Patents Assigned to Advanced Delivery & Chemical Systems, Inc.
  • Level control systems for high purity chemical delivery systems
    Patent number: 5711354
    Abstract: A highly reliable digital level sensor assembly is provided to replace optical and capacitance type sensors in high purity chemical delivery systems. The digital level sensor assembly is particularly useful in bulk chemical refill delivery systems for high purity chemicals employing a manifold that ensures contamination free operation and canister change outs with a minimum of valves and tubing.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 27, 1998
    Assignee: Advanced Delivery & Chemical Systems, Inc.
    Inventors: Stephen H. Siegele, Craig M. Noah, John N. Gregg
  • Chemical refill system for high purity chemicals
    Patent number: 5607002
    Abstract: A highly reliable digital level sensor assembly is provided to replace optical and capacitance type sensors in high purity chemical delivery systems. The digital level sensor assembly is particularly useful in bulk chemical refill delivery systems for high purity chemicals employing a manifold that ensures contamination free operation and canister change outs with a minimum of valves and tubing.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: March 4, 1997
    Assignee: Advanced Delivery & Chemical Systems, Inc.
    Inventors: Stephen H. Siegele, Craig M. Noah, John N. Gregg
  • Manifold systems for high purity chemical delivery systems
    Patent number: 5590695
    Abstract: A highly reliable digital level sensor assembly is provided to replace optical and capacitance type sensors in high purity chemical delivery systems. The digital level sensor assembly is particularly useful in bulk chemical refill delivery systems for high purity chemicals employing a manifold that ensures contamination free operation and canister change outs with a minimum of valves and tubing.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 7, 1997
    Assignee: Advanced Delivery & Chemical Systems, Inc.
    Inventors: Stephen H. Siegele, Craig M. Noah, John N. Gregg
  • Bulk containers for high purity chemical delivery systems
    Patent number: 5562132
    Abstract: A highly reliable digital level sensor assembly is provided to replace optical and capacitance type sensors in high purity chemical delivery systems. The digital level sensor assembly is particularly useful in bulk chemical refill delivery systems for high purity chemicals employing a manifold that ensures contamination free operation and canister change outs with a minimum of valves and tubing.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 8, 1996
    Assignee: Advanced Delivery & Chemical Systems, Inc.
    Inventors: Stephen H. Siegele, Craig M. Noah, John N. Gregg
  • Chemical refill system for high purity chemicals
    Patent number: 5465766
    Abstract: A highly reliable bulk chemical refill system for high purity chemicals is provided. The system employs at least one metallic level sensor in a refillable ampule. The refillable ampule of the present invention comprises a metallic level sensor for sensing a high level or full level in the ampule. The metallic level sensor transmits this signal to a control unit that automatically stops the refilling process. Additionally the refillable ampule includes a low level sensor that either provides an automatic signal for starting the refilling process or an audible or visual alarm to alert an operator that the container is empty and requires refilling. At the same time, the low level sensor sends a signal to the processing equipment indicating the empty state of the ampule.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: November 14, 1995
    Assignee: Advanced Delivery & Chemical Systems, Inc.
    Inventors: Stephen H. Siegele, Craig M. Noah, John N. Gregg