P

Inventor

HEEFNER DONALD L

US20 patents
⚠️ This page may combine multiple inventors who share the name “HEEFNER DONALD L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SEPRACOR INC

10 patents

SYNERGEN ASSOCIATES INC

3 patents

ZEAGEN INC

3 patents

SEPRACHEM INC

2 patents

UNIVERSAL FOODS CORP

1 patent

HEMASURE INC

1 patent