Patent US2311354A successfully refreshed from Google Patents.
US2357962A
Expired / Lapsed
US
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Manufacture of laminated webs of cellulose ester fibers
Assignee: FIRM SANDOZ Ltd
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Filing: 1940-07-25
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Granted: 1944-09-12
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Expires: 1960-07-25
Abstract
No abstract record available.
Inventors
- 👤 Leemann Hans
- 👤 Rheiner Alfred
- 👤 Hagenbuch Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
D; D21; D21H; D21H11/00; D21H11/16; D21H11/20; C; C08; C08B; C08B3/00; H; H01; H01B; H01B3/00; H01B3/18; H01B3/185; D21H13/00; D21H13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-09-12 | 1948-03-13 | 1948-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-09-12 | 1952-03-13 | 1952-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-09-12 | 1956-03-13 | 1956-09-12 | $7700.00 | Window Closed / Lapsed |