P

Inventor

SPENCER DOUGLAS S

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

MINNESOTA MINING & MFG

3 patents
US4773920ASep 27, 1988

Coated abrasive suitable for use as a lapping material

MINNESOTA MINING & MFG145 citations95
US5551961ASep 3, 1996

Abrasive articles and methods of making same

MINNESOTA MINING & MFG55 citations91
US5368618ANov 29, 1994

Method of making a coated abrasive article

MINNESOTA MINING & MFG38 citations91

3M INNOVATIVE PROPERTIES CO

1 patent
US6207246B1Mar 27, 2001

Nonwoven abrasive material roll

3M INNOVATIVE PROPERTIES CO62 citations94