Hamlet | PM | 1982-87 | Non-porous paper, banded paper, reduced chalk, base treated paper, double wrapped paper, blend and flavour modifications | Achieved low ignition propensity cigarette with subjectives at parity to control |
| | | | |
(Unnamed) | BW | 1983-89 | Non-porous paper, banded paper, slow burn paper | Abandoned goal of self extinguishment to target ignition propensity |
| | | | |
LIP (low ignition propensity) | RJR | 1988-90 | Circumference, expanded tobacco, and paper porosity | No consumer acceptable prototype |
| | | | |
Tomorrow | PM | 1987- | Mass burn rates targeted via expanded tobacco, tobacco cut, paper porosity, additives, and banded wrappers | Achieve successful prototype using banded wrappers (2000 Merit) |
| | | | |
IP (ignition propensity) | RJR | 1991- | Altered blends and paper porosity, use of burn additives | “No significant difference in acceptance” |
| | | | |
Reduce ignition propensity | BW | 1993 | Low porosity paper, burn additives, banded paper, cross hatch papers | No successful prototypes |