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Koji Aburada Patents |
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Inventor: Aburada; Koji
Address: Osaka, JP
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5536819 |
Trisazo compounds imparting deep black color a method for dyeing by using them and an ink contai |
July 16, 1996 |
| A trisazo compound represented by the following formula (I) in the free acid form: ##STR1## wherein Q is an phenyl or naphthyl group both of which may be unsubstituted or substituted; one of the A and B is hydroxy group and the other is amino group; K is 1 or 2; and one of m and |
| 5530105 |
Tetraskisazo compound and ink containing the compound |
June 25, 1996 |
| A tetrakisazo compound represented by the following formula (1) in the free acid form: ##STR1## wherein Q.sub.1 and Q.sub.2 independently represent phenylene or naphthylene group which may be optionally substituted, R.sub.4, R.sub.5 and R.sub.6 independently represent a hydrogen |
| 5489671 |
Trisazo compound imparting black color, method for dyeing by using it and ink containing it |
February 6, 1996 |
| A trisazo compound represented by the following formula (1) in the free acid form: ##STR1## wherein Q' is phenylene group, Q.sup.2 is phenyl or naphtyl group, one of the A and B is a hydroxy group and the other is an amino group, K is 1 or 2, one of m and n is 1 and the other is |
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