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.

Date of Patent:
May. 15, 2007

Filed:

May. 07, 2004
Applicants:

Shoichiro Yasunami, Shizuoka, JP;

Kazuyoshi Mizutani, Shizuoka, JP;

Inventors:

Shoichiro Yasunami, Shizuoka, JP;

Kazuyoshi Mizutani, Shizuoka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/039 (2006.01); G03F 7/075 (2006.01);
U.S. Cl.
CPC ...
Abstract

A positive resist composition comprising (A) polysiloxane or polysilsesquioxane that has a property of increasing solubility in an alkali developing solution by the action of an acid and contains a group capable of being decomposed with an acid, (B) a compound that generates a sulfonic acid upon irradiation of an actinic ray or radiation and (C) an organic basic compound, wherein an amount of the compound that generates a sulfonic acid upon irradiation of an actinic ray or radiation is from 6 to 20% by weight based on the total solid content of the positive resist composition.


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