Bilsom AB
7Patents
0Active
7Granted
28Portfolio score
Filing activity: Aug 8, 1979 → Oct 5, 1993
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4674134A | Earmuff having sealing ring including liquid and foam plastic layers | Human Necessities | 103 | Expired |
| US4314553A | Earplug and earplug set | Human Necessities | 97 | Expired |
| US5077836A | Headgear | Human Necessities | 45 | Expired |
| US4671265A | Earplug device | Human Necessities | 44 | Expired |
| US5249309A | Ear defender | Human Necessities | 24 | Expired |
| US5557077A | Hearing-protector plug | Human Necessities | 5 | Expired |
| US4937099A | Coating method and coating slip for substantially inorganic fibrous material | Textiles; Paper | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.