P

Inventor

DEGROOT RICHARD J

US9 patents
⚠️ This page may combine multiple inventors who share the name “DEGROOT RICHARD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

POLY SYSTEMS USA INC

3 patents

GREAT LAKES CHEMICAL CORP

3 patents

(unassigned)

1 patent

DEGROOT RICHARD J

1 patent

ENVIRO TECH INT INC

1 patent