Patent US3459086A successfully refreshed from Google Patents.
US2890233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron-containing organic compounds
Assignee: Individual
•
Filing: 1952-10-13
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Granted: 1959-06-09
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Expires: 1972-10-13
Abstract
No abstract record available.
Inventors
- 👤 Opfermann Adolf Christia Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:11
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/01; C07C59/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI-A,Y-DIHYDROXYBUTYRATO-FERRIC ACID AND AN ALKALI METAL SALT THEREOF.
Claim 2
Dependent Claim
16 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI-A,Y-DIHYDROXYBUTYRATO-FERRIC ACID AND AN ALKALI METAL SALT THEREOF.
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) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |