Patents by Inventor John C. Harrington

John C. Harrington 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).

  • Patent number: 11931623
    Abstract: An apparatus enabling a user to perform a simulated bicycling exercise includes a frame, two mounting points defining an axis, the two mounting points comprising an upper rear mounting point comprising an upper rear rotating joint and a lower front mounting point comprising a pivoting connection arrangement proximate to and interacting with the frame, the pivoting connection arrangement comprising at least one resistive element configured to provide resistive force returning the frame to a neutral centered orientation from an off-centered orientation and pedals associated with a wheel and the frame, the pedals enabling the user, when facing forward, to apply force to the pedals and rotate the wheel. The frame is configured to receive forces from the user and dissipate the forces into frame leaning forces such that the user has an ability to cause the frame to pivot about the two mounting points by leaning to one side.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: March 19, 2024
    Assignee: Real Ryder, LLC
    Inventors: Colin Irving, John J. Harrington, Brian C. Stewart, Michael S. Lofgren
  • Patent number: 10876254
    Abstract: A method of increasing chemical efficiency of chemical additives in a papermaking system includes the steps of providing thick stock pulp comprising soluble lignin, process water, and at least about 2% by weight of cellulosic fiber based on total weight of thick stock pulp, and adding at least one laccase enzyme and at least one organic polymer to the thick stock pulp to reduce the amount of soluble lignin therein. The organic polymer is chosen from cationic polymers, non-ionic polymers and combinations thereof.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: December 29, 2020
    Assignee: SOLENIS TECHNOLOGIES, L.P.
    Inventors: John C. Harrington, Mingxiang Luo, Davit E. Sharoyan, Sujan Singh
  • Publication number: 20190100875
    Abstract: A method of increasing chemical efficiency of chemical additives in a papermaking system includes the steps of providing thick stock pulp comprising soluble lignin, process water, and at least about 2% by weight of cellulosic fiber based on total weight of thick stock pulp, and adding at least one laccase enzyme and at least one organic polymer to the thick stock pulp to reduce the amount of soluble lignin therein. The organic polymer is chosen from cationic polymers, non-ionic polymers and combinations thereof.
    Type: Application
    Filed: October 2, 2018
    Publication date: April 4, 2019
    Applicant: SOLENIS TECHNOLOGIES, L.P.
    Inventors: John C. Harrington, Mingxiang Luo, Davit E. Sharoyan, Sujan Singh
  • Publication number: 20180051417
    Abstract: A method of making paper comprising adding to an aqueous suspension of cellulosic pulp slurry a polymer in the form of an inverse emulsion comprising a cationic poly N,N-(dialkylaminoalkyl) (meth)acrylamide or it's quaternates or salts, and dewatering the cellulose pulp slurry to form a paper or paperboard product, wherein the pulp slurry contains more than about 75 weight ppm of water soluble lignin based upon total pulp slurry weight, and wherein the polymer is added to the pulp slurry at a dosage of 0.001 to 1% by weight based upon cellulose pulp solids, and wherein the polymer optionally contains multi-functional monomer.
    Type: Application
    Filed: August 15, 2017
    Publication date: February 22, 2018
    Inventors: John C. Harrington, Bryan K. Spraul, Jason E. Anderson
  • Patent number: 9873982
    Abstract: A method of increasing the drainage performance of a pulp slurry during the manufacture of paper products by adding (a) at least one microfibrillated cellulose and (b) at least one associative polymer or at least one branched or crosslinked copolymer to the pulp slurry. This addition occurs before the dewatering step where the pulp slurry is formed into a fibrous mat.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: January 23, 2018
    Assignee: Solenis Technologies, L.P.
    Inventors: John C. Harrington, Kate Marritt Lusvardi, Fushan Zhang
  • Publication number: 20170101740
    Abstract: A method of increasing the drainage performance of a pulp slurry during the manufacture of paper products by adding (a) at least one microfibrillated cellulose and (b) at least one associative polymer or at least one branched or crosslinked copolymer to the pulp slurry. This addition occurs before the dewatering step where the pulp slurry is formed into a fibrous mat.
    Type: Application
    Filed: October 12, 2015
    Publication date: April 13, 2017
    Applicants: Solenis Technologies, L.P., UPM-Kymmene Corporation
    Inventors: John C. HARRINGTON, Kate Marritt LUSVARDI, Fushan ZHANG
  • Publication number: 20150041090
    Abstract: A method of treating a cellulosic slurry to improve drainage is disclosed the method comprises adding a PEO to a cellulosic furnish in an amount of from 0.1 to 10 lbs per ton and adding a synthetic polymer to the furnish in an amount of from 0.1 to 10 lbs per ton, allowing the furnish to drain and forming a paper product.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Inventors: John C. Harrington, Lance P. Perticone, Kane D. Sheldon, Bryan K. Spraul, Richard M. Verbrugge
  • Patent number: 8932433
    Abstract: A method of improving retention and drainage in a papermaking process is disclosed. The addition of an associative polymer, a poly(vinylamine) and optionally a siliceous material to the papermaking slurry to improve retention and drainage is disclosed. Additionally a method to improve retention and drainage comprising addition of an organic microparticle, a poly(vinylamine) and optionally a siliceous material to the papermaking slurry is disclosed. A composition comprising an associative polymer, and a poly(vinylamine) and optionally further comprising cellulose fiber is disclosed.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: January 13, 2015
    Assignee: Solenis Technologies, L.P.
