Number | Name | Date | Kind |
---|---|---|---|
2937993 | Pattenden | May 1960 | |
2959547 | Brillhart | Nov 1960 | |
3983042 | Jain et al. | Sep 1976 | |
4401579 | Kratzer | Aug 1983 | |
4402839 | Davis et al. | Sep 1983 | |
4409113 | Bertell | Oct 1983 | |
4454050 | Bertell | Jun 1984 | |
4533481 | Jahnke | Aug 1985 |
Entry |
---|
Smalheer and Smith, "Lubricant Additives", 1967, pp. 9-10. |