Patents by Inventor Peter T. Randtke

Peter T. Randtke 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).

  • Ultra high purity reagent container with large breakseal
    Patent number: 5041267
    Abstract: A container for high purity chemicals has a quartz or glass breakseal tube, the end of the tube interior of the container forming a thin annular edge, and a glass or quartz disk fused to said thin annular edge closing the tube. The glass or quartz tube is constructed and adapted to receive, in use, an inner tube disposed in the glass or quartz tube; the disk, glass or quartz tube being of such construction that, in use, the disk is broken off the thin annular edge upon application of force thereto by the inner tube.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: August 20, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Peter T. Randtke, Hans-Juergen Graf
  • Chemical refill system
    Patent number: 4859375
    Abstract: A system for automatically filling a bubbler, or other vapor delivery system from a reservoir, is disclosed in which the conduit system is purged and pressurized with inert gas, using a unique refill reservoir, level sensing and valving system.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: August 22, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Bruce A. Lipisko, John C. Schumacher, Richard E. Howard, Peter T. Randtke, Adrian Sandu, Robert E. Fletcher, Hans-Juergen Graf
  • Vacuum vapor transport control
    Patent number: 4842827
    Abstract: A vacuum vapor transport control system and method for controlling the rate of vapor flow from a reagent reservoir into a vacuum system through an orifice calibrated as to size or flow rate using a high purity fixed gas and vapor provided from multiple reservoirs or mixed vapor provided from a single reservoir.
    Type: Grant
    Filed: December 30, 1986
    Date of Patent: June 27, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Hans-Juergen Graf, Robert E. Fletcher, Peter T. Randtke, Bruce E. Rhine, J. R. Monkowski