Inventor

WILLIS VIVIAN E

US4 patents

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

PHILIP MORRIS USA INC

2 patents

US7484511B2Feb 3, 2009

Cigarette and filter with downstream flavor addition

PHILIP MORRIS USA INC7 citations69

US7866324B2Jan 11, 2011

Cigarette and filter with cellulosic flavor addition

PHILIP MORRIS USA INC6 citations59

PHILIP MORRIS INC

1 patent

US6761174B2Jul 13, 2004

Cigarette and filter with downstream flavor addition

PHILIP MORRIS INC199 citations94

ZHUANG SHUZHONG

1 patent

US8960199B2Feb 24, 2015

Smoking article with tobacco beads

ZHUANG SHUZHONG49 citations90