Patents by Inventor Christopher A. Sprague
Christopher A. Sprague 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: 20230382015Abstract: The invention relates to a method of making an article by recycling a disperse dyed fabric. The fabric is made from a melt-spun thermoplastic polyurethane fiber which contains a co-polymer diol derived from caprolactone monomer and a polyether polyol. The fabric is shredded and then thermally treated to form granules, which can be melted in an extruder to form an article.Type: ApplicationFiled: October 26, 2021Publication date: November 30, 2023Applicant: Lubrizol Advanced Materials, Inc.Inventors: Lalith B. Suragani Venu, Ravi R. Vedula, Christopher A. Sprague, Brandon Walton
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Publication number: 20230374193Abstract: The invention relates to a melt-spun thermoplastic polyurethane fiber which comprises a copolymer diol derived from caprolactone and polyether polyol and fabrics made therefrom, both of which are capable of being dyed under disperse dyeing conditions.Type: ApplicationFiled: October 26, 2021Publication date: November 23, 2023Applicant: Lubrizol Advanced Materials, Inc.Inventors: Lalith B. Suragani Venu, Ravi R. Vedula, Fred Nelson, Christopher A. Sprague, Brandon Walton
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Publication number: 20230366131Abstract: The invention relates to a melt-spun thermoplastic polyurethane fiber which comprises a copolymer diol derived from caprolactone and polyether polyol and fabrics made therefrom, both of which are capable of being dyed under disperse dyeing conditions.Type: ApplicationFiled: October 26, 2021Publication date: November 16, 2023Applicant: Lubrizol Advanced Materials, Inc.Inventors: Lalith B. Suragani Venu, Ravi R. Vedula, Christopher A. Sprague, Brandon Walton
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Patent number: 9688805Abstract: The present invention relates to elastomeric resins, fibers made from said resins, fabrics made with said fibers, and applications and uses for the resins, fibers and fabrics. The elastomer resins of the invention provide high strength fibers and well balanced fabrics with good physical properties and chemical resistance, making them attractive for use in various applications that use elastic fibers and fabrics.Type: GrantFiled: December 19, 2011Date of Patent: June 27, 2017Assignee: Lubrizol Advanced Materials, Inc.Inventors: Ravi R. Vedula, James E. Bryson, Jr., Mouh-Wahng Lee, Daniel M. Fischer, Christopher A. Sprague
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Publication number: 20170029982Abstract: Elastic fibers are disclosed which have a relatively flat modulus curve at between 100% and 200% elongation. The fibers can be made into garments having a very comfortable feel. The preferred elastic fibers are made from thermoplastic polyurethane polymers and are made by a unique melt spinning process where the fiber is wound into bobbins at a speed just slightly higher than the melt velocity of the polymer exiting the spinneret.Type: ApplicationFiled: September 2, 2016Publication date: February 2, 2017Inventors: James E. Bryson, JR., Mouh-Wahng Lee, Christopher A. Sprague, Daniel M. Fischer, Ravi R. Vedula
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Publication number: 20160053408Abstract: The present invention relates to high strength fabrics made thereof from thin gauge constant compression elastic fibers. Elastic fibers are disclosed which have a relatively flat modulus curve, for example between 100% and 200% elongation. Garments made with the constant compression elastic fibers have a more comfortable feel to the wearer. The garments are also resistant to puncture due to the high strength fabric made with the elastic fibers.Type: ApplicationFiled: August 18, 2015Publication date: February 25, 2016Inventors: Ravi R. Vedula, James E. Bryson Jr., Mouh-Wahng Lee, Christopher A. Sprague, Daniel M. Fischer
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Publication number: 20160051754Abstract: A manually actuated pump, such as a bolus delivery circuit of an insulin pump, combines a direct drive piston system with a lost motion valve system, to deliver reliably a full bolus dose, while precluding partial dosing or inadvertent overdosing conditions. The pump may also include a signaling device to indicate when a full bolus dose is delivered.Type: ApplicationFiled: November 4, 2015Publication date: February 25, 2016Inventors: Christopher Sprague Boit, Peter Gravesen, Heiko Arndt, Gregory H. Peatfield, Patrick McDermott
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Publication number: 20130273285Abstract: The present invention relates to elastomeric resins, fibers made from said resins, fabrics made with said fibers, and applications and uses for the resins, fibers and fabrics. The elastomer resins of the invention provide high strength fibers and well balanced fabrics with good physical properties and chemical resistance, making them attractive for use in various applications that use elastic fibers and fabrics.Type: ApplicationFiled: December 19, 2011Publication date: October 17, 2013Applicant: Lubrizol Advanced Materials, Inc.Inventors: Ravi R. Vedula, James E. Bryson, JR., Mouh-Wahng Lee, Daniel M. Fischer, Christopher A. Sprague
