The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2002
Filed:
Jul. 27, 2001
William Nicholas Lawless, Westerville, OH (US);
Charles Frederick Clark, Jr., Columbus, OH (US);
CeramPhysics, Inc., Westerville, OH (US);
Abstract
A capacitive energy storage device for use at cryogenic temperatures is provided including first and second electrode layers having a layer of dielectric material there between. The electrode layers include an electrically conductive material having a formula selected from YBa Cu O and Bi Ca Sr Cu O . A method of storing electrical charge in a capacitive energy storage device is also provided. The method includes the steps of: (i) reducing the temperature of the capacitive energy storage device from a predetermined room temperature to a predetermined cryogenic operating temperature; (ii) applying a first electric field of a first field strength across the dielectric layer, wherein the magnitude of the first field strength is sufficient to cause the storage device to switch from a first operational state to a second operational state, the first operational state is characterized by a first dielectric constant, the second operational state is characterized by a second dielectric constant, and the second dielectric constant is substantially greater than the first dielectric constant; and (iii) charging the capacitive energy storage device in the second operational state.