US1655677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of products having a basis of cellulose derivatives
Assignee: Celanese Corp
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Filing: 1925-11-21
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Granted: 1928-01-10
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Expires: 1945-11-21
Abstract
No abstract record available.
Inventors
- 👤 Dickie William Alexander
- 👤 Rooney James Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:40
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/006; B29C43/003; B29C70/00; B29C70/04; B29C70/28; B29C43/02; B29C43/20; B29K; B29K2105/00; B29K2105/26; B29K2311/00; B29K2311/14; B29K2995/00; B29K2995/0018; B29K2995/002; B29K2995/0037; B29K2995/0056; B29K2995/0059; B29K2995/006
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) | 1931-01-09 | 1931-07-11 | 1932-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-01-09 | 1935-07-11 | 1936-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-01-09 | 1939-07-11 | 1940-01-10 | $7700.00 | Window Closed / Lapsed |