Patents by Inventor Dale R. Shackle

Dale R. Shackle 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: 6403528
    Abstract: An electron accepting developer useful for producing visible images by reaction with an electron donor in carbonless paper and photo- imaging systems, the developer comprising an acid-treated, water insoluble alkali metal-modified, inorganic oxide or an acid-treated molecular sieve.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: June 11, 2002
    Assignee: Rentech, Inc.
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Publication number: 20020025909
    Abstract: An electron accepting developer useful for producing visible images by reaction with an electron donor in carbonless paper and photo- imaging systems, the developer comprising an acid-treated, water insoluble alkali metal-modified, inorganic oxide or an acid-treated molecular sieve.
    Type: Application
    Filed: January 10, 2001
    Publication date: February 28, 2002
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Publication number: 20010006749
    Abstract: An electro-active compound particulate coated with a conducting polymer composition finds use in electrochemical cell electrodes.
    Type: Application
    Filed: January 18, 2001
    Publication date: July 5, 2001
    Inventor: Dale R. Shackle
  • Patent number: 6242167
    Abstract: An electron accepting developer useful for producing visible images by reaction with an electron donor in carbonless paper and photo-imaging systems, the developer comprising an acid-treated, water insoluble alkali metal-modified, inorganic oxide or an acid-treated molecular sieve.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: June 5, 2001
    Assignee: Rentech, Inc.
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Patent number: 6174623
    Abstract: An electro-active compound particulate coated with a conducting polymer composition finds use in electrochemical cell electrodes.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: January 16, 2001
    Assignee: Valence Technology, Inc.
    Inventor: Dale R. Shackle
  • Patent number: 6083475
    Abstract: The present invention is a simple and reliable method for producing lithiated metal oxides such as those useful as cathode materials in lithium ion electrochemical cells. The method is based on the use of an organic solvent that dissolves both lithium sulfide and elemental sulfur without dissolving the metal oxide or the lithiated product. Lithium sulfide and the metal oxide as a powder are refluxed in the organic solvent under an inert atmosphere. The organic solvent dissolves the lithium sulfide and the dissolved sulfide reduces the metal oxide allowing the intercalation of lithium. At the same time the sulfur that results from the oxidation-reduction reaction is carried away by the solvent thereby promoting the reaction and preventing contamination of the product with sulfur.
    Type: Grant
    Filed: April 2, 1999
    Date of Patent: July 4, 2000
    Assignee: Rentech, Inc.
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Patent number: 6068949
    Abstract: A method for forming a metal ion intercalation compound and the use thereof as the cathode material in an alkali metal battery. In one embodiment, a metal ion intercalation compound is mixed with an electrically conductive material. The metal ion intercalation compound is represented by the formula:M.sub.x T.sub.y A.sub.zwherein M is an alkali metal ion, wherein T is a metal ion capable of existing in more than one stable oxidation state, and wherein A is a multi-element anion with a negative charge greater than 1.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: May 30, 2000
    Assignee: Rentech, Inc.
    Inventor: Dale R. Shackle
  • Patent number: 6051339
    Abstract: A cathode for use in an electrochemical cell comprising a lithiated isopolyvanadate or heteropolyvanadate wherein the isopolyvanadate or heteropolyvanate has a cage structure, and an electrochemical battery comprising an alkali metal anode, an ionically conductive electrolyte and a cathode which comprises a lithiated isopolyvanadate or heteropolyvanadate having a cage structure, are described.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: April 18, 2000
    Assignee: Rentech, Inc.
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Patent number: 5980855
    Abstract: A method for lithiating a metal compound with lithium metal in the presence of a catalyst, wherein the lithiated metal compound is useful as a cathode in an electrochemical battery, is described.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: November 9, 1999
    Assignee: Rentech, Inc.
    Inventors: Dale R. Shackle, Benjamin Chaloner-Gill
  • Patent number: 5721070
    Abstract: A metal ion intercalation compound suitable for use as the cathode material in an alkali metal battery. In one embodiment, a metal ion intercalation compound is mixed with an electrically conductive material. The metal ion intercalation compound is represented by the formula:M.sub.x T.sub.y A.sub.zwherein M is an alkali metal ion, wherein T is a metal ion capable of existing in more than one stable oxidation state, and wherein A is a multi-element anion with a negative charge greater than 1.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: February 24, 1998
    Inventor: Dale R. Shackle
  • Patent number: 5622791
    Abstract: This invention is directed to a photoelectrochemical cell having increased conductivity. The cell employs an electrolyte formed from a polymeric matrix, an electrolytic solvent, an inorganic ion salt and a redox couple.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: April 22, 1997
    Assignee: Valence Technology, Inc.
