Patent US3842124A successfully refreshed from Google Patents.
US3842124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orally administered contrast agents for cholecystography
Assignee: Bracco SpA
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Filing: 1971-11-26
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Granted: 1974-10-15
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Expires: 1991-11-26
Abstract
Abstract 1. A COMPOUND WHICH IS A 3-(3-ACYAMINO-2,4,6-TRIIODOPHENOXY)-ALKOXY)-2-ALKYLPROPIONIC ACID OF THE FORMULA 1-(HOOC-CH(-R'')-CH2-O-(CH2)N-O-),2,4,6-TRI(I-),3-(R-NH-)- CYCLOHEXANE OR A WATER-SOLUBLE SALT OF SAID ACID WITH A PHYSIOLOGICALLY TOLERATED METAL OR AMINE, IN SAID FORMULA R BEING ACETYL OR PROPIONYL, R'' BEING METHYL OR ETHYL, AND N BEING AN INTEGER BETWEEN 2 AND 4.
Inventors
- 👤 E Felder
- 👤 D Pitre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:52
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A COMPOUND WHICH IS A 3-(3-ACYAMINO-2,4,6-TRIIODOPHENOXY)-ALKOXY)-2-ALKYLPROPIONIC ACID OF THE FORMULA
Claim 2
Dependent Claim
10 words
A COMPOUND WHICH IS A 3-(3-ACYAMINO-2,4,6-TRIIODOPHENOXY)-ALKOXY)-2-ALKYLPROPIONIC ACID OF THE FORMULA
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |