US3241929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibition of calcium sulfate dissolution during brine preparation
Assignee: PPG Industries Inc
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Filing: 1961-04-26
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Granted: 1966-03-22
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Expires: 1981-04-26
Abstract
No abstract record available.
Inventors
- 👤 Gerald K Jordan
- 👤 Claude A Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:51
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/14; C01D3/04; C01D3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A METHOD OF PREPARING AN ALKALI METAL CHLORIDE BRINE BY EXTRACTION OF SOLID ALKALI METAL CHLORIDE WHICH IS CONTAMINATED WITH CALCIUM SULFATE WHICH COMPRISES DISSOLVING THE CONTAMINTED ALKALI METAL CHLORIDE IN WATER IN THE PRESENCE OF A GLUCONATE TO INHIBIT CONCURRENT DISSOLVING OF CALCIUM SULFATE.
Claim 2
Independent Claim
45 words
A METHOD OF PREPARING AN ALKALI METAL CHLORIDE BRINE BY EXTRACTION OF SOLID ALKALI METAL CHLORIDE WHICH IS CONTAMINATED WITH CALCIUM SULFATE WHICH COMPRISES DISSOLVING THE CONTAMINTED ALKALI METAL CHLORIDE IN WATER IN THE PRESENCE OF A GLUCONATE TO INHIBIT CONCURRENT DISSOLVING OF CALCIUM SULFATE.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |