Number | Date | Country | Kind |
---|---|---|---|
92 01237 | Feb 1992 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3271182 | Varlet | Sep 1966 | |
4748079 | Thebault | May 1988 | |
4752503 | Thebault | Jun 1988 | |
4933213 | Fourquier et al. | Jun 1990 | |
5071679 | Heraud et al. | Dec 1991 |
Number | Date | Country |
---|---|---|
2640258 | Jun 1990 | FRX |
Entry |
---|
Chemical Abstract, "Manufacture of Carbon-Based Products", vol. 114, No. 14, 1990, Columbus, Ohio, abstract No. 127824Z, Y. Suda |