P

Inventor

ZHANG CHONGYAO

US4 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG CHONGYAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BOSTIK FINDLEY INC

2 patents

BOSTIK INC

1 patent

ZHANG CHONGYAO

1 patent