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Inventor

FANG JIAFU

US17 patents
⚠️ This page may combine multiple inventors who share the name “FANG JIAFU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ILLINOIS TOOL WORKS

5 patents

PENNZOIL PROD CO

3 patents

PENNZOIL QUAKER STATE CO

2 patents

ASHLAND INC

2 patents

FANG JIAFU

2 patents

SHELL OIL CO

1 patent

PENNZOIL QUAKER STATE

1 patent

PENNZOIL

1 patent