Polytop LLC
38Patents
6Active
38Granted
36Portfolio score
Filing activity: Mar 20, 1972 → Jun 21, 2010 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5542585A | Dispensing closure with pivotably mounted spout and means for limiting travel thereof | Performing Operations; Transporting | 179 | Expired |
| US4625898A | Dispensing closure employing living hinge with cams to momentarily deform hinge and recesses to accept cams | Performing Operations; Transporting | 89 | Expired |
| US4377247A | Dispensing closure employing living hinge | Performing Operations; Transporting | 80 | Expired |
| US4220248A | Closure with hinged lid and cam and spring elements holding lid open or closed | Performing Operations; Transporting | 65 | Expired |
| US4718567A | Child resistant dispensing closure | Performing Operations; Transporting | 55 | Expired |
| US4124151A | Toggle type dispensing closure | Performing Operations; Transporting | 51 | Expired |
| US5271536A | "Flexible holder for ""living"" hinge joining lid to closure body of dispensing closure" | Performing Operations; Transporting | 43 | Expired |
| US4759455A | Child resistant closure with deformable panel | Performing Operations; Transporting | 39 | Expired |
| US4047495A | Child resistant dispensing closures | Performing Operations; Transporting | 38 | Expired |
| US7762438B2 | Dispensing closure with latch back | Performing Operations; Transporting | 36 | Active |
| US7128227B2 | Dispensing closure with stop wall for positive alignment on container | Performing Operations; Transporting | 35 | Expired |
| US3977557A | Container-closure structure employing fitment to prevent closure removal | Performing Operations; Transporting | 29 | Expired |
| US6050459A | Rigid dip tube connector for a liquid spray dispenser | Performing Operations; Transporting | 28 | Expired |
| US4903870A | Dispensing closure | Performing Operations; Transporting | 28 | Expired |
| US4081113A | Child resistant dispensing closure | Performing Operations; Transporting | 27 | Expired |
| USD621260S1 | Dispensing closure | General | 26 | Expired |
| US7637402B2 | Dispensing cap with center channel and helical flow profile | Performing Operations; Transporting | 26 | Active |
| US4047643A | Safety dispensing closure with movable retainer | Performing Operations; Transporting | 25 | Expired |
| US4172540A | Dispensing closure | Performing Operations; Transporting | 25 | Expired |
| US4282991A | Dispensing closure seals | Performing Operations; Transporting | 24 | Expired |
| US7735699B2 | Dispensing closure having a flow conduit with key-hole shape | Performing Operations; Transporting | 22 | Active |
| US4219138A | Dispensing closure utilizing a sealing element supported by a washer spring | Performing Operations; Transporting | 22 | Expired |
| US4209114A | Dispensing closure structures | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4776475A | Child resistant dispensing closure | Performing Operations; Transporting | 21 | Expired |
| US3957181A | Child resistant dispensing closure | Performing Operations; Transporting | 20 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.