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US3261665A
Expired / Lapsed
US
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Process for the treatment of waste sulfuric acid pickle liquor
Assignee: EIDP Inc
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Filing: 1962-11-05
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Granted: 1966-07-19
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Richard K Rathmell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:05
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/02; C01G49/06; C01F; C01F11/00; C01F11/46; C01G49/08; Y; Y10; Y10S; Y10S423/00; Y10S423/01; Y10S423/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US997237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |