US2562495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration of caustic alkali
Assignee: Diamond Shamrock Corp
•
Filing: 1948-08-10
•
Granted: 1951-07-31
•
Expires: 1968-08-10
Abstract
No abstract record available.
Inventors
- 👤 Richard E Hulme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:13
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/06; B01D1/065; C; C01; C01D; C01D1/00; C01D1/04; C01D1/42; Y; Y10; Y10S; Y10S159/00; Y10S159/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1006823A
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US2309412A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |