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:
Jul. 05, 2011
Filed:
Mar. 31, 2006
Gouki Ohtake, Hitachi, JP;
Kazuhiro Ishibashi, Hitachi, JP;
Keijirou Honda, Hitachi, JP;
Naoki Okuda, Hitachi, JP;
Nori Sasaki, Hitachi, JP;
Gouki Ohtake, Hitachi, JP;
Kazuhiro Ishibashi, Hitachi, JP;
Keijirou Honda, Hitachi, JP;
Naoki Okuda, Hitachi, JP;
Nori Sasaki, Hitachi, JP;
Hitachi Chemical Co., Ltd., Tokyo, JP;
Abstract
A method of evaluating the dissolution rate of a polyimide by Raman spectroscopy, wherein the Raman spectral intensity I(a) of imide groups contained within the polyimide is measured, and I(a) is then compared with the Raman spectral intensity I(b) of imide groups contained within a polyimide with a known dissolution rate. The polyimides are preferably obtained using an aromatic tetracarboxylic dianhydride and/or an aromatic diamine.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile