Patents by Inventor Paul John Middleton

Paul John Middleton 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).

  • Detergent builders/activators derived from the oxidation and acylation of polysaccharides
    Patent number: 6020295
    Abstract: Detergent builder/activators which can be produced from renewable resources are provided. The detergent builder/activators are obtainable by a process comprising subjecting a poly(saccharide) comprising a vicinal diol moiety to the independent steps of a) oxidative cleavage of a vicinal diol moiety with an oxidizing agent for vicinal diols to introduce carboxylic acid functionality, and b) acylation with an acylating agent.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: February 1, 2000
    Assignee: Solvay Interox Limited
    Inventors: Paul Richard Harrison, John Phillip Sankey, Alasdair Stuart Martin, Paul John Middleton
  • Oxidative cleavage of alkenes with a catalyst system containing a source of molybdenum, a source of rutlenium and a phase transfer agent
    Patent number: 5731460
    Abstract: A catalyst system and process for the oxidative cleavage of alkenes with hydrogen peroxide is provided. The catalyst system comprises a source of ruthenium, a source of molybdenum and a phase transfer agent. The process comprises contacting an alkene with the hydrogen peroxide in the presence of the above catalyst system. Sources of ruthenium and molybdenum comprise the metals, salts or complexes. Preferred sources are RuCl.sub.3 and MoO.sub.3. The phase transfer agent is preferably a quaternary ammonium salt. The process usually takes place in the presence of an organic solvent, preferably t-butanol.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: March 24, 1998
    Assignee: Solvay Interox Limited
    Inventors: Alexander Johnstone, Paul John Middleton, Miranda Service, William Ronald Sanderson