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:
Jun. 25, 1991
Filed:
Feb. 05, 1990
Shigeki Yokoyama, Nakanuma, Minami Ashigara-shi, Kanagawa, JP;
Tadahisa Sato, Nakanuma, Minami Ashigara-shi, Kanagawa, JP;
Keizo Kimura, Nakanuma, Minami Ashigara-shi, Kanagawa, JP;
Nobuo Furutachi, Nakanuma, Minami Ashigara-shi, Kanagawa, JP;
Osamu Takahashi, Nakanuma, Minami Ashigara-shi, Kanagawa, JP;
Other;
Abstract
A pyrazoloazoleazomethine dye represented by formula (I) ##STR1## wherein, R.sub.1 represents a substituent having a Hammett's substituent constant value of at least 0.6; Za, Zb, and Zc each represents ##STR2## (wherein R.sub.2 represents a hydrogen atom or a substituent), or .dbd.N--; when Zc.dbd.Zb is a carbon-carbon double bond, it may form a part of an aromatic ring; R.sub.3, R.sub.4, and R.sub.5 each represents a hydrogen atom or a substituent; and n represents 1 or 2; said dye may form a dimer or higher polymer by combining with each other or to a polymer through a divalent or higher valent group at R.sub.1, Za, Zb, or Zc.