Inventor

LI CHUNMAN

CN2 patents

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

PETROCHINA CO LTD

1 patent

US7592379B2Sep 22, 2009

Oil-based dispersing method of drag reduction polymers

PETROCHINA CO LTD6 citations65

FENG LIN

1 patent

US8537120B2Sep 17, 2013

Four-corner cut square Chinese character input method based on excellence code

FENG LIN1 citations41