Patent US2369122A successfully refreshed from Google Patents.
US2369122A
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US
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Treatment of materials
Assignee: Imperial Chemical Industries Ltd
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Filing: 1942-03-02
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Granted: 1945-02-13
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Expires: 1962-03-02
Abstract
No abstract record available.
Inventors
- 👤 Giles Charles Hugh
- 👤 Wilkinson Donald Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:34
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/40; D06P3/42; D06P1/00; D06P1/44; D06P1/62; D06P1/621; D06P1/622; D06P1/625; D06P1/64; D06P1/642; D06P1/649; D06P1/6494; D06P5/00; D06P5/02; D06P5/04; D06P5/06
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) | 1948-02-13 | 1948-08-14 | 1949-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-13 | 1952-08-14 | 1953-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-13 | 1956-08-14 | 1957-02-13 | $7700.00 | Window Closed / Lapsed |