Patent US3330622A successfully refreshed from Google Patents.
US3330622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dehydrating aluminum sulfate
Assignee: Olin Corp
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Filing: 1963-06-28
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Granted: 1967-07-11
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
- 👤 Walter C Saeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:35
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/68; C01F7/74; C01F7/746
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR DEHYDRATING ALUMINUM SULFATE WHICH COMPRISES HEATING HYDRATED ALUMINUM SULFATE IN THE PRESENCE OF FROM 2 TO 12 PERCENT SULFATE ACID AT A TEMPERATURE MAINTAINED BELOW THE FUSION TEMPERATURE OF SAID ALUMINUM SULFATE, SAID HEATING BEING COMMENCED AT A TEMPERATURE BELOW 186*F.
Claim 2
Dependent Claim
44 words
A PROCESS FOR DEHYDRATING ALUMINUM SULFATE WHICH COMPRISES HEATING HYDRATED ALUMINUM SULFATE IN THE PRESENCE OF FROM 2 TO 12 PERCENT SULFATE ACID AT A TEMPERATURE MAINTAINED BELOW THE FUSION TEMPERATURE OF SAID ALUMINUM SULFATE, SAID HEATING BEING COMMENCED AT A TEMPERATURE BELOW 186*F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |