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.:

US 7803721 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 28, 2010

Filed:

Mar. 14, 2007
Applicant:

Kazuaki Iwasawa, Yokohama, JP;

Inventor:

Kazuaki Iwasawa, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/469 (2006.01);
U.S. Cl.
CPC ...
Abstract

A semiconductor device includes a deposited-type insulating film disposed on a substrate; a coating-type insulating film disposed on a surface of the deposited-type insulating film and having a film density which is lower than a film density of the deposited-type insulating film; and an intermediate insulating film disposed between the deposited-type insulating film and the coating-type insulating film and having a film density which is intermediate between the film density of the deposited-type insulating film and the film density of the coating-type insulating film.


Find Patent Forward Citations

Iwasawa, Kazuaki. (2010). Semiconductor device and method of manufacturing same (U.S. Patent No. 7803721). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7803721

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