Patents by Inventor Timothy D. O'Brien

Timothy D. O'Brien 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: 20210301251
    Abstract: This disclosure describes methods for organoid generation including, for example, for generation of a multi-tissue organoid. The multi-tissue organoid may include cartilage, bone, epithelium, and/or fibrous connective tissue. This disclosure further describes methods for isolating cells from the organoids and methods of using the organoids and cells of the organoids.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 30, 2021
    Inventors: Timothy D. O'Brien, Beth Lindborg, Amanda Vegoe
  • Publication number: 20210108172
    Abstract: Fully dissolved, aqueous solutions of polycationic macromolecules and polyanionic macromolecules with a cell suspension are mixed to form a three dimensional hydrogel, useful for clinical, diagnostic, and therapeutic applications.
    Type: Application
    Filed: October 14, 2020
    Publication date: April 15, 2021
    Inventors: Timothy D. O'Brien, John H. Brekke, Aubie Shaw
  • Publication number: 20200248139
    Abstract: This disclosure describes methods for organoid generation including, for example, for generation of a mid-brain organoid including an A9 neuron. Specifically, the methods comprising: introducing an input cell into a cell culture medium comprising hyaluronic acid, wherein the input cell comprises an embryonic stem cell, an induced pluripotent stem cell, or a neural progenitor cell; transferring the input cell to a cell culture device; and culturing the cell in the cell culture device for at least 7 days. This disclosure further describes methods for using the organoids.
    Type: Application
    Filed: August 8, 2018
    Publication date: August 6, 2020
    Inventors: Timothy D. O'Brien, Beth A. Lindborg, Amanda Vegoe, Jakub Tolar
  • Patent number: 7935225
    Abstract: Papermaker's forming fabrics including extruded thermoplastic monofilaments formed from a polymer blend consisting of from about 51%-90% pbw (parts by weight) of a poly(ethylene naphthalate) (PEN) polymer having a melt point of from 249° C. to about 278° C., most preferably between about 262° C. and 273° C., and an intrinsic viscosity of from 0.45 to about 0.95, preferably from about 0.65 to about 0.85, along with from about 49%-10% pbw of a poly(ethylene terephthalate) (PET) polymer having an intrinsic viscosity of between about 0.55 to about 1.05, preferably from about 0.85 to 1.0. Monofilaments formed from the novel polymer blend exhibit physical properties differing from those obtained from monofilaments formed of 100% PEN polymer, making them particularly suitable for use in weaving and processing the forming fabrics of the present invention.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: May 3, 2011
    Assignee: AstenJohnson, Inc.
    Inventors: Timothy D. O'Brien, Bryce Jones
  • Publication number: 20110005700
    Abstract: Papermaker's forming fabrics including extruded thermoplastic monofilaments formed from a polymer blend consisting of from about 51%-90% pbw (parts by weight) of a poly(ethylene naphthalate) (PEN) polymer having a melt point of from 249° C. to about 278° C., most preferably between about 262° C. and 273° C., and an intrinsic viscosity of from 0.45 to about 0.95, preferably from about 0.65 to about 0.85, along with from about 49%-10% pbw of a poly(ethylene terephthalate) (PET) polymer having an intrinsic viscosity of between about 0.55 to about 1.05, preferably from about 0.85 to 1.0. Monofilaments formed from the novel polymer blend exhibit physical properties differing from those obtained from monofilaments formed of 100% PEN polymer, making them particularly suitable for use in weaving and processing the forming fabrics of the present invention.
    Type: Application
    Filed: February 23, 2009
    Publication date: January 13, 2011
    Applicant: AstenJohnson, Inc.
    Inventors: Timothy D. O'Brien, Bryce Jones
  • Patent number: 6287687
    Abstract: Methods and apparatus for plasma modifying a substrate are disclosed along with associated techniques for applying coatings to the substrate. Particular utility has been found using a hollow cathode to generate the plasma along with magnetic focusing means to focus the plasma at the surface of a substrate.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: September 11, 2001
    Assignee: Asten, Inc.
    Inventors: Angelo Yializis, Richard E. Ellwanger, Michael G. Mikhael, Wolfgang Decker, C. Barry Johnson, Gale Shipley, Timothy D. O'Brien
  • Patent number: 6146462
    Abstract: Methods and apparatus for plasma modifying a substrate are disclosed along with associated techniques for applying coatings to the substrate. Particular utility has been found using a hollow cathode to generate the plasma along with magnetic focusing means to focus the plasma at the surface of a substrate.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: November 14, 2000
    Assignee: AstenJohnson, Inc.
    Inventors: Angelo Yializis, Richard E. Ellwanger, Michael G. Mikhael, Wolfgang Decker, C. Barry Johnson, Gale Shipley, Timothy D. O'Brien
  • Patent number: 5933908
    Abstract: Level (i.e., uniform diameter along the length thereof) and tapered (varying diameter along the length thereof) brush bristles include a central core having an outer wall and a pair of internal, semi-cylindrical passages separated by a central dividing wall. A plurality of spokes, or ribs, extend radially outwardly from the outer wall of the central core in planes other than the plane of the central dividing wall and also are spaced equidistant from each other about the circumference of the outer wall. Applicator brushes employing the aforementioned bristles also form a part of this invention.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: August 10, 1999
    Assignee: Specialty Filaments, Inc.
    Inventor: Timothy D. O'Brien
  • Patent number: 5701629
    Abstract: A polymer bristle (100) for a liquid-applying brush such as a paint brush includes in cross section a central bore (95), an annulus (96) and preferably three radiating spokes (97) with parallel sides and rounded tips. The bristle is tapered from a thick end (101) that is bundled into the ferrule of a brush toward a thin end (103). The bristle may be flagged by slits (130).
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: December 30, 1997
    Assignee: Speciality Filaments, Inc.
    Inventor: Timothy D. O'Brien
  • Patent number: 5360669
    Abstract: Microcellular carbon filaments having a specific gravity about 20-30% less than conventional carbon fibers made of the same precursor resin are formed by foaming the precursor resin during spinning. These low density microcellular carbon filaments, which may also be hollow, have improved insulation properties compared with conventional carbon fibers, they have a higher than expected strength to weight ratio and adhere in a superior fashion to a variety of matrix materials.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: November 1, 1994
    Assignee: Ketema, Inc.
    Inventors: Robert L. Noland, Timothy D. O'Brien
  • Patent number: 5338605
    Abstract: Hollow carbon and graphite filaments having a specific gravity of about 20-50% less than conventional solid carbon fibers made of the same precursor resin are formed by spinning hollow precursor resin filaments. These low density hollow carbon filaments have improved insulating properties compared with conventional solid carbon fibers and have an excellent bending strength to weight ratio.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: August 16, 1994
    Assignee: Ketema, Inc.
    Inventors: Robert L. Noland, Timothy D. O'Brien
  • Patent number: 5032456
    Abstract: Synthetic microcellular paintbrush bristles are produced having a generally consistent cross-sectional shape along their length and a rough and irregular surface. The bristles comprise 15 to 40% cells on a volume basis, the cells being predominantly closed in the interior of the bristle and being open along the wall to provide the rough and irregular surface.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: July 16, 1991
    Assignee: Newell Operating Company
    Inventors: Timothy D. O'Brien, William M. Wagner