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:
Jan. 09, 2007
Filed:
Jun. 28, 2004
Masatoshi Yamaguchi, Tsukuba, JP;
Tooru Takahashi, Tsukuba, JP;
Sigeru Koibuchi, Tsukuba, JP;
Nobuo Miyadera, Tsukuba, JP;
Masatoshi Yamaguchi, Tsukuba, JP;
Tooru Takahashi, Tsukuba, JP;
Sigeru Koibuchi, Tsukuba, JP;
Nobuo Miyadera, Tsukuba, JP;
Hitachi Chemical Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a polymeric optical waveguide film whose core and clad are constituted from polymer materials and which is characterized in that a protective layer of a polymer material having resistance to solvent attack higher than that observed for the clad is arranged on at least one of the surface and back face of the waveguide film. The present invention thus permits the preparation of such a film, the clad of which is hardly damaged, which is excellent in the resistance to solvent attack and which never undergoes cracking even when it is bought into contact with a commonly used solvent such as acetone.