    Inventor: Dale R. Shackle
  • Patent number: 5620810
    Abstract: This invention is directed to solid electrolytes containing a solvent and, in particular, a solvent comprising a mixture of an organic carbonate and triglyme as well as electrolytic cells prepared from such solid electrolytes.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: April 15, 1997
    Assignee: Valence Technology, Inc.
    Inventors: Milton N. Golovin, Dale R. Shackle, Russel D. Moulton
  • Patent number: 5573872
    Abstract: Solid electrolytes containing a novel electrolyte salt which has the combined functions of both inorganic salt and electrolytic solvent are provided. The novel electrolyte has the structure: ##STR1## where A is either ##STR2## where Z is oxygen, --O--, sulfide --SH.sub.2 --, or amine ##STR3## is 1 to about 10; where R' is selected from the group consisting of an alkyl group having 1 to about 5 carbon atoms, and an unsubstituted or substituted aromatic group having from 6 to about carbon atoms, and wherein n is independently an integer from 1 to about 5 and R is independently selected from the group consisting of hydrogen, an alkyl group having 1 to about 5 carbon atoms, and an unsubstituted or substituted aromatic group having from 6 to about 11 carbon atoms.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: November 12, 1996
    Inventor: Dale R. Shackle
  • Patent number: 5567547
    Abstract: This invention is directed to solid electrolytes containing a solvent and, in particular, a solvent comprising a mixture of an organic carbonate and glyme as well as electrolytic cells prepared from such solid electrolytes.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: October 22, 1996
    Inventors: Milton N. Golovin, Dale R. Shackle, Russel D. Moulton
  • Patent number: 5541020
    Abstract: This invention is directed to solid electrolytes containing a solvent and, in particular, a solvent comprising a mixture of an organic carbonate and triglyme as well as electrolytic cells prepared from such solid electrolytes. The electrolyte also contains an inorganic ion salt, preferably an alkali metal salt, and most preferably LiPF.sub.6.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: July 30, 1996
    Inventors: Milton N. Golovin, Russell D. Moulton, Dale R. Shackle, Bhuwon Pradhan
  • Patent number: 5491039
    Abstract: This invention is directed to solid electrolytes containing an ion salt which function as a source of ions for producing conductivity. The anion portion of the ion salt is an organometallic structure which is capable of enhancing the ion conduction of electrolytic cells incorporating the solid electrolytes.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: February 13, 1996
    Inventor: Dale R. Shackle
  • Patent number: 5478667
    Abstract: A current collector in electrical contact with an anode of a battery is extended beyond the anode to serve as a heat sink and presents a substantial surface area through which heat is dissipated from inside the battery to the atmosphere. When multiple battery cells are stacked, the current collectors extend to form fins across which air flows to efficiently dissipate heat.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: December 26, 1995
    Inventors: Dale R. Shackle, Jerry L. Morris, Michael E. McAleavey
  • Patent number: 5455127
    Abstract: This invention is directed to a solid electrolyte containing a polymeric matrix, a salt, a solvent, a viscosifying agent, and a flame retardant, as well as electrolytic cells prepared from such solid electrolytes.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: October 3, 1995
    Inventors: Ib I. Olsen, Dale R. Shackle
  • Patent number: 5435054
    Abstract: In a new process for making a cathode current collector assembly, a cathode composition is positioned on a substrate between the substrate and a releasable layer. Next, force is applied on the releasable layer and directed toward the substrate so as to provide a smooth cathode surface in contact with the releasable layer. The cathode composition having the releasable layer maintained thereon is cooled to reduce the tackiness of the cathode composition and then the releasable layer is removed while the cathode composition remains in its condition of reduced tackiness. In an alternative process, the cathode composition is applied and then force is applied immediatly before or simultaneously with cooling the composition to a state of reduced tackiness. An electrolyte composition is applied to the smooth surface cathode and the cathode and electrolyte compositions are cured together. In a final step, an anode layer is applied onto the electrolyte composition to form a cell assembly and further curing may occur.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: July 25, 1995
    Assignee: Valence Technology, Inc.
    Inventors: Pia E. Tonder, Dale R. Shackle
  • Patent number: 5436091
    Abstract: A solid state laminar electrochemical cell comprising:an alkali metal anode layer;a solid ionically conductive electrolyte layer;a cathode composition layer; anda current collector;wherein said electrolyte layer is interposed between said alkali metal anode layer and said cathode layer and said cathode layer is interposed between said electrolyte layer and said current collector, the surface of said current collector which contacts said electrolyte layer being microroughened to enable the cathode layer to tightly adhere to said current collector is disclosed.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: July 25, 1995
    Assignee: Valence Technology, Inc.
    Inventors: Dale R. Shackle, Denis G. Fauteux