US3068873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filters
Assignee: Celanese Corp
•
Filing: 1958-11-24
•
Granted: 1962-12-18
•
Expires: 1978-11-24
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Allman
- 👤 Jr Ralph G Higgins
- 👤 Jack D Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:13
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16; A; A24; A24D; A24D3/00; A24D3/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB406401A
Cited
US2484003A
Cited
US2789563A
Cited
US2688380A
Cited
US2724423A
Cited
US2675852A
Cited
US2772785A
Cited
US2792006A
Cited
US2867219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |