Patents by Inventor Robert I. Christensen, Jr.

Robert I. Christensen, Jr. 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: 8784662
    Abstract: Filtration processes and systems are provided for the separation of a filterable fluid stream by a filtration membrane module with uniform transmembrane pressure and flux along the membrane and internal control of membrane fouling via intermittent periodic reduction of the pressure differential between the permeate and retentate sides of the membrane and/or backwashing cycles during separation, recovery, and/or purification of proteins, peptides, nucleic acids, biologically produced polymers and other compounds or materials from aqueous fluids.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: July 22, 2014
    Assignee: Danisco US Inc.
    Inventors: Nathaniel T. Becker, Ryszard Braun, Robert I. Christensen, Jr., Stefan Ekbom, Robin Fong, Alexandra Schuler
  • Publication number: 20140141971
    Abstract: A granule having high stability and low dust is described. The granule includes a hydrated barrier material having moderate or high water activity. Also described are methods of producing the granules.
    Type: Application
    Filed: December 16, 2013
    Publication date: May 22, 2014
    Applicant: DANISCO US INC.
    Inventors: Nathaniel T. BECKER, Robert I. CHRISTENSEN, JR., Alfred L. GAERTNER, Mahmood M. GHANI, Douglas A. DALE
  • Publication number: 20120214727
    Abstract: A granule having high stability and low dust is described. The granule includes a hydrated barrier material having moderate or high water activity. Also described are methods of producing the granules.
    Type: Application
    Filed: January 30, 2012
    Publication date: August 23, 2012
    Applicant: Danisco US Inc.
    Inventors: Nathaniel T. Becker, Robert I. Christensen, JR., Alfred L. Gaertner, Mahmood M. Ghani, Douglas A. Dale
  • Publication number: 20090120873
    Abstract: Filtration processes and systems are provided for the separation of a filterable fluid stream by a filtration membrane module with uniform transmembrane pressure and flux along the membrane and internal control of membrane fouling via intermittent periodic reduction of the pressure differential between the permeate and retentate sides of the membrane and/or backwashing cycles during separation, recovery, and/or purification of proteins, peptides, nucleic acids, biologically produced polymers and other compounds or materials from aqueous fluids.
    Type: Application
    Filed: September 12, 2008
    Publication date: May 14, 2009
    Inventors: Nathaniel T. Becker, Ryszard Braun, Robert I. Christensen, JR., Stefan Ekbom, Robin Fong, Alexandra Schuler
  • Patent number: 6680031
    Abstract: A fluid bed processing system with a spraying apparatus in accordance with one embodiment of the present invention includes an expansion chamber and at least one spraying apparatus which extends into the expansion chamber. The spraying apparatus has a plurality of single nozzles which are spaced along the spraying apparatus and has at least one fluid passage connected to each of the single nozzles.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: January 20, 2004
    Assignee: Genencor International, Inc.
    Inventors: Bruce A. Bisgrove, Ryszard Braun, Robert I. Christensen, Jr., Robert C. Fewkes, Alfred L. Gaertner, John Reynold, David R. Wight, Antti Kosola
  • Patent number: 6602841
    Abstract: A granule having high stability and low dust is described. The granule includes a hydrated barrier material having moderate or high water activity. Also described are methods of producing the granules.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: August 5, 2003
    Assignee: Genencor International, Inc.
    Inventors: Nathaniel T. Becker, Robert I. Christensen, Jr., Alfred L. Gaertner, Mahmood M. Ghani, Douglas A. Dale
  • Patent number: 6583099
    Abstract: The present invention provides low-density compositions, as well as particulates formed, at least in part, from such compositions. Preferred low-density materials include, for example, hollowspheres, low-density minerals, and low-density wood materials (e.g., sawdust). The low-density compositions of the invention can be formed as particulates, or cores, suitable for use in forming enzyme granules, e.g., marums, layered granules, prills, drum granules, agglomerated granules, or the like. Granules are disclosed having advantageous properties, e.g., low dusting, storage stable, fast enzyme-release profile, low true density, etc. The granules of the invention are especially useful, for example, in liquid detergents and cleaners, such as predominantly aqueous, liquid laundry detergents. In one embodiment, granules are provided having a true, or volumetric, density within a range of from about 0.95 to about 1.4 g/cm3.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: June 24, 2003
    Inventor: Robert I. Christensen, Jr.
  • Patent number: 6534466
    Abstract: The present invention provides low-density compositions, as well as particulates formed, at least in part, from such compositions. Preferred low-density materials include, for example, hollowspheres, low-density minerals, and low-density wood materials (e.g., sawdust). The low-density compositions of the invention can be formed as particulates, or cores, suitable for use in forming enzyme granules, e.g., marums, layered granules, prills, drum granules, agglomerated granules, or the like. Granules are disclosed having advantageous properties, e.g., low dusting, storage stable, fast enzyme-release profile, low true density, etc. The granules of the invention are especially useful, for example, in liquid detergents and cleaners, such as predominantly aqueous, liquid laundry detergents. In one embodiment, granules are provided having a true, or volumetric, density within a range of from about 0.95 to about 1.4 g/cm3.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: March 18, 2003
    Assignee: Genencor International, Inc.
    Inventor: Robert I. Christensen, Jr.
  • Patent number: 6423517
    Abstract: Granules are prepared containing an admixture of protein and salt layered over an inert particle. A preferred amount of salt is about between 63.7 and 84.3% of the total weight of the admixture. Proteins include pharmaceutically important proteins such as hormones, or industrially important proteins such as enzymes including proteases, amylases, lipases and cellulases capable of hydrolyzing substrates such as stains. Inert particles include inorganic salts, sugars, sugar alcohols, small organic molecules such as organic acids or salts, and minerals such as clays or silicates. A binder such as starch or polyethylene oxide may be mixed in with the admixture. A barrier material such as an inorganic salt or organic acid or salt may be in the admixture or coated over the admixture layer. A coating layer of a soluble or water dispersible film-forming polymer may be between the inert particle and admixture layer and/or over the admixture layer.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: July 23, 2002
    Assignee: Genecor International, Inc.
    Inventors: Nathaniel T. Becker, Robert I. Christensen, Jr., Ernst H. Gros