US2621201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of ferro-calcium-citrate
Assignee: Johann G W Opfermann & Sohn
•
Filing: 1950-08-29
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Granted: 1952-12-09
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Expires: 1970-08-29
Abstract
No abstract record available.
Inventors
- 👤 Opfermann Adolf Christia Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/06; A61K31/00; A61K31/28; A61K31/295; C; C07; C07C; C07C59/00; C07C59/235; C07C59/245; C07C59/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
AS A NEW COMPOUND FERRO-CALCIUM-CITRATE OF THE FORMULA:
Claim 2
Dependent Claim
8 words
AS A NEW COMPOUND FERRO-CALCIUM-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) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |