Quantum operational device
Patent 5440148 Issued on August 8, 1995. Estimated Expiration Date: 
April 18, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 18, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesNon-linear quantum dot optical device Patent #: 5291034 InventorAssigneeApplicationNo. 229303 filed on 04/18/1994US Classes:257/21, Light responsive structure250/370.14, Particular detection structure (e.g., MOS, PIN)257/17, With particular barrier dimension257/22, With specified semiconductor materials257/25, Employing resonant tunneling257/E29.071, Quantum box or quantum dot structures (EPO)257/E29.227, Charge transfer device (EPO)257/E29.339, Tunneling diode (EPO)365/114, Semiconductive365/115, Diodes365/175, Diodes365/215OpticalExaminersPrimary: Jackson, JeromeAttorney, Agent or FirmForeign Patent References
International ClassesH01L 029/205H01L 029/88 Foreign Application Priority Data1993-04-16 JPAbstractA quantum operational device includes a plurality of quantum boxes arranged in a plurality of stages isolated by a distance which permits tunnelling of electrons or holes through the distance, uses as bit information the presence or absence of an electron or a hole in each of the quantum boxes, and prohibits tunnelling of an electron or a hole from a quantum box in a stage to another quantum box in an adjacent stage when an electron or a hole exists in the quantum box in the adjacent stage. The device only needs quite low power, performs operation at a high speed, and can be fabricated by a simple manufacturing process.Other References
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