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:
Jan. 10, 1989
Filed:
Mar. 21, 1988
Seiji Ueda, Otsu, JP;
Matsushita Electronics Corporation, Kadoma, JP;
Abstract
A MOS capacitor comprising a semiconductor substrate having a pair of spaced trenches in one surface. An isolation region is located in the substrate between the trenches and first polycrystalline silicon films are formed within each of the trenches directly on the substrate. Insulating films are formed on the first polycrystalline film, and a second polycrystalline film is formed on the insulating films. The first and second polycrystalline films function as first and second electrodes of the MOS capacitor and the insulating film as a dielectric layer of the capacitor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile