Patents by Inventor John A. Ripmeester

John A. Ripmeester 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).

  • Clathrate desalination process using an ultrasonic actuator
    Publication number: 20140223958
    Abstract: A freeze desalination process uses cyclopentane (“C5H10”) (14) as an agent for the formation of a gas hydrate as a clathrate (13). A crystallizer vessel (10) containing a mixture of seawater (11) and diffuse bubbles (18) of C5H10 is cooled to allow a gas hydrate phase to form. An ultrasonic transducer (21) located in the bubble stream encourages nucleation and thus clathrate formation.
    Type: Application
    Filed: September 26, 2012
    Publication date: August 14, 2014
    Inventors: Richard A. McCormack, John A. Ripmeester
  • Inclusion complexes of cyclodextrins by agglomeration
    Patent number: 5070081
    Abstract: A combined process is described in which inclusion complexes are formed from guest molecules and cyclodextrins during agglomeration of the cyclodextrins. Sufficient agitation in the presence of a small amount of water results in complex formation and bonding into strong agglomerates. The agglomerates are strong and stable and useful inter alia in foods (the guest molecules are flavors), pharmaceuticals (the guest molecules are drugs) and agriculture (the guest molecules are various agrochemicals).
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: December 3, 1991
    Assignee: National Research Council of Canada
    Inventors: Abdul Majid, John A. Ripmeester