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:
Dec. 27, 2011
Filed:
Apr. 10, 2009
Applicants:
Jen Fu Wang, Hsinchu, TW;
Sheng Yen Wu, Hsinchu, TW;
An Pang Tu, Hsinchu, TW;
Kuen Yuan Hwang, Hsinchu, TW;
Inventors:
Jen Fu Wang, Hsinchu, TW;
Sheng Yen Wu, Hsinchu, TW;
An Pang Tu, Hsinchu, TW;
Kuen Yuan Hwang, Hsinchu, TW;
Assignee:
Chang Chun Plastics Co., Ltd., Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 77/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a water soluble photosensitive polyimide polymer, preparation thereof and a photoresist composition containing the same. The water soluble photosensitive polyimide polymer is characterized by having repeat units represented by the following formula (I): the other symbols are defined in the specification].