Number | Date | Country | Kind |
---|---|---|---|
2000-137818 | May 2000 | JP |
Number | Name | Date | Kind |
---|---|---|---|
5683805 | Oita et al. | Nov 1997 | A |
Number | Date | Country |
---|---|---|
0 826 542 | Mar 1998 | EP |
Entry |
---|
Database WPI, Section Ch, Week 198215, Derwent Publications Ltd., London, GB; Class A23, AN 1982-29943E, XP002190908, & JP 57 040578 A (Toray Ind Inc), Mar. 6, 1982. |