Inventor
KETTERER KEVIN R
US13 patents
⚠️ This page may combine multiple inventors who share the name “KETTERER KEVIN R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINE SAFETY APPLIANCES CO
5 patentsUS7089603B2Aug 15, 2006
Adjustable headband
MINE SAFETY APPLIANCES CO21 citations90
US9572392B2Feb 21, 2017
Adjustment mechanism for a headband arrangement of a safety helmet
MINE SAFETY APPLIANCES CO12 citations83
USRE45459EApr 14, 2015
Protective helmet
MINE SAFETY APPLIANCES CO8 citations81
US9949522B2Apr 24, 2018
Suspension connection arrangement for a suspension system of a safety helmet
MINE SAFETY APPLIANCES CO11 citations80
US7296305B2Nov 20, 2007
Adjustable headband
MINE SAFETY APPLIANCES CO17 citations78
MSA TECHNOLOGY LLC
5 patentsUS9642412B2May 9, 2017
Adjustment mechanism for a headband arrangement of a safety helmet
MSA TECHNOLOGY LLC10 citations83
US12369669B2Jul 29, 2025
Systems and methods for providing reliable helmet suspension installation
MSA TECHNOLOGY LLC2 citations68
US12285071B2Apr 29, 2025
Systems and methods for providing an assembly for releasably connecting an inner helmet and outer helmet shell
MSA TECHNOLOGY LLC0 citations60
US12514323B2Jan 6, 2026
Safety helmet
MSA TECHNOLOGY LLC0 citations58
US12011057B2Jun 18, 2024
Safety helmet
MSA TECHNOLOGY LLC1 citations58