Patents by Inventor Robert Charles Callin

Robert Charles Callin 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).

  • Polymerization inhibitor
    Patent number: 6409887
    Abstract: A monomer composition, stabilized against premature polymerization, comprising: a) an ethylenically unsaturated monomer or mixture of monomers polymerizable by free radical initiation, and b) an effective amount, sufficient to inhibit premature polymerization of component (a) of a mixture of: i) 1 to 99% by weight, based on the total weight of components (i) and (ii), of a mixture of at least one aromatic amine and at least one organic acid in a molar ratio of 10:1 to 1:10, and ii) 99 to 1% by weight, based on the total weight of components (i) and (ii), of at least one stable radical compound.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: June 25, 2002
    Assignee: AAH Marks and Company Limited
    Inventors: Anthony Pryce, Robert Charles Callin
  • Polymerisation inhibitor
    Publication number: 20020040174
    Abstract: A monomer composition, stabilized against premature polymerization, comprising: a) an ethylenically unsaturated monomer or mixture of monomers polymerizable by free radical initiation, and b) an effective amount, sufficient to inhibit premature polymerization of component (a) of a mixture of: i) 1 to 99% by weight, based on the total weight of components (i) and (ii), of a mixture of at least one aromatic amine and at least one organic acid in a molar ratio of 10:1 to 1:10, and ii) 99 to 1% by weight, based on the total weight of components (i) and (ii), of at least one stable radical compound.
    Type: Application
    Filed: April 13, 2001
    Publication date: April 4, 2002
    Applicant: A H MARKS AND COMPANY LIMITED
    Inventors: Anthony Pryce, Robert Charles Callin