US2232012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of sheet materials
Assignee: Celanese Corp
•
Filing: 1937-10-02
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Granted: 1941-02-18
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Expires: 1957-10-02
Abstract
No abstract record available.
Inventors
- 👤 Rooney James Henry
- 👤 Hawtin Philip Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:23
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/10; C08L1/12; C08J; C08J5/00; C08J5/18; C08J2301/00; C08J2301/08; C08J2301/10; C08J2301/12; C08J2301/14; C08J2301/16; C08J2301/18; C08J2301/26; C08J2301/28; C08J2301/30
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) | 1944-02-18 | 1944-08-19 | 1945-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-18 | 1948-08-19 | 1949-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-18 | 1952-08-19 | 1953-02-18 | $7700.00 | Window Closed / Lapsed |