Number | Name | Date | Kind |
---|---|---|---|
3672842 | Florin | Jun 1972 | |
3957495 | Teranishi et al. | May 1976 | |
3979550 | Panken | Sep 1976 | |
4098738 | Buerkley et al. | Jul 1978 | |
4111702 | Fraik | Sep 1978 | |
4322466 | Tomlinson | Mar 1982 | |
4348234 | Cespon | Sep 1982 | |
4525214 | Panken | Jun 1985 | |
4631203 | Schaefer et al. | Dec 1986 | |
5139572 | Kawashima | Sep 1992 | |
5215956 | Kawashima | Jun 1993 |
Entry |
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Petitpierre, J. C., "Dyes And Chemicals For Carbonless Copying Paper: History, Present Situation, Problems And Trends," 1983 Coating Conference, pp. 157-164. |