Patents by Inventor Mark H. Mason

Mark H. Mason 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: 8053582
    Abstract: A cross-linked polyisocyanate polymer and a process for preparation of a polymer having the general structure (I) including reacting an effective amount of tetrazole polyol with isocyanate resin, combining at a temperature in the range of about 50° C. to about 100° C. for a time period in the range of about 1 to about 24 hours and cooling to room temperature producing a cross-linked polyisocyanate polymer.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: November 8, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7857920
    Abstract: A propellant composition including, about 5 to about 30 weight % of a polymeric binder component having about 4 to about 10 weight % of at least one oxygen-rich pre-polymer, about 0.1 to about 2 weight % of at least one isocyanate curative, wherein the curative(s) react with alcohol groups on said pre-polymer(s) to formulate urethane linkages, about 1 to about 20 weight % of at least one plasticizer to improve processability and for oxygen balance of the composition, about 0.01 to about 1.0 weight % of at least one additive including cure catalyst(s) and stabilizer(s), about 1 to about 40 weight % of a mixture of high oxygen content insensitive gas generators in solid form, about 1 to about 50 weight % of at least one oxidizer, and wherein the composition is free of perchlorate.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: December 28, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Mark H. Mason
  • Patent number: 7745633
    Abstract: A linear isocyanate polymer produced by utilizing an effective amount of tetrazole diol or tetrazole polyol, reacting with an effective amount isocyanate resin, and cooling to room temperature producing a linear polyisocyanate polymer.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: June 29, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7601747
    Abstract: A one-pot process for making energetic cast cured binders making di-tetrazoles to produce di-functional di-tetrazole diols for making tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a di-functional monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing a di-tetrazole, purifying said di-tetrazole by recrystallization in a second solvent, and reacting an effective amount of said purified di-tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing a di-tetrazole diol and is prepared in a one-pot process. Embodiments of the present invention further include the monomers produced by the one-pot process described herein.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: October 13, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason, Richard Hollins
  • Patent number: 7557220
    Abstract: A linear isocyanate polymer produced by utilizing an effective amount of tetrazole diol or tetrazole polyol, reacting with an effective amount isocyanate resin, and cooling to room temperature producing a linear polyisocyanate polymer.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 7, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7544811
    Abstract: The present invention discloses monomers of structure (IV) wherein “X” is an alkyl, aryl, or oligoether group, and “R” is an alkyl, aryl, or oligoether group that is chemically bonded to the N1 or N2 position of each of the tetrazole rings. The monomers of the present invention are suitable as binders in energetic compositions.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: June 9, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason, Stephen Fallis, Andrew Chafin
  • Patent number: 7528257
    Abstract: A process for making energetic cast cured binders by making di-tetrazoles to produce di-functional tetrazole diols for producing tetrazole base polymers. Embodiments of the present invention relates generally to a process for preparation of a monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing a di-tetrazole, purifying the di-tetrazole by recrystallization in a second solvent; and reacting an effective amount of the purified di-tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing a di-functional tetrazole diol.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: May 5, 2009
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7517997
    Abstract: A cross-linked polyisocyanate polymer and a process for preparation of a polymer having the general structure (I) including reacting an effective amount of tetrazole polyol with isocyanate resin, combining at a temperature in the range of about 50° C. to about 100° C. for a time period in the range of about 1 to about 24 hours and cooling to room temperature producing a cross-linked polyisocyanate polymer.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: April 14, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7446208
    Abstract: A process for preparation of polymers including reacting an effective amount of tetrazole diols or tetrazole polyols with isocyanate resins to produce tetrazole based linear isocyanate polymers.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: November 4, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7402679
    Abstract: A process for making energetic urethane cured binders by making poly-tetrazoles to produce multi-functional tetrazole polyols for producing tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing poly tetrazole purifying the poly tetrazole by recrystallization or precipitation in a second solvent, and reacting an effective amount of the purified poly-tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing tetrazole polyol. Embodiments of the present invention further include the monomers produced by the processes described herein.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 22, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason, Stephen Fallis, Andrew Chafin, Richard Hollins
  • Patent number: 7396938
    Abstract: A process for making energetic cured binders by making poly-tetrazoles to produce multi-functional tetrazole polyols for producing tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing poly tetrazole, purifying the poly tetrazole by precipitation in a second solvent, and reacting an effective amount of the purified poly tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing tetrazole polyol.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 8, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason, Stephen Fallis, Andrew Chafin
  • Publication number: 20010037598
    Abstract: Cetane improvers based on triglycerides and petroleum fractions are disclosed that are at least one half as effective as commercially sold cetane improvers. In each case, the cetane improvers are nitrates produced through the nitration of medium to long chain compounds containing a double bond. Applications include use with diesel and alcohol fuels intended for use in diesel engines. The nitrates have advantages due to their good performance relative to their nitrogen content. Observed properties of some products indicate they also have lubricity and/or detergency enhancing capabilities when used with diesel fuel.
    Type: Application
    Filed: December 13, 2000
    Publication date: November 8, 2001
    Inventors: Galen J. Suppes, Joseph A. Heppert, Mark H. Mason