Patents by Inventor Jamshid Jay Hamidi

Jamshid Jay Hamidi 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).

  • Chemical delivery system with ultrasonic fluid sensors
    Patent number: 6264064
    Abstract: A chemical delivery system for delivering chemicals having at least a high purity includes at least one first reservoir for containing a fluid and at least one second reservoir for containing the fluid. The system also includes a first conduit, a first fluid sensor, and a controller. The first conduit is for transferring the fluid over time from the at least one first reservoir to the at least one second reservoir. The first conduit is metallic and has a first end in communication with the at least one first reservoir and a second end in communication with the at least one second reservoir. The fluid being transferred from the at least one first reservoir to the at least one second reservoir flows through the first conduit from the first end to the second end. The first fluid sensor is adjacent the first conduit, and the first fluid sensor is adapted to detect a presence of the fluid and to detect an absence of the fluid in the first conduit.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: July 24, 2001
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Charles Michael Birtcher, Thomas Andrew Steidl, Martin Castaneda Martinez, Jamshid Jay Hamidi