Patents by Inventor Andrew C. Campbell

Andrew C. Campbell 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).

  • Patent number: 5696394
    Abstract: A capacitor with a metal-oxide dielectric layer is formed with an upper electrode layer that is electrically connected to an underlying circuit element. The capacitor may be used in forming storage capacitors for DRAM and NVRAM cells. After forming an underlying circuit element, such as a source/drain region of a transistor, a metal-oxide capacitor is formed over the circuit element. An opening is formed through the capacitor and extends to the circuit element. An insulating spacer is formed, and a conductive member is formed that electrically connects the circuit element to the upper electrode layer of the metal-oxide capacitor. Devices including DRAM and NVRAM cells and methods of forming them are disclosed.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: December 9, 1997
    Assignee: Motorola, Inc.
    Inventors: Robert Edwin Jones, Jr., Papu D. Maniar, Andrew C. Campbell, Reza Moazzami
  • Patent number: 5583068
    Abstract: A capacitor with a metal-oxide dielectric layer is formed with an upper electrode layer that is electrically connected to an underlying circuit element. The capacitor may be used in forming storage capacitors for DRAM and NVRAM cells. After forming an underlying circuit element, such as a source/drain region of a transistor, a metal-oxide capacitor is formed over the circuit element. An opening is formed through the capacitor and extends to the circuit element. An insulating spacer is formed, and a conductive member is formed that electrically connects the circuit element to the upper electrode layer of the metal-oxide capacitor. Devices including DRAM and NVRAM cells and methods of forming them are disclosed.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: December 10, 1996
    Assignee: Motorola, Inc.
    Inventors: Robert E. Jones, Jr., Papu D. Maniar, Andrew C. Campbell, Reza Moazzami
  • Patent number: 5578746
    Abstract: Fluctuations may occur in the vapor flux of a chemical being delivered in an otherwise inert gas stream from various causes. For example, the decrease in vapor flux over time may occur due to unintended condensation, instability in the delivery system and for other reasons. It has been discovered that a vapor flux monitor may be used in any system involved in the delivery of a vapor flux of a particular chemical reagent. The apparatus has a small aperture or hole through which a gas sample is introduced under low pressure. The sample undergoes a sudden, rapid pressure drop causing condensation of the reagent vapor into droplets where a relative flux can be determined by a measuring device, such as an in situ particle monitor (ISPM). This information can then be used to adjust the flow rate of the reagent. The vapor flux monitor can be adjusted to remove and analyze specific chemical reagents, and samples may be taken at any suitable point from the system.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: November 26, 1996
    Assignee: Motorola, Inc.
    Inventor: Andrew C. Campbell