Patents by Inventor Heinz G. Klein

Heinz G. Klein 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).

  • Metering valve for a metered dose inhaler providing consistent delivery
    Patent number: 7234460
    Abstract: The present invention relates to a novel design for a metering valve that provides improved consistency of formulation delivery. Generally, the metering valve includes (a) a valve stem that generally defines a longitudinal axis and includes a body portion having a metering surface, wherein the longitudinal axis and a plane tangential to at least a portion of the metering surface define an angle from about 2° to about 90°; and (b) a valve body having an internal chamber defined at least in part by the body wall and includes a metering portion configured to substantially conform to the metering surface of the valve stem.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: June 26, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: David J. Greenleaf, Peter D. Hodson, Graham R. Purkins, Gary D. Mahon, Heinz G. Klein
  • Metering valve for a metered dose inhaler providing consistent delivery
    Publication number: 20040139965
    Abstract: The present invention relates to a novel design for a metering valve that provides improved consistency of formulation delivery. Generally, the metering valve includes (a) a valve stem that generally defines a longitudinal axis and includes a body portion having a metering surface, wherein the longitudinal axis and a plane tangential to at least a portion of the metering surface define an angle from about 2° to about 90°; and (b) a valve body having an internal chamber defined at least in part by the body wall and includes a metering portion configured to substantially conform to the metering surface of the valve stem.
    Type: Application
    Filed: September 4, 2003
    Publication date: July 22, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: David J. Greenleaf, Peter D. Hodson, Graham R. Purkins, Gary D. Mahon, Heinz G. Klein