Patents by Inventor Ian G. Meldrum

Ian G. Meldrum 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: 4877533
    Abstract: Water is separated from a less hydrophilic fluid by contacting the mixture with one face of a membrane having an active layer which consists essentially only of polymers of an unsaturated organic acid with a ratio of carbon atoms to acid groups (not counting any carbon atoms in the acid groups) of not more than six. Water is removed as a vapor from the other side of the membrane.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: October 31, 1989
    Assignee: British Petroleum Company p.l.c.
    Inventors: Ian G. Meldrum, Timothy d. Naylor
  • Patent number: 4788314
    Abstract: A method for producing sulphatoalkyl acrylates or methacrylates having the general formula; ##STR1## where R.sub.1 is H or CH.sub.3, R.sub.2 is one or more alkoxylate groups each of which has from 1 to 4 carbon atoms, comprises reacting a hydroxy alkyl acrylate or methacrylate having the formula; ##STR2## where R.sub.1 and R.sub.2 are as defined above, with chlorosulphonic acid at a temperature of less than C. to form the acid ester. Salts of the acid ester may be produced by reaction with a basic metal salt, ammonium salt or quaternary ammonium salt.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: November 29, 1988
    Assignee: The British Petroleum Company p.l.c.
    Inventors: John N. Hay, Ian G. Meldrum
  • Patent number: 4497663
    Abstract: A method for forming a three-dimensional network containing encapsulated organic material comprises reacting a functionalized polymer and a complementary functional cross-linking agent in the presence of the organic material. The method may be used for recovering oil spilled on sea or land, for treating organic wastes or preventing leakage of oil from tanks or pipelines.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: February 5, 1985
    Assignee: The British Petroleum Company Limited
    Inventors: Robert G. Fisher, Ian G. Meldrum, Alan J. Plomer, Richard A. Robinson