Patents by Inventor Daniel M. Wells

Daniel M. Wells 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: 20230271853
    Abstract: The present invention is directed to a ligated metal-organic framework (MOF) for use in removing both anionic and cationic species from a liquid or liquid stream. The present invention also provides methods for placing the MOF on a substrate to form a MOF-containing product that can be used in the removal of certain species from a given fluid. The MOF may be a Zr-based MOF, such as NU-1000, for removal of certain anions, such as oxy-anions, or having an attached thiosulfonyl-thiol (—SO2—S—R2—SH, where R2 is an alkyl group) ligand for complexation with certain cationic species in addition to the anions. The substrate may be any substrate to which a given MOF may be attached, including inert polypropylene polymer resin beads, a macroscopic fabric such as a mesh material or mesh filter, and a molecular fabric.
    Type: Application
    Filed: May 9, 2023
    Publication date: August 31, 2023
    Inventors: Paul L. Frattini, Daniel M. Wells, Ashlee J. Howarth, Christopher James Copeman, Keith Paul Fruzzetti
  • Patent number: 11136660
    Abstract: The present invention provides a method for manufacturing a finished metal object or product having a corrosion resistant layer integral to or within a top portion of at least one of its surfaces that would be exposed to a corrosive environment. In one embodiment, the method for manufacturing is directed to a finished metal tubing product having a corrosion resistant layer within its inside surface that is exposed to a fluid and wherein the corrosion resistant layer is a zinc-metal oxide layer, such as a zinc-chromium oxide layer, or a zinc-mixed metal oxide layer. In addition to methods of manufacturing, the present invention provides finished metal objects or products having a corrosion resistant layer integral to or within a top portion of at least one surfaces that would be exposed to a corrosive environment.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: October 5, 2021
    Assignee: Electric Power Research Institute, Inc.
    Inventors: John Morrison Riddle, Carola Annemarie Gregorich, Daniel M. Wells
  • Patent number: 10723635
    Abstract: The present invention provides for the use of a metal-organic framework (MOF) in removing particular chemical species or compounds, in particular oxy-anions, from a liquid or liquid stream. In some embodiments, the MOF is a Zr-based MOF, such as NU-1000, and the oxy-anions that are removed include, include, for example, oxy-anions of selenium, including selenite (SeO32?) and selenate (SeO42?); oxy-anions of antimony, including oxy-anions in either the Sb[III] (antimonite) or the Sb[V] (antimonate) redox state; and oxy-anions of lead, including oxy-anions in either the Pb[II] or the Pb[IV] redox state, such as Pb(OH)62?, Pb(OH)64?, PbO32?, and PbO22?. The Zr-based MOF, including NU-1000 can be used to remove these oxy-anions from various liquid streams in industrial processes such as a nuclear and fossil fuel power plants, including the latter's flue gas desulfurization system.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: July 28, 2020
    Assignee: Northwestern University
    Inventors: Daniel M. Wells, Paul L. Frattini, Keith Paul Fruzzetti, Omar Farha, Joseph T. Hupp, Ashlee J. Howarth, Michael J. Katz
  • Publication number: 20180134581
    Abstract: The present invention provides for the use of a metal-organic framework (MOF) in removing particular chemical species or compounds, in particular oxy-anions, from a liquid or liquid stream. In some embodiments, the MOF is a Zr-based MOF, such as NU-1000, and the oxy-anions that are removed include, include, for example, oxy-anions of selenium, including selenite (SeO32?) and selenate (SeO42?); oxy-anions of antimony, including oxy-anions in either the Sb[III] (antimonite) or the Sb[V] (antimonate) redox state; and oxy-anions of lead, including oxy-anions in either the Pb[II] or the Pb[IV] redox state, such as Pb(OH)62?, Pb(OH)64?, PbO32?, and PbO22?. The Zr-based MOF, including NU-1000 can be used to remove these oxy-anions from various liquid streams in industrial processes such as a nuclear and fossil fuel power plants, including the latter's flue gas desulfurization system.
