Patents by Inventor Ian D. ROBERTSON
Ian D. ROBERTSON 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: 20240052645Abstract: A method of preparing sound dampened flooring comprises providing a flooring substrate, applying a coating of a liquid acrylic sound damping composition to a surface of the flooring substrate, drying the coating, and optionally, forming one or more additional layers on the coating. A sound dampened flooring is also disclosed.Type: ApplicationFiled: December 2, 2021Publication date: February 15, 2024Inventors: Manoj Nerkar, Ian D. Robertson, Manoj Thota
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Publication number: 20240043700Abstract: The present invention relates to a composition comprising an aqueous dispersion of acrylic polymer particles; paraffin wax; graphite particles; and extender particles. The composition is useful for making coatings with low water pickup for liquid applied sound damping applications.Type: ApplicationFiled: November 19, 2021Publication date: February 8, 2024Inventors: Ian D. Robertson, Michael W. Leonard, Ray E. Drumright, James C. Bohling
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Publication number: 20230058018Abstract: The present invention relates to a composition comprising an aqueous dispersion of multiphase polymer particles comprising first polymer particles having a Tg of less than 30° C. and second polymer particles having a Tg in the range of from 100° C. to 110° C., wherein the second polymer particles are phase separated from and occluded within the first polymer particles; wherein the number average molecular weight (Mn) of the multiphase polymer particles is in the range of from 9,000 to 25,000 g/mole; and wherein the second polymer particles comprise at least 95 weight percent methyl methacrylate. The composition of the present invention is useful in a formulation that can be used to prepare a water-resistant blister free LASD coating with little or no surface defects.Type: ApplicationFiled: November 19, 2020Publication date: February 23, 2023Inventors: James C. Bohling, Wei Gao, Justin Gimbal, Ian D. Robertson
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Publication number: 20230052817Abstract: The present invention relates to a process for preparing an aqueous dispersion of multiphase occluded polymer particles comprising the steps of a) contacting, under emulsion polymerization conditions, first monomers and a chain transfer agent to form an aqueous dispersion of first polymer particles having a Tg in the range of from ?30° C. to 30° C.; then b) contacting the aqueous dispersion of first polymer particles with a second monomer under emulsion polymerization conditions to form an aqueous dispersion of second polymer particles occluded within the first polymer particles, wherein the first monomers a phosphorus acid monomer or a salt thereof; and the second monomer comprises at least 90 weight percent methyl methacrylate. The aqueous dispersion of occluded polymer particles arising from the process of the present invention is useful in a formulation that can be used to prepare a water-resistant blister free LASD coating.Type: ApplicationFiled: November 19, 2020Publication date: February 16, 2023Inventors: James C. Bohling, Justin Gimbal, Ian D. Robertson
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Patent number: 11396585Abstract: A method of forming a void, channel and/or vascular network in a polymeric matrix comprises providing a pre-vascularized structure that includes a matrix material and a sacrificial material embedded in the matrix material in a predetermined pattern, where the matrix material comprises a monomer and the sacrificial material comprises a polymer. A region of the matrix material is activated to initiate an exothermic polymerization reaction and generate a self-propagating polymerization front. As the polymerization front propagates through the matrix material and polymerizes the monomer, heat from the exothermic reaction simultaneously degrades the sacrificial material into a gas-phase and/or liquid-phase byproduct. Thus, one or more voids or channels having the predetermined pattern are rapidly formed in the matrix material.Type: GrantFiled: March 5, 2020Date of Patent: July 26, 2022Assignee: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOISInventors: Nancy R. Sottos, Mostafa Yourdkhani, Ian D. Robertson, Mayank Garg, Jeffrey S. Moore
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Publication number: 20210238330Abstract: The present disclosure provides a novel method of 3D printing using frontal polymerization chemistry. This method enables the printing of tough, high quality thermosets in a short time with the option of adding fiber reinforcement. As such, it facilitates fabrication of mechanically robust 3D-printed devices and structures.Type: ApplicationFiled: January 14, 2021Publication date: August 5, 2021Applicant: The Board of Trustees of the University of IllinoisInventors: Jeffrey S. MOORE, Scott R. WHITE, Ian D. ROBERTSON, Nancy R. SOTTOS, Jia E. AW
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Patent number: 10920002Abstract: The present disclosure provides a novel method of 3D printing using frontal polymerization chemistry. This method enables the printing of tough, high quality thermosets in a short time with the option of adding fiber reinforcement. As such, it facilitates fabrication of mechanically robust 3D-printed devices and structures.Type: GrantFiled: May 14, 2018Date of Patent: February 16, 2021Assignee: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOISInventors: Jeffrey S. Moore, Scott R. White, Ian D. Robertson, Nancy R. Sottos, Jia En Aw
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Publication number: 20200283594Abstract: A method of forming a void, channel and/or vascular network in a polymeric matrix comprises providing a pre-vascularized structure that includes a matrix material and a sacrificial material embedded in the matrix material in a predetermined pattern, where the matrix material comprises a monomer and the sacrificial material comprises a polymer. A region of the matrix material is activated to initiate an exothermic polymerization reaction and generate a self-propagating polymerization front. As the polymerization front propagates through the matrix material and polymerizes the monomer, heat from the exothermic reaction simultaneously degrades the sacrificial material into a gas-phase and/or liquid-phase byproduct. Thus, one or more voids or channels having the predetermined pattern are rapidly formed in the matrix material.Type: ApplicationFiled: March 5, 2020Publication date: September 10, 2020Inventors: Nancy R. Sottos, Mostafa Yourdkhani, Ian D. Robertson, Mayank Garg, Jeffrey S. Moore
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Patent number: 10487446Abstract: Polydicyclopentadiene (PDCPD) is a polymer of growing importance in industrial applications. Frontal ring-opening metathesis polymerization (FROMP) offers a means to rapidly cure PDCPD with minimal input energy owing to a propagating reaction wave sustained by the exothermic polymerization. The disclosure provides methods for the rapid fabrication of fiber reinforced composites that is less restrictive and more energy efficient than conventional methods.Type: GrantFiled: March 17, 2017Date of Patent: November 26, 2019Assignee: The Board of Trustees of the University of IllinoisInventors: Ian D. Robertson, Jeffrey S. Moore, Nancy R. Sottos, Scott R. White
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Patent number: 10400920Abstract: A double skinned feed or scavenge pipe assembly comprises; an inner pipe (22) and an outer pipe (23) enclosing the inner pipe and defining an annular space (24) between the inner pipe and the outer pipe and a sleeve (28) configured to slip over the outer pipe (23). Complementary threads (29) are provided on an outer wall of the outer pipe (23) and an inner wall of the sleeve (28). A lock, for example in the form of a locking nut (31) is positioned over the outer pipe (23) when the complementary threads (29) of the outer pipe and sleeve are engaged. The configuration of the assembly is such that, in use, the sleeve (28) is slidable between a first position where the inner pipe (22) is accessible and a second position wherein the inner pipe (22) is completely enclosed.Type: GrantFiled: February 13, 2017Date of Patent: September 3, 2019Assignee: ROLLS-ROYCE plcInventors: Merijn Van Den Berg, Ian D. Robertson
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Publication number: 20190242500Abstract: A double skinned feed or scavenge pipe assembly comprises; an inner pipe (22) and an outer pipe (23) enclosing the inner pipe and defining an annular space (24) between the inner pipe and the outer pipe and a sleeve (28) configured to slip over the outer pipe (23). Complementary threads (29) are provided on an outer wall of the outer pipe (23) and an inner wall of the sleeve (28). A lock, for example in the form of a locking nut (31) is positioned over the outer pipe (23) when the complementary threads (29) of the outer pipe and sleeve are engaged. The configuration of the assembly is such that, in use, the sleeve (28) is slidable between a first position where the inner pipe (22) is accessible and a second position wherein the inner pipe (22) is completely enclosed.Type: ApplicationFiled: February 13, 2017Publication date: August 8, 2019Applicant: ROLLS-ROYCE plcInventors: Merijn VAN DEN BERG, Ian D. ROBERTSON
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Publication number: 20180327531Abstract: The present disclosure provides a novel method of 3D printing using frontal polymerization chemistry. This method enables the printing of tough, high quality thermosets in a short time with the option of adding fiber reinforcement. As such, it facilitates fabrication of mechanically robust 3D-printed devices and structures.Type: ApplicationFiled: May 14, 2018Publication date: November 15, 2018Applicant: The Board of Trustees of the University of IllinoisInventors: Jeffrey S. MOORE, Scott R. White, Ian D. Robertson, Nancy R. Sottos, Jia En AW
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Publication number: 20180230642Abstract: Polydicyclopentadiene (PDCPD) is a polymer of growing importance in industrial applications. Frontal ring-opening metathesis polymerization (FROMP) offers a means to rapidly cure PDCPD with minimal input energy owing to a propagating reaction wave sustained by the exothermic polymerization. The disclosure provides methods for the rapid fabrication of fiber reinforced composites that is less restrictive and more energy efficient than conventional methods.Type: ApplicationFiled: March 17, 2017Publication date: August 16, 2018Applicant: The Board of Trustees of the University of IllinoisInventors: Ian D. ROBERTSON, Jeffrey S. MOORE, Nancy R. SOTTOS, Scott R. WHITE
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Publication number: 20170254445Abstract: A double skinned feed or scavenge pipe assembly comprises; an inner pipe (22) and an outer pipe (23) enclosing the inner pipe and defining an annular space (24) between the inner pipe and the outer pipe and a sleeve (28) configured to slip over the outer pipe (23). Complementary threads (29) are provided on an outer wall of the outer pipe (23) and an inner wall of the sleeve (28). A lock, for example in the form of a locking nut (31) is positioned over the outer pipe (23) when the complementary threads (29) of the outer pipe and sleeve are engaged. The configuration of the assembly is such that, in use, the sleeve (28) is slidable between a first position where the inner pipe (22) is accessible and a second position wherein the inner pipe (22) is completely enclosed.Type: ApplicationFiled: February 13, 2017Publication date: September 7, 2017Applicant: ROLLS-ROYCE plcInventors: Merijn VAN DEN BERG, Ian D. ROBERTSON