 2019Inventors: C. Benjamin RENNER, Bahar M. ALIPOUR, Sruti BALASUBRAMANIAN, Justin KLEINGARTNER, J. David SMITH, Kripa Kiran VARANASI