    Inventors: Frank J. Sutman, John C. Harrington, Robert A Gelman
  • Publication number: 20120291971
    Abstract: A method of improving retention and drainage in a papermaking process is disclosed. The addition of an associative polymer, a poly(vinylamine) and optionally a siliceous material to the papermaking slurry to improve retention and drainage is disclosed. Additionally a method to improve retention and drainage comprising addition of an organic microparticle, a poly(vinylamine) and optionally a siliceous material to the papermaking slurry is disclosed. A composition comprising an associative polymer, and a poly(vinylamine) and optionally further comprising cellulose fiber is disclosed.
    Type: Application
    Filed: July 17, 2012
    Publication date: November 22, 2012
    Applicant: HERCULES INCORPORATED
    Inventors: Frank J. Sutman, John C. Harrington, Robert A. Gelman
  • Patent number: 7615135
    Abstract: The present invention describes polymeric retention and drainage aids for cellulosic fiber compositions and methods of use of the same.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: November 10, 2009
    Assignee: Hercules Incorporated
    Inventors: John C. Harrington, Martha G. Hollomon
  • Publication number: 20090188640
    Abstract: A method of modifying starch with metal silicates, and the use of the modified starch in the preparation of cellulosic fiber compositions. The method further relates to cellulosic fiber compositions, such as paper and paperboard, which incorporate the starch modified with metal silicates.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 30, 2009
    Inventor: John C. Harrington
  • Patent number: 7507781
    Abstract: A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k?) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G?) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: March 24, 2009
    Assignee: Hercules Incorporated
    Inventors: Brian Walchuk, Fushan Zhang, John C. Harrington, William Sean Carey, Richard Lee Brady
  • Patent number: 7429625
    Abstract: A method to invert an inverse emulsion water compatible polymer product using a combination of surfactants that have specific chemical structures is disclosed. A combination, or blend, of two or more surfactants provides for an effective breaker system. The blend of surfactants is more effective than the individual surfactants.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: September 30, 2008
    Assignee: Hercules Incorporated
    Inventors: John C. Harrington, Robert A. Gelman, K. Abraham Vaynberg
  • Patent number: 7250448
    Abstract: A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k?) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G?) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: July 31, 2007
    Assignee: Hercules Incorporated
    Inventors: Brian Walchuk, Fushan Zhang, John C. Harrington, William Sean Carey, Richard Lee Brady
  • Publication number: 20040102528
    Abstract: A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G′) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.
    Type: Application
    Filed: December 6, 2002
    Publication date: May 27, 2004
    Inventors: Brian Walchuk, Fushan Zhang, John C. Harrington, William Sean Carey, Richard Lee Brady
  • Publication number: 20020053413
    Abstract: A papermaking method and a composition which utilize, as a drainage aid, a water soluble hydrophobically associative polymer which is a copolymer prepared from monomers which include a hydrophobic ethylenically unsaturated monomer, and one or more of a nonionic ethylenically unsaturated monomer, a cationic ethylenically unsaturated monomer, and an anionic ethylenically unsaturated monomer.
    Type: Application
    Filed: December 6, 2000
    Publication date: May 9, 2002
    Inventors: Huashi T. Zhang, John C. Harrington
  • Patent number: 5626718
    Abstract: The present invention is directed to a method for increasing the retention on a washing/thickening device in an aqueous papermaking system. The method generally comprises adding to the furnish solids of the system an effective amount of a cationic polyacrylamide polymer.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: May 6, 1997
    Assignee: Betz Laboratories, Inc.
    Inventors: Irenee J. Philippe, Frank J. Sutman, Thomas E. Taggart, Mary B. K. Letscher, Michael A. Schuster, John C. Harrington, IV
  • Patent number: 5532308
    Abstract: A composition and method for improving the drainage and retention characteristics of a paper furnish consisting of a water soluble graft copolymer and bentonite clay. It is preferred that the graft copolymer be added to the furnish prior to at least one shear stage and that the bentonite clay be added after the shear stage.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: July 2, 1996
    Assignee: Betz PaperChem, Inc.
    Inventors: Michael A. Schuster, John C. Harrington, IV, Wen P. Liao, Fu Chen
  • Patent number: 5482595
    Abstract: A method of improving the drainage characteristics of a pulp slurry in a papermaking operation utilizing the sequential steps of adding alum, ionic polyacrylamide and cationic starch. The cationic starch can be added to the slurry prior to or after the primary screen.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: January 9, 1996
    Assignee: Betz PaperChem, Inc.
    Inventors: John C. Harrington, IV, Michael A. Schuster
  • Patent number: 5415740
    Abstract: A composition and method for improving the drainage and retention characteristics of a paper furnish consisting of a water soluble graft copolymer and bentonite clay. It is preferred that the graft copolymer be added to the furnish prior to at least one shear stage and that the bentonite clay be added after the shear stage.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz PaperChem, Inc.
    Inventors: Michael A. Schuster, John C. Harrington, IV, Wen P. Liao, Fu Chen