    Type: Application
    Filed: October 18, 2017
    Publication date: May 17, 2018
    Applicant: Northwestern University
    Inventors: Daniel M. Wells, Paul L. Frattini, Keith Paul Fruzzetti, Omar Farha, Joseph T. Hupp, Ashlee J. Howarth, Michael J. Katz
  • Publication number: 20170121809
    Abstract: The present invention provides a method for manufacturing a finished metal object or product having a corrosion resistant layer integral to or within a top portion of at least one of its surfaces that would be exposed to a corrosive environment. In one embodiment, the method for manufacturing is directed to a finished metal tubing product having a corrosion resistant layer within its inside surface that is exposed to a fluid and wherein the corrosion resistant layer is a zinc-metal oxide layer, such as a zinc-chromium oxide layer, or a zinc-mixed metal oxide layer. In addition to methods of manufacturing, the present invention provides finished metal objects or products having a corrosion resistant layer integral to or within a top portion of at least one surfaces that would be exposed to a corrosive environment.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 4, 2017
    Inventors: John Morrison Riddle, Carola Annemarie Gregorich, Daniel M. Wells
  • Publication number: 20150141537
    Abstract: A sequestration resin for nuclear reactor coolant cleanup and for aqueous liquid radioactive waste cleanup that can irreversibly remove cobalt ion during reactor operation or during radioactive waste processing so as to deplete the coolant or liquid of a significant fraction of dose-causing radiocobalt is disclosed. The sequestration resin is configured to remove cobalt derived radioactivity in aqueous solutions and includes a sulfonic acid based polymer resin covalently coupled to an amine based ligand by a sulfonamide linkage. Alternatively, the sequestration resin includes a sulfonic acid based polymer resin ionically coupled to an amine based ligand that is altered at one terminus to contain a positively charged quaternary ammonium group.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventors: Leon Yengoyan, Paul L. Frattini, Daniel M. Wells
  • Patent number: 6063424
    Abstract: The oil content of bran can be stabilized by the addition of a stabilizing agent to grain prior to, during or after milling of the grain, particularly rice. The treatment improves the yield of edible oil attainable when the oil is extracted from the milled bran.
    Type: Grant
    Filed: August 29, 1998
    Date of Patent: May 16, 2000
    Assignee: LipoGenics, Inc.
    Inventors: Daniel M. Wells, James A. Belcher
  • Patent number: 5390543
    Abstract: A force-generating actuator connected at or across points of a structure capable of relative motion at an exciting frequency is operated to input a predetermined load into the structure and the response of the structure is measured for analysis. In one form of the invention the actuator is one of a plurality of actuators of an active vibration control system which is isolated and operated independently in a shake test mode. Advantageously, especially in a helicopter application, the remaining actuators can continue to be operated to reduce background vibration.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: February 21, 1995
    Assignee: Westland Helicopters Limited
    Inventors: Alan E. Staple, Daniel M. Wells, Andrew L. Jordan
  • Patent number: 3941042
    Abstract: An automatic coffee brewing system for brewing coffee in a chamber and dispensing the brewed coffee into a container. The chamber is automatically flushed upon completion of the brewing cycle. A predetermined amount of coffee grinds is automatically inserted into the coffee brewing chamber through an open lid. The brewing chamber is then rotated until the lid is closed. Hot brewing water is then inserted into the chamber, while the lid is automatically locked to prevent leakage of the brewed coffee. The brewed coffee then is removed from the chamber. The chamber is then rotated to enable the coffee grounds to be flushed from the chamber. The chamber is then rotated into position for brewing another container of coffee. A conical-shaped filter in the chamber enables brewed coffee to pass through to an outlet and simultaneously, retains the grounds in the chamber. During the flush cycle, water is forced into the chamber and the coffee grounds are cleared from the filter.
    Type: Grant
    Filed: March 1, 1974
    Date of Patent: March 2, 1976
    Assignee: Farmer Bros. Co.
    Inventors: Daniel M. Wells, James H. Tarrant