Patents by Inventor Malcolm John Lawrenson

Malcolm John Lawrenson 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).

  • Process for the production of a rhenium heptoxide/alumina disproportionation catalyst
    Patent number: 3974233
    Abstract: A rhenium heptoxide supported on alumina catalyst is prepared by digesting the alumina support with an aqueous solution of ammonium phosphate, ammonium dihydrogen phosphate or diammonium hydrogen phosphate at a temperature in the range ambient to the boiling point of the solution, separating the treated alumina by for example sieving and loading the treated alumina with between 1 and 15% by weight of rhenium heptoxide. The catalyst prepared in this manner is active for the disproportionation of olefinic hydrocarbons.
    Type: Grant
    Filed: October 17, 1974
    Date of Patent: August 10, 1976
    Assignee: BP Chemicals International Limited
    Inventor: Malcolm John Lawrenson