Inventor
KNAUER RICHARD
US12 patents
⚠️ This page may combine multiple inventors who share the name “KNAUER RICHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CABOT SAFETY INTERMEDIATE CORP
8 patentsUS7464786B2Dec 16, 2008
High sound attenuating hearing protection device
CABOT SAFETY INTERMEDIATE CORP56 citations97
USD496722SSep 28, 2004
Stemmed earplug
CABOT SAFETY INTERMEDIATE CORP25 citations92
USD481118SOct 21, 2003
Earplug
CABOT SAFETY INTERMEDIATE CORP41 citations92
USD466995SDec 10, 2002
Earplug
CABOT SAFETY INTERMEDIATE CORP33 citations92
USD528204SSep 12, 2006
Hearing protection device
CABOT SAFETY INTERMEDIATE CORP12 citations83
USD524937SJul 11, 2006
Hearing protection device
CABOT SAFETY INTERMEDIATE CORP12 citations83
USD492768SJul 6, 2004
Earplug
CABOT SAFETY INTERMEDIATE CORP12 citations73
USD492767SJul 6, 2004
Earplug
CABOT SAFETY INTERMEDIATE CORP9 citations73
3M INNOVATIVE PROPERTIES CO
3 patentsUS7727433B2Jun 1, 2010
Hearing protective device and method of making the same
3M INNOVATIVE PROPERTIES CO23 citations92
US7731487B2Jun 8, 2010
Mold for forming a hearing protective device
3M INNOVATIVE PROPERTIES CO14 citations84
US7886744B2Feb 15, 2011
Tube-formed earplug with integral stem
3M INNOVATIVE PROPERTIES CO11 citations83