Database WPI Week 7550, Derwent Publications Ltd., London, GB; AN 75-82424 of JP-A-50 106 944 (Teijin), Aug. 22, 1975. |
Database WPI Week 7515, Derwent Publications Ltd., London, GB; AN 75-25092 of JP-A-50 005 367 (Teijin), Jan. 21, 1975. |
Chemical Abstracts, vol. 118, No. 3, Jan. 18, 1993, Columbus, Ohio, US; Abstract No. 22031t, p. 669 of JP-A-4 001 142 (Teijin), Jan. 6, 1992. |
Japio (Japan Patent Information Organization) Abstract, p. 97 C 926 for JP 4-1142 (Teijin) (JP 4-1142 was published on Jan. 6, 1992). |