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Patent number: 8148475Abstract: Thermoplastic polyether polyurethane polymers are disclosed which are mixed with a crosslinking agent to achieve long run times in a melt spinning process to make elastic fibers. The crosslinking agent is preferably a polyether or polyester polyol reacted with a diisocyanate. A melt spinning process is also disclosed using a polyether polyurethane with a crosslinking agent. Long melt spinning run times can be achieved without experiencing excessive pressure buildup in the spinneret and fiber breakage. The thermoplastic polyether polyurethane polymers are made by reacting: (1) a blend of two or more hydroxyl terminated intermediates wherein one intermediate is a polyether intermediate and has a higher number average molecular weight than the other said polyether intermediates, and wherein the weighted average number average molecular weight of said blend is greater than 1200 Daltons; (2) at least one polyisocyanate; and (3) at least one hydroxyl terminated chain extender.Type: GrantFiled: June 29, 2004Date of Patent: April 3, 2012Assignee: Lubrizol Advanced Materials, Inc.Inventors: Ravi R. Vedula, Yona Eckstein, Yinbing Xia, James E. Bryson, Jr., Christopher A. Sprague, Julius Farkas
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Publication number: 20110305902Abstract: The present invention relates to high strength fabrics made thereof from thin gauge constant compression elastic fibers. Elastic fibers are disclosed which have a relatively flat modulus curve, for example between 100% and 200% elongation. Garments made with the constant compression elastic fibers have a more comfortable feel to the wearer. The garments are also resistant to puncture due to the high strength fabric made with the elastic fibers.Type: ApplicationFiled: June 15, 2011Publication date: December 15, 2011Applicant: LUBRIZOL ADVANCED MATERIALS, INC.Inventors: Ravi R. Vedula, James E. Bryson, JR., Mouh-Wahng Le, Daniel M. Fischer, Christopher A. Sprague
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Publication number: 20100325782Abstract: Elastic fibers are disclosed which have a relatively flat modulus curve at between 100% and 200% elongation. The fibers can be made into garments having a very comfortable feel. The preferred elastic fibers are made from thermoplastic polyurethane polymers and are made by a unique melt spinning process where the fiber is wound into bobbins at a speed just slightly higher than the melt velocity of the polymer exiting the spinneret.Type: ApplicationFiled: June 24, 2010Publication date: December 30, 2010Applicant: LUBRIZOL ADVANCED MATERIALS, INC.Inventors: Ravi R. Vedula, James E. Bryson, JR., Mouh-Wahng Lee, Daniel M. Fischer, Christopher A. Sprague
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Patent number: 7604138Abstract: A closure device (10) for a container (12) includes a filling device (14) that can be attached to an opening (16) of the container (12) A closure structure such as a membrane (18), a system (34), or a duckbill closure (54, 84) is attached to the filling device (14) in such a way that the opening (16) of the container (12) is sealed when the filling device (14) is attached to the opening (16). The closure structure is coated at least partially with polytetrafluoroethylene (22, 38, 60, 94) on one side (20, 40, 58, 90) that is accessible from outside the container (12) in the assembled state of the filling device (14) on the container (12).Type: GrantFiled: August 3, 2004Date of Patent: October 20, 2009Assignee: Koninklijke Philips Electronics N.V.Inventors: Jens-Peter Seher, Christopher Sprague Boit
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Patent number: 7509232Abstract: A system (1) for point of care diagnosis and/or analysis of a body fluid of a patient, includes at least one cartridge (2), at least one handheld diagnosis and/or analysis device (3) and at least one data processing device (4). Each cartridge (2) comprises a sample receiving room (5) for receiving a sample of the body fluid to be diagnosed and/or analyzed, a diagnosing and/or analyzing arrangement (6) for measuring at least one physiological parameter of the sample, and a first interface (7) for connecting the cartridge (2) to the handheld device (3). Each handheld device (3) comprises one second interface (8) for connecting one of said cartridges (2) to the handheld device (3), a measurement arrangement (9) co-operating with the connected cartridge (2) for measuring the parameter and generating measurement data thereof, and one third interface (13) for connecting the handheld device (3) to the data processing device (4).Type: GrantFiled: May 5, 2003Date of Patent: March 24, 2009Assignee: Koninklijke Philips Electronics N.V.Inventors: Jens-Peter Seher, Gerhard Pross, Christopher Sprague Boit
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Publication number: 20040266301Abstract: Thermoplastic polyether polyurethane polymers are disclosed which are mixed with a crosslinking agent to achieve long run times in a melt spinning process to make elastic fibers. The crosslinking agent is preferably a polyether or polyester polyol reacted with a diisocyanate. A melt spinning process is also disclosed using a polyether polyurethane with a crosslinking agent. Long melt spinning run times can be achieved without experiencing excessive pressure buildup in the spinneret and fiber breakage. The thermoplastic polyether polyurethane polymers are made by reacting: (1) a blend of two or more hydroxyl terminated intermediates wherein one intermediate is a polyether intermediate and has a higher number average molecular weight than the other said polyether intermediates, and wherein the weighted average number average molecular weight of said blend is greater than 1200 Daltons; (2) at least one polyisocyanate; and (3) at least one hydroxyl terminated chain extender.Type: ApplicationFiled: June 29, 2004Publication date: December 30, 2004Inventors: Ravi R. Vedula, Yona Eckstein, Yinbing Xia, James E. Bryson, Christopher A. Sprague, Julius Farkas
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Patent number: D326066Type: GrantFiled: February 7, 1990Date of Patent: May 12, 1992Inventor: Christopher Sprague