Filcon
4Patents
0Active
4Granted
29Portfolio score
Filing activity: Jul 25, 1986 → Mar 25, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5086768A | Respiratory protective device | Human Necessities | 75 | Expired |
| US4951664A | Mask and method of manufacture | Human Necessities | 56 | Expired |
| US4674492A | Alarm system for respirator apparatus and method of use | Human Necessities | 54 | Expired |
| US6282807A | Roll volume indicator | Performing Operations; Transporting | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.