Patents by Inventor Martin E. Cheney

Martin E. Cheney 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).

  • Photochlorination of 1,1,1,3,3-pentafluoropropane
    Patent number: 6551469
    Abstract: A process for preparing 1-chloro-1,1,3,3,3-pentafluoropropane, CF3CH2CF2Cl, comprising contacting in a reaction zone in the substantial absence of oxygen, reactants comprising chlorine and 1,1,1,3,3-pentafluoropropane, CF3CH2CHF2 (also referred to as HFC-245fa), and subjecting the reactants to actinic radiation, such as UV light at about 2,000 to 4,000 Angstroms, wherein: (1) inert gas is present at a concentration equal to or less than about 5 wt. % of the total weight of reactants; (2) the molar ratio of chlorine to CF3CH2CHF2 is from about 0.2:1 to about 1.5:1; and (3) the concentration of chlorinated product produced having greater than one chlorine present in the molecule is less than or equal to about 10 wt. %.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: April 22, 2003
    Assignee: Honeywell International
    Inventors: Haridasan K. Nair, Michael Van Der Puy, David Nalewajek, Timothy R. Demmin, Andrew J. Poss, David E. Bradley, Ian R. Shankland, Martin E. Cheney