Patents by Inventor Matthew T. Hafner

Matthew T. Hafner 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: 9199887
    Abstract: Propellant compositions include an energetic binder, such as nitrocellulose, and a stabilized, encapsulated red phosphorous as a ballistic modifier. The propellant composition may additionally include an energetic plasticizer, such as nitroglycerine. For example, the propellant composition may be formed by mixing a double or multi base propellant that includes nitrocellulose plasticized with nitroglycerine with the stabilized, encapsulated red phosphorus. The propellant compositions may be substantially lead-free and may exhibit improved ballistic properties. Methods of forming such propellant compositions and an ordnance device including such propellant compositions are also disclosed.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: December 1, 2015
    Assignee: Orbital ATK, Inc.
    Inventors: Matthew T. Hafner, Ruben Balangue, Danny D. Clark, John William Westbrook, III
  • Publication number: 20140137996
    Abstract: Propellant compositions include an energetic binder, such as nitrocellulose, and a stabilized, encapsulated red phosphorous as a ballistic modifier. The propellant composition may additionally include an energetic plasticizer, such as nitroglycerine. For example, the propellant composition may be formed by mixing a double or multi base propellant that includes nitrocellulose plasticized with nitroglycerine with the stabilized, encapsulated red phosphorus. The propellant compositions may be substantially lead-free and may exhibit improved ballistic properties. Methods of forming such propellant compositions and an ordnance device including such propellant compositions are also disclosed.
    Type: Application
    Filed: January 28, 2014
    Publication date: May 22, 2014
    Applicant: Alliant Techsystems Inc.
    Inventors: Matthew T. Hafner, Ruben Balangue, Danny D. Clark, John William Westbrook, III
  • Patent number: 8641842
    Abstract: Propellant compositions include an energetic binder, such as nitrocellulose, and a stabilized, encapsulated red phosphorous as a ballistic modifier. The propellant composition may additionally include an energetic plasticizer, such as nitroglycerine. For example, the propellant composition may be formed by mixing a double or multi base propellant that includes nitrocellulose plasticized with nitroglycerine with the stabilized, encapsulated red phosphorus. The propellant compositions may be substantially lead-free and may exhibit improved ballistic properties. Methods of forming such propellant compositions and an ordnance device including such propellant compositions are also disclosed.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: February 4, 2014
    Assignee: Alliant Techsystems Inc.
    Inventors: Matthew T. Hafner, Ruben Balangue, Danny D. Clark, John William Westbrook, III
  • Publication number: 20130048163
    Abstract: Propellant compositions include an energetic binder, such as nitrocellulose, and a stabilized, encapsulated red phosphorous as a ballistic modifier. The propellant composition may additionally include an energetic plasticizer, such as nitroglycerine. For example, the propellant composition may be formed by mixing a double or multi base propellant that includes nitrocellulose plasticized with nitroglycerine with the stabilized, encapsulated red phosphorus. The propellant compositions may be substantially lead-free and may exhibit improved ballistic properties. Methods of forming such propellant compositions and an ordnance device including such propellant compositions are also disclosed.
    Type: Application
    Filed: August 31, 2011
    Publication date: February 28, 2013
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Matthew T. Hafner, Ruben Balangue, Danny D. Clark, John William Westbrook, III
  • Publication number: 20030195284
    Abstract: A method for making an essentially natural rubber latex-free elastic compression bandage. The method includes providing a homogeneous mixture containing from about 20 to about 90 parts by weight synthetic natural rubber, from about 10 to about 80 parts by weight secondary elastomeric compound, fillers and processing aids. The mixture is fed to an extruder to provide an extruded web. The extruded web is calendered to provide a calendered web, and the calendered web is electron beam cured to provide an elastic web having a reduced bio-burden. The reduced bio-burden of the web enables production of bandages without prolonged sterilization techniques.
    Type: Application
    Filed: April 10, 2002
    Publication date: October 16, 2003
    Inventors: Syng L. Paik, Robert A. Wimberly, Matthew T. Hafner, Steven G. McDonald