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. 15, 1993
Filed:
Nov. 18, 1991
Yukiteru Mimura, Shizuoka, JP;
Yasushi Shida, Mishima, JP;
Masaji Kasai, Fujisawa, JP;
Tadashi Ashizawa, Numazu, JP;
Katsushige Gomi, Susono, JP;
Kyowa Hakko Kogyo Co., Ltd., Tokyo, JP;
Abstract
Disclosed is pyrazoloacridone derivatives represented by formula (I): ##STR1## wherein: each of R.sup.1a, R.sup.1b, R.sup.1c and R.sup.1d independently represents hydrogen, lower alkyl, --(CH.sub.2).sub.p --X wherein p represents an integer of 1 to 6, and X represents hydroxy, lower alkoxy or --NR.sup.2a R.sup.2b wherein each of R.sup.2a and R.sup.2b independently represents hydrogen, lower alkyl, or --(CH.sub.2).sub.m --Y wherein m represents an integer of 1 to 6, and Y represents hydroxy, lower alkoxy or --NR.sup.3a R.sup.3b wherein each of R.sup.3a and R.sup.3b independently represents hydrogen or lower alkyl