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:
Apr. 02, 1991
Filed:
Dec. 20, 1988
Yukuo Nishimura, Sagamihara, JP;
Ken Eguchi, Atsugi, JP;
Haruki Kawada, Atsugi, JP;
Yoshinori Tomida, Atsugi, JP;
Takashi Nakagiri, Tokyo, JP;
Kenji Saito, Tokyo, JP;
Toshiaki Kimura, Sagamihara, JP;
Hiroshi Matsuda, Atsugi, JP;
Kunihiro Sakai, Yamato, JP;
Toshihiko Miyazaki, Atsugi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical recording medium is provided which comprises a diacetylene derivative compound and at least one compound selected from the group consisting of azulenium salt compounds, pyrylium dyes, diene compounds, croconic methines, and polymethine compounds. An optical recording method is also provided which comprises a step of writing by irradiating with a radiation ray corresponding to a recording information an optical recording medium comprising a polydiacetylene derivative compound and a compound selected from the above-mentioned group.