Patents by Inventor Lesli B. Cosey

Lesli B. Cosey 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).

  • Production of constant composition gas mixture streams
    Patent number: 6382227
    Abstract: Gas mixtures having precise compositions are prepared by separately pumping the components in liquid phase through piping, vaporizing the components, blending the components and analyzing the mixture for composition. A signal sent to a control unit causes any necessary change in the rate of pumping of the liquid components to reduce the difference between the measured concentration and the desired concentration. When the composition is within desired limits it is charged into gas cylinders.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: May 7, 2002
    Assignee: The BOC Group, Inc.
    Inventors: David W. Birch, André Micke, Shuen-Cheng Hwang, Lesli B. Cosey, Carl W. Schmidt, Robert F. Phillips, D. Bruce Wilson
  • Dynamic gas cylinder filling process
    Patent number: 5826632
    Abstract: A system for filling gas cylinders with a gas mixture having a desired gas composition which includes (a) a gas conduit whose inlet end is connected to two or more gas component supply lines, each provided with a flow adjustment device, and whose outlet end is connected to a gas cylinder filling system, and which is equipped with a gas analyzer, a cumulative gas flow measuring device and, upstream of the gas analyzer, a gas mixing device; and (b) a controller which has provision for receiving signals from the flow measuring device and the gas analyzer and for sending signals to each flow adjustment device.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: October 27, 1998
    Assignee: The BOC Group, Inc.
    Inventors: Andre Micke, Lesli B. Cosey