Patent US3025131A successfully refreshed from Google Patents.
US3025131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of carbonates from carbonate-containing ores
Assignee: Gulf Research and Development Co
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Filing: 1958-09-11
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Granted: 1962-03-13
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Expires: 1978-09-11
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Lerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:52
CPC Classifications
B; B03; B03B; B03B1/00; B03B1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A PROCESS FOR THE REMOVAL OF CARBONATES FROM CARBONATE-CONTAINING ORES WHICH COMPRISINH: INTRODUCING A
Claim 2
Dependent Claim
14 words
A PROCESS FOR THE REMOVAL OF CARBONATES FROM CARBONATE-CONTAINING ORES WHICH COMPRISINH: INTRODUCING A
References Cited (Backward Citations)
US1959448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |