Inventor
FUTHEY JOHN A
US13 patents
⚠️ This page may combine multiple inventors who share the name “FUTHEY JOHN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINNESOTA MINING & MFG
9 patentsUS5229797AJul 20, 1993
Multifocal diffractive ophthalmic lenses
MINNESOTA MINING & MFG418 citations98
US5116111AMay 26, 1992
Multi-focal diffractive ophthalmic lenses
MINNESOTA MINING & MFG144 citations98
US5076684ADec 31, 1991
Multi-focal diffractive ophthalmic lenses
MINNESOTA MINING & MFG142 citations98
US5129718AJul 14, 1992
Multi-focal diffractive ophthalmic lenses
MINNESOTA MINING & MFG139 citations97
US5840407ANov 24, 1998
Optical film to simulate beveled glass
MINNESOTA MINING & MFG73 citations96
US4936666AJun 26, 1990
Diffractive lens
MINNESOTA MINING & MFG104 citations96
US5152788AOct 6, 1992
Multifocal diffractive ophthalmic lens and method of manufacture
MINNESOTA MINING & MFG197 citations94
US5285314AFeb 8, 1994
Superzone holographic mirror
MINNESOTA MINING & MFG47 citations92
US4830481AMay 16, 1989
Multifocal diffractive lens
MINNESOTA MINING & MFG110 citations92