Efrem M. Ostrowsky
28Patents
21h-index
9Co-inventors
78Inventor score
Filing activity: Jul 10, 1974 → Apr 26, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4776501A | Self-closing, press-to-open, dispensing closure | Performing Operations; Transporting | 126 | Expired |
| US4487324A | Tamper-evident dispensing closure | Performing Operations; Transporting | 100 | Expired |
| US4887747A | Two-piece, snap-action closure | Performing Operations; Transporting | 93 | Expired |
| US4427126A | Vented closure | Performing Operations; Transporting | 78 | Expired |
| US4470513A | Tamper-indicating closure | Performing Operations; Transporting | 75 | Expired |
| US4478343A | Tamper-indicating closure | Performing Operations; Transporting | 71 | Expired |
| USD292889S | Dispensing closure cap | General | 55 | Expired |
| US4462502A | Threaded closure with liner | Performing Operations; Transporting | 52 | Expired |
| US4986453A | Atomizing pump | Performing Operations; Transporting | 50 | Expired |
| US4458821A | Tamper-indicating closure | Performing Operations; Transporting | 49 | Expired |
| US4414705A | Overcenter hinge | Fixed Constructions | 46 | Expired |
| US3993208A | Safety closure means | Performing Operations; Transporting | 43 | Expired |
| US4402418A | Tamperproof closure | Performing Operations; Transporting | 37 | Expired |
| US4002275A | Safety cap | Performing Operations; Transporting | 35 | Expired |
| US4206851A | Tamperproof closure | Performing Operations; Transporting | 35 | Expired |
| US3968880A | Plastic container | Performing Operations; Transporting | 33 | Expired |
| US4458822A | Tamper-indicating closure | Performing Operations; Transporting | 33 | Expired |
| US4381840A | Threaded closure with free-floating liner | Performing Operations; Transporting | 31 | Expired |
| US4133449A | Plastic container | Performing Operations; Transporting | 27 | Expired |
| US4382521A | Vented closure | Performing Operations; Transporting | 23 | Expired |
| US4369889A | Tamperproof closure | Performing Operations; Transporting | 22 | Expired |
| US4053090A | Cap and valve actuator for spray dispensers | Performing Operations; Transporting | 19 | Expired |
| US4011970A | Safety actuator cap | Performing Operations; Transporting | 19 | Expired |
| USD255012S | Dispenser cap for a pressurized container | General | 15 | Expired |
| US5735438A | Press-to-open dispensing closure | Performing Operations; Transporting | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.