Patent US2079604A successfully refreshed from Google Patents.
US2079604A
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US
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Treatment of materials
Assignee: Celanese Corp
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Filing: 1931-05-28
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Granted: 1937-05-11
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Expires: 1951-05-28
Abstract
No abstract record available.
Inventors
- 👤 Dickie William Alexander
- 👤 Greenwood Ernest Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:52
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B60; B60C; B60C9/00; B60C9/02; B60C9/04; B60C9/06; D06M15/07
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) | 1940-05-10 | 1940-11-09 | 1941-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-10 | 1944-11-09 | 1945-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-10 | 1948-11-09 | 1949-05-11 | $7700.00 | Window Closed / Lapsed |