US2936816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sealing thermoplastic containers
Assignee: Hoechst AG
•
Filing: 1955-08-02
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Granted: 1960-05-17
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Expires: 1975-08-02
Abstract
No abstract record available.
Inventors
- 👤 Lang Helmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:14
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/10; B65B9/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1005; Y10T156/17; Y10T156/1702; Y10T156/1712
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2491226A
Cited
US2679469A
Cited
US2746514A
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US2631646A
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US2646105A
Cited
US2830647A
Cited
US2805973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |