Patents by Inventor Arwyn Theophilus Thomas

Arwyn Theophilus Thomas 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).

  • Primary explosives containing nitrated polybasic lead salt and boron
    Patent number: 3959043
    Abstract: A primary explosive composition consisting of a polybasic lead salt of a di- or a tri-nitro- substituted resorcinol containing 3, 4, 5 or 6 atoms of lead per aromatic nucleus in which a minor proportion of finely-divided boron is entrained within, and dispensed throughout, individual crystals of the polybasic lead salt.
    Type: Grant
    Filed: January 14, 1971
    Date of Patent: May 25, 1976
    Assignee: The Secretary of State for Defence in Her Brittanic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: Kenneth John Holloway, George William Charles Taylor, Arwyn Theophilus Thomas
  • Ignitable compositions comprising lead monoxide and boron
    Patent number: 3954530
    Abstract: Crystalline lead monoxide is precipitated around an aqueous suspension of boron particles to form an ignitable composition having uniform, reproducible properties and good resistance to shock, heat and friction.
    Type: Grant
    Filed: March 7, 1967
    Date of Patent: May 4, 1976
    Assignee: Ministry of Defence
    Inventors: Kenneth John Holloway, George William Charles Taylor, Arwyn Theophilus Thomas
  • Lead salts of di- or tri-nitroresorcinol
    Patent number: 3954822
    Abstract: A new class of primary explosives which are polybasic lead salts of nitro-substituted resorcinols, optionally containing a minor proportion of finely-divided boron dispersed throughout individual crystals; and processes for their manufacture.
    Type: Grant
    Filed: March 7, 1967
    Date of Patent: May 4, 1976
    Assignee: Ministry of Defence
    Inventors: Kenneth John Holloway, George William Charles Taylor, Arwyn Theophilus Thomas