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. 30, 2013
Filed:
May. 13, 2009
Applicants:
Kazuyoshi Uera, Tokyo, JP;
Daisuke Ohno, Tokyo, JP;
Kenji Ishii, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 73/14 (2006.01); C08G 63/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A novel polyimide as a high molecular weight material having a low dielectric constant, a low dielectric loss tangent and low water absorptivity, a polyamic acid capable of generating the above polyimide, the above polyimide and the polyamic acid being obtained by reacting an aromatic diamine, obtained by introducing aromatic amino groups into both terminals of a specific bifunctional phenylene ether oligomer, with an acid anhydride, a process for the production of the polyimide, a process for the production of the polyimide, a film of the polyimide, and a laminate comprising the above film.