Inventor

HOLMQUIST-BROWN THOMAS W

US18 patents

⚠️ This page may combine multiple inventors who share the name “HOLMQUIST-BROWN THOMAS W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HOLMQUIST-BROWN THOMAS W

3M INNOVATIVE PROPERTIES CO

Respirator having a compressible press fir filter element

Respirator having snap-fit filter cartridge

Respirator and filter cartridge

Filter cartridge inlet grill pattern

Respirator mask body

Filter cartridge having cone of visibility for end-of-service-life-indicator (ESLI)

Filter housing

Strap carriers on a respirator

Respirator fit check sealing devices and methods

Filter systems including patterned optical analyte sensors and optical readers

DWYER GARY E

Filter systems including optical analyte sensors and optical readers

Filter systems including patterned optical analyte sensors and optical readers

RAKOW NEAL A

Patterned chemical sensor having inert occluding layer

Filter cartridge having location-registered view window for end-of-service-life-indicator (ESLI)

MINNESOTA MINING & MFG

Respirator having snap-fit filter cartridge

CASTIGLIONE DAVID M

Respirator harness having collapsible head cradle

HOLMQUIST-BROWN THOMAS W

Filter cartridge having cover for masking service life indicator

3M INNOVATIVE PROPERTIES COMPANY

Respirator fit check sealing devices and methods