Inventor
WILLIAMS ELFED I
GB11 patents
⚠️ This page may combine multiple inventors who share the name “WILLIAMS ELFED I”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
3M INNOVATIVE PROPERTIES CO
10 patentsUS6148817ANov 21, 2000
Multi-part headband and respirator mask assembly and process for making same
3M INNOVATIVE PROPERTIES CO94 citations98
US6125849AOct 3, 2000
Respiratory masks having valves and other components attached to the mask by a printed patch of adhesive
3M INNOVATIVE PROPERTIES CO96 citations97
US6070579AJun 6, 2000
Elastomeric composite headband
3M INNOVATIVE PROPERTIES CO66 citations96
US6874499B2Apr 5, 2005
Filter element that has a thermo-formed housing around filter material
3M INNOVATIVE PROPERTIES CO54 citations93
US6286144B1Sep 11, 2001
Protective garments incorporating bands of welded or adhesively-bonded elastomeric material
3M INNOVATIVE PROPERTIES CO64 citations93
US7069931B2Jul 4, 2006
Method of making a filtering face mask that has an exhalation valve attached thereto
3M INNOVATIVE PROPERTIES CO31 citations92
US7007695B2Mar 7, 2006
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks
3M INNOVATIVE PROPERTIES CO30 citations92
US6959709B2Nov 1, 2005
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks
3M INNOVATIVE PROPERTIES CO30 citations92
US6604524B1Aug 12, 2003
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks
3M INNOVATIVE PROPERTIES CO32 citations92
US7497217B2Mar 3, 2009
Method of making a filter cartridge using a thermoforming step
3M INNOVATIVE PROPERTIES CO4 citations60