Patents by Inventor Bobby A. Howell

Bobby A. Howell 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: 12030986
    Abstract: The present invention provides a sustained release composition having hyperbranched polymers that are polyesters that are biobased and biodegradable, and that have at least one active ingredient, which composition delivers the active ingredient over time. These active ingredients can be a wide variety of compounds so long as they can covalently bind to the polymer or be encapsulated in the polymer in a manner that is released at the point of delivery, usually by acid hydrolysis or enzymatic bond scission.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: July 9, 2024
    Assignee: CENTRAL MICHIGAN UNIVERSITY
    Inventors: Patrick B. Smith, Bobby A. Howell, Cuiwei Zhang
  • Publication number: 20200262974
    Abstract: The present invention provides a sustained release composition having hyperbranched polymers that are polyesters that are biobased and biodegradable, and that have at least one active ingredient, which composition delivers the active ingredient over time. These active ingredients can be a wide variety of compounds so long as they can covalently bind to the polymer or be encapsulated in the polymer in a manner that is released at the point of delivery, usually by acid hydrolysis or enzymatic bond scission.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 20, 2020
    Inventors: Patrick B. Smith, Bobby A. Howell, Cuiwei Zhang
  • Publication number: 20170073465
    Abstract: The present invention provides a sustained release composition having hyperbranched polymers that are polyesters that are biobased and biodegradable, and that have at least one active ingredient, which composition delivers the active ingredient over time. These active ingredients can be a wide variety of compounds so long as they can covalently bind to the polymer or be encapsulated in the polymer in a manner that is released at the point of delivery, usually by acid hydrolysis or enzymatic bond scission.
    Type: Application
    Filed: February 23, 2015
    Publication date: March 16, 2017
    Inventors: Patrick B. Smith, Bobby A. Howell, Cuiwei Zhang
  • Patent number: 5045259
    Abstract: The present invention is a process for forming an extruded article containing a copolymer of vinylidene chloride and at least one other ethylenically-unsaturated comonomer, said process comprising the step of extruding the copolymer in the presence of (1) at least one gas which is inert with respect to the copolymer and does not plasticize the copolymer; and (2) essentially no gases which are not inert with respect to the copolymer. Vinylidene chloride copolymers extruded according to the process of the present invention have lower metal adhesion and less tendency to contain specks of carbon than do vinylidene chloride copolymer copolymers extruded under an air atmosphere.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: September 3, 1991
    Assignee: The Dow Chemical Company
    Inventors: Jack A. Berdasco, Stephen R. Betso, Kun S. Hyun, Bobby A. Howell, Bernard C. Obi-Ahuba
  • Patent number: 4551502
    Abstract: Novel complexes are prepared from water-soluble compounds having at least one amidocarbonylic unit and a square planar organometallic compound.
    Type: Grant
    Filed: September 19, 1983
    Date of Patent: November 5, 1985
    Inventors: Bobby A. Howell, Erik W. Walles
  • Patent number: 4405757
    Abstract: Unique, valuable and multifariously utile macromolecular complexes are comprised of: (i) non-ionic, amidocarbonylic, water-soluble polymers (and, for some embodimental purposes, the monomeric precursor(s) thereof), including such known materials as (poly)N-vinylpyrrolidone (i.e., "PVP") and/or (poly)N-vinyl-5-methyl-2-oxazolidinone (i.e., "PVO-M") and the hereinafter disclosed like(s) and/or equivalent(s) thereof which, for convenience, may be herein generically identified as "WSP"; and (ii) square planar configured platinous and, for instant applicancy, equivalently metalled organometallic compounds characterized in containing in ligandal inclusion an aromatic moiety from which depends and to which is connected at least a single distinctly polar substituent group (or "handle", as it were), such as an hydroxide (i.e., "--OH"), carboxylic acid (i.e., "--COOH") or sulfonic acid - (i.e., "--SO.sub.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: September 20, 1983
    Inventors: Bobby A. Howell, Erik W. Walles