Patents by Inventor Carey Schwartz

Carey Schwartz 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).

  • Multiple quantum well device
    Patent number: 5036371
    Abstract: A multiple quantum well device having a wide well and a plurality of narrower wells spaced from each other and sandwiched between a plurality of barriers and with quantum coupling existing between the wells. Semiconductor substrates and optimal well and barrier widths are selected to yield band gaps and charge localization within the wells such that the energy differences between the ground state of the wide well and the N excited states of the narrow wells correspond to the energy of a photon in the desired spectral range.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: July 30, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Carey Schwartz