Sigvard Nilsson — 7 Patents at 3M

Sigvard Nilsson has been granted 7 US patents while listed as an inventor at 3M. The first was granted in 1995 and the most recent in March 2021. Sigvard Nilsson ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Sigvard Nilsson in Gnosjö, SE.

Patents per Year

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
10959477	Ear muff attachment having dual axis of rotation	Henrik Nordin, Emil Jonsson	2021-03-30	$50,216,000
8302731	Hearing protector	Henrik Nordin	2012-11-06	$36,579,000
8243943	Hearing protector with removable microphone, amplifier, and loudspeaker unit	Henrik Nordin	2012-08-14
D468063	Ear cap for hearing protection	—	2002-12-31
D465616	Ear cap for hearing protection	—	2002-11-12
D370308	Protective helmet	—	1996-05-28
5384857	Snap-in attachment for ear defender cup	Henrik Nordin	1995-01-24