Patents by Inventor Dennis T. Curran

Dennis T. Curran 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).

  • N-O-carboxymethylchitosonium carboxylate salts
    Patent number: 5412084
    Abstract: New derivatives of carboxymethyl chitosan are disclosed, which are designated as N,O-Carboxymethylchitosonium carboxylates. The derivatives are ammonium salts made by acidifying a substantially neutral suspension of solid N,O-carboxymethyl chitosan in a diluent with an aqueous solution of the carboxylic acid. The carboxylic acid substitutes on the primary amine sites of the N,O-carboxymethyl chitosan.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: May 2, 1995
    Assignee: Nova Chem Limited
    Inventors: Clive M. Elson, Dennis T. Curran, Susan E. Henderson
  • Acoustic gel
    Patent number: 5382286
    Abstract: A method for reducing cavitation around underwater acoustic projectors is described. The projector is cleaned with a surfactant and then encapsulated with an aqueous gel containing a polysaccharide polymer such as a chitosan derivative, a hydrophilic stabilizer and a biocide.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: January 17, 1995
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventors: Bryce L. Fanning, Dennis T. Curran, Clive M. Elson