P

Inventor

GRAY ROSS T

US13 patents
⚠️ This page may combine multiple inventors who share the name “GRAY ROSS T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHENG WEIGUO

4 patents

NALCO CO

4 patents

CALGON CORP

3 patents

ONDEO NALCO CO

2 patents