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).

  • Publication number: 20230382015
    Abstract: 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: Application
    Filed: October 26, 2021
    Publication date: November 30, 2023
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Lalith B. Suragani Venu, Ravi R. Vedula, Christopher A. Sprague, Brandon Walton
  • Publication number: 20230374193
    Abstract: 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: Application
    Filed: October 26, 2021
    Publication date: November 23, 2023
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Lalith B. Suragani Venu, Ravi R. Vedula, Fred Nelson, Christopher A. Sprague, Brandon Walton
  • Publication number: 20230366131
    Abstract: 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: Application
    Filed: October 26, 2021
    Publication date: November 16, 2023
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Lalith B. Suragani Venu, Ravi R. Vedula, Christopher A. Sprague, Brandon Walton
  • Patent number: 9688805
    Abstract: 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: Grant
    Filed: December 19, 2011
    Date of Patent: June 27, 2017
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Ravi R. Vedula, James E. Bryson, Jr., Mouh-Wahng Lee, Daniel M. Fischer, Christopher A. Sprague
  • Publication number: 20170029982
    Abstract: 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: Application
    Filed: September 2, 2016
    Publication date: February 2, 2017
    Inventors: James E. Bryson, JR., Mouh-Wahng Lee, Christopher A. Sprague, Daniel M. Fischer, Ravi R. Vedula
  • Publication number: 20160053408
    Abstract: 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: Application
    Filed: August 18, 2015
    Publication date: February 25, 2016
    Inventors: Ravi R. Vedula, James E. Bryson Jr., Mouh-Wahng Lee, Christopher A. Sprague, Daniel M. Fischer
  • Publication number: 20160051754
    Abstract: 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: Application
    Filed: November 4, 2015
    Publication date: February 25, 2016
    Inventors: Christopher Sprague Boit, Peter Gravesen, Heiko Arndt, Gregory H. Peatfield, Patrick McDermott
  • Publication number: 20130273285
    Abstract: 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: Application
    Filed: December 19, 2011
    Publication date: October 17, 2013
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Ravi R. Vedula, James E. Bryson, JR., Mouh-Wahng Lee, Daniel M. Fischer, Christopher A. Sprague
  • Patent number: 8148475
    Abstract: 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: Grant
    Filed: June 29, 2004
    Date of Patent: April 3, 2012
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Ravi R. Vedula, Yona Eckstein, Yinbing Xia, James E. Bryson, Jr., Christopher A. Sprague, Julius Farkas
  • Publication number: 20110305902
    Abstract: 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: Application
    Filed: June 15, 2011
    Publication date: December 15, 2011
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Ravi R. Vedula, James E. Bryson, JR., Mouh-Wahng Le, Daniel M. Fischer, Christopher A. Sprague
  • Publication number: 20100325782
    Abstract: 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: Application
    Filed: June 24, 2010
    Publication date: December 30, 2010
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Ravi R. Vedula, James E. Bryson, JR., Mouh-Wahng Lee, Daniel M. Fischer, Christopher A. Sprague
  • Patent number: 7604138
    Abstract: 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: Grant
    Filed: August 3, 2004
    Date of Patent: October 20, 2009
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Jens-Peter Seher, Christopher Sprague Boit
  • Patent number: 7509232
    Abstract: 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: Grant
    Filed: May 5, 2003
    Date of Patent: March 24, 2009
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Jens-Peter Seher, Gerhard Pross, Christopher Sprague Boit
  • Publication number: 20040266301
    Abstract: 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: Application
    Filed: June 29, 2004
    Publication date: December 30, 2004
    Inventors: Ravi R. Vedula, Yona Eckstein, Yinbing Xia, James E. Bryson, Christopher A. Sprague, Julius Farkas
  • Patent number: D326066
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: May 12, 1992
    Inventor: Christopher Sprague