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:
Mar. 02, 2004
Filed:
May. 27, 2003
Nobuyoshi Inoue, Tokyo, JP;
Tsuyoshi Sugano, Tokyo, JP;
Seiji Adachi, Tokyo, JP;
Keiichi Tanabe, Tokyo, JP;
Other;
Abstract
A superconductor having at least one Hg—M—Cu—O (M=Ba, Sr and/or Ca) superconducting film provided on a substrate and having a thickness of between 300 Å to 950 Å. The superconductor may be prepared by forming, on a substrate, a precursor laminate composed of a first, M—Cu—O film and a second, Hg—O film. The precursor laminate film-bearing substrate is placed in a closed vacuum chamber together with a first pellet of HgO, MO and CuO and a second pellet of MO and CuO. The contents in the chamber are heated to form, on the substrate, a superconducting Hg—M—Cu—O film. The thickness of the first M—Cu—O film of the precursor is controlled so that the thickness of the superconducting Hg—M—Cu—O film is in the range of between 300 Å to 950 Å.