Inventor
BALDWIN DWIGHT G
US11 patents
⚠️ This page may combine multiple inventors who share the name “BALDWIN DWIGHT G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINNESOTA MINING & MFG
7 patentsUS5444230AAug 22, 1995
Solid state optical reader with bi-directional protocol
MINNESOTA MINING & MFG111 citations96
US5001696AMar 19, 1991
Method of preparing an image access card
MINNESOTA MINING & MFG93 citations95
US4994987AFeb 19, 1991
Image access system providing easier access to images
MINNESOTA MINING & MFG73 citations95
US5357094AOct 18, 1994
Two-channel XOR bar code and optical reader
MINNESOTA MINING & MFG36 citations91
US5233171AAug 3, 1993
Optical reader with power isolation
MINNESOTA MINING & MFG39 citations91
US5465127ANov 7, 1995
Overhead projector with vibration control head
MINNESOTA MINING & MFG7 citations66
US5515123AMay 7, 1996
Condensers for illumination systems
MINNESOTA MINING & MFG5 citations62
3M INNOVATIVE PROPERTIES CO
4 patentsUS10578884B2Mar 3, 2020
Method of making a polarizing beamsplitter array
3M INNOVATIVE PROPERTIES CO1 citations62
US6443577B1Sep 3, 2002
Overhead projection having a friction secured adjustable cantilevered head
3M INNOVATIVE PROPERTIES CO2 citations61
US9841605B2Dec 12, 2017
Optical component array
3M INNOVATIVE PROPERTIES CO1 citations51
US6595646B2Jul 22, 2003
Low profile overhead projector having a foldable post
3M INNOVATIVE PROPERTIES CO0 citations51