US3787565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a diagnostic preparation on the basis of an iron complex labelled with 99m tc
Assignee: US Philips Corp
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Filing: 1971-05-24
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Granted: 1974-01-22
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Expires: 1991-05-24
Abstract
Abstract A METHOD OF PRODUCING A TECHNETIUM LABELLED IRON COMPLEX IN WHICH A SOLUTION OF A TECHNETIUM COMPOUND IS REACTED WITH FERROUS ASCORBATE, THE RESULTANT SOLUTION IS MADE ALKALINE AND THE SOLUTION IS THEN AGITATED IN THE PRESENCE OF AIR UNTIL A VIOLET COLOR APPEARS.
Inventors
- 👤 J Nouel
- 👤 H Renault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:08
CPC Classifications
A; A61; A61K; A61K51/00; A61K51/12; A61K2123/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |