Inventor

STEPAN DANIEL J

US4 patents

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

3M INNOVATIVE PROPERTIES CO

2 patents

US8342180B2Jan 1, 2013

Filtering face-piece respirator that has expandable mask body

3M INNOVATIVE PROPERTIES CO42 citations93

US8375951B2Feb 19, 2013

Buckle and respirator using such buckle, having a deformable cinch bar, and method

3M INNOVATIVE PROPERTIES CO0 citations49

GEBREWOLD YONAS

1 patent

US8118026B2Feb 21, 2012

Filtering face-piece respirator support structure that has living hinges

GEBREWOLD YONAS38 citations88

DAUGAARD DWAYNE D

1 patent

US8066006B2Nov 29, 2011

Filtering face-piece respirator having nose clip molded into the mask body

DAUGAARD DWAYNE D42 citations87