Inventor

LASLIE DONALD E

US4 patents

⚠️ This page may combine multiple inventors who share the name “LASLIE DONALD E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PHILIP MORRIS INC

2 patents

US5622190AApr 22, 1997

Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core

PHILIP MORRIS INC103 citations95

US5365951ANov 22, 1994

Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core

PHILIP MORRIS INC38 citations90

COURTAULDS FIBRES HOLDINGS LTD

1 patent

US5738119AApr 14, 1998

Filter materials

COURTAULDS FIBRES HOLDINGS LTD20 citations89

PHILIP MORRIS USA INC

1 patent

US7866324B2Jan 11, 2011

Cigarette and filter with cellulosic flavor addition

PHILIP MORRIS USA INC6 citations59