Patent US4723505A successfully refreshed from Google Patents.
Patent US1435650A successfully refreshed from Google Patents.
US1435650A
Expired / Lapsed
US
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Process for the preparation of viscose solutions of cellulose for the production of cellulose films, filaments, or threads
Assignee: Atlas Powder Co
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Filing: 1922-02-09
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Granted: 1922-11-14
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Expires: 1942-02-09
Abstract
No abstract record available.
Inventors
- 👤 Mitscherling Waldemar Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:18
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08
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) | 1925-11-13 | 1926-05-15 | 1926-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-11-13 | 1930-05-15 | 1930-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-11-13 | 1934-05-15 | 1934-11-14 | $7700.00 | Window Closed / Lapsed |