US2732092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure device
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:34
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/16; B65D51/1605; B65D51/1616
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
A CLOSURE DEVICE FOR CONTAINERS HAVING LIQUIDS CONFINED THEREIN WHICH EVOLVE GASEOUS HYDROGEN, SAID DEVICE COMPRISING (1) A POLYMERIC MEMBRANE COMPRISING POLYETHYLENE, (2) A PERFORATED LID FOR SAID CLOSURE DEVICE, AND (3) A POROUS INTERLINER POSITIONED BETWEEN THE MEMBRANE AND THE OUTER LID CAPABLE OF AFFORDING FREE PASSAGE OF THE HYDROGEN GAS THERETHROUGH FROM ANY PORTION OF THE MEMBRANE THROUGH THE OPENING IN THE LID.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |