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US2691667A
Expired / Lapsed
US
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Process for the manufacture of diferro-monocalcium-citrate
Assignee: Individual
•
Filing: 1951-11-20
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Granted: 1954-10-12
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Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Opfermann Adolf Christia Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:05
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/41; C07C51/418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
PROCESS FOR THE MANUFACTURE OF DIFERROMONOCALCIUM-CITRATE OF THE FORMULA
Claim 2
Dependent Claim
9 words
PROCESS FOR THE MANUFACTURE OF DIFERROMONOCALCIUM-CITRATE OF THE FORMULA
References Cited (Backward Citations)
US2081547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |