US3890318A
Expired / Lapsed
US
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Derivatives of triiodo aminobenzenecarboxylic acids and the preparation thereof
Assignee: Chemie Holding AG
•
Filing: 1973-07-20
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Granted: 1975-06-17
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Expires: 1993-07-20
Abstract
Abstract Derivatives of triiodo-aminobenzene carboxylic acids having the general formula: A PROCESS FOR THEIR PREPARATION AND X-ray contrast agents containing them.
Inventors
- 👤 Werner Dr Obendorf
- 👤 Irmgard Dr Lindner
- 👤 Ernst Schwarzinger
- 👤 Josef Krieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:46
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/195; A; A61; A61K; A61K49/00; A61K49/04; A61K49/0433; A61K49/0438; A61K49/0447; A61K49/0452; A61K49/0495
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 3
Dependent Claim
16 words
A compound according to claim 1, selected from the group consisting of compounds of the formula
Claim 4
Dependent Claim
18 words
A compound according to claim 1 N-(3-(1''-3''''-oxapentamethyleneamino-ethylideneamino)-2,4,6-triiodobenzoyl) -Beta -aminopropionic acid, its lower alkyl ester or pharmaceutically acceptable salt.
Claim 5
Dependent Claim
20 words
A compound according to claim 1 N-(3-(1''-3''''-oxapentamethyleneamino-ethylideneamino)-2,4,6-triiodo-benzoyl) -N-gamma -methoxypropyl- Beta -aminopropionic acid, its lower alkyl ester or pharmaceutically acceptable salt.
Claim 6
Dependent Claim
20 words
A compound according to claim 1, N-(3-(1''-3''''-oxapentamethyleneamino-ethylideneamino)-2,4,6-triiodobenzoyl) -Beta -amino- Alpha -methylpropionic acid, its lower alkyl ester or pharmaceutically acceptable salt.
Claim 7
Dependent Claim
20 words
A compound according to claim 1 N-(3-(1''-3''''-oxapentamethyleneamino-propylideneamino)-2,4,6-triiodobenzoyl) -Beta -amino- Alpha -methylpropionic acid, its lower alkyl ester or pharmaceutically acceptable salt.
Claim 8
Dependent Claim
20 words
A compound according to claim 1 N-(3-(3''-oxapentamethyleneamino)-2,4,6-triiodobenzoyl)- Beta -amino- Alpha -methylpropionic acid, its lower alkyl ester or pharmaceutically acceptable salt.
Claim 9
Dependent Claim
20 words
A compound according to claim 1 N-(3-(1''-3''''-oxapentamethyleneamino-ethylideneamino)-2,4,6-triiodobenzoyl) -Beta -amino- Alpha -ethylpropionic acid, its lower alkyl ester or pharmaceutically acceptable salt.
Claim 10
Dependent Claim
19 words
A compound according to claim 1 N-(3-dimethylaminomethyleneamino)-2,4,6-triiodobenzoyl)- Beta -amino-Alpha -methