Patents by Inventor Ellen R Campbell

Ellen R Campbell 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: 20200359660
    Abstract: Systems and methods for packing solutions for oxygen-sensitive articles such as food, beverages, and pharmaceuticals, as well as biological samples and/or cultures are disclosed. In preferred systems and methods, oxygen is removed using a bi-enzymatic reaction sequence that recycles and depletes oxygen to extinction, preferably using an oxidase and a catalase as catalysts and a carbohydrate as co-substrate while at least one the enzymes is in a hydrogel or other polymeric formulation.
    Type: Application
    Filed: January 31, 2019
    Publication date: November 19, 2020
    Inventors: Wilbur H. Campbell, Ellen R. Campbell
  • Patent number: 9187779
    Abstract: Systems and methods for oxygen removal from aqueous solutions are presented in which a bi-enzymatic reaction sequence recycles and depletes oxygen to extinction, preferably using an oxidase and a catalase as biocatalysts and a carbohydrate as co-substrate. Contemplated systems and methods are particularly advantageous in conjunction with electrochemical reaction systems in which oxygen would adversely interfere with the reaction system.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: November 17, 2015
    Assignee: The Nitrate Elimination Co., Inc.
    Inventors: Nicolas Plumere, Wilbur H. Campbell, Ellen R. Campbell
  • Publication number: 20120211372
    Abstract: Systems and methods for oxygen removal from aqueous solutions are presented in which a bi-enzymatic reaction sequence recycles and depletes oxygen to extinction, preferably using an oxidase and a catalase as biocatalysts and a carbohydrate as co-substrate. Contemplated systems and methods are particularly advantageous in conjunction with electrochemical reaction systems in which oxygen would adversely interfere with the reaction system.
    Type: Application
    Filed: February 21, 2012
    Publication date: August 23, 2012
    Applicant: THE NITRATE ELIMINATION CO., INC.
    Inventors: Nicolas Plumere, Wilbur H. Campbell, Ellen R. Campbell
  • Patent number: 7262038
    Abstract: The invention provides modification to the polynucleotide coding sequence for Pichia angusta NAD (P)H: nitrate reductase [YNaR1; GenBank accession number Z49110], which has Enzyme Commission number 1.7.1.2 (formerly EC 1.6.6.2), yielding the polynucleotide coding sequence for simplified eukaryotic nitrate reductase (S-NaR1). The invention also provides a method for recombinant expression of said polynucleotide code in the cells of the methylotrophic yeast Pichia pastoris to produce the polypeptide for S-NaR1, which binds the host-produced molybdenum-molybdopterin cofactor and intracellularly forms catalytically active, nitrate-reducing enzyme as small and stable multimeric proteins. The invention also provides a method for rapid and high-yielding purification of S-NaR1 by utilizing the hexa-histidine sequence at the carboxyl-terminus of said polypeptide for immobilized metal affinity chromatography.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: August 28, 2007
    Assignee: Nitrate Elimination Co., Inc.
    Inventors: Wilbur H Campbell, Guillaume G Barbier, Ellen R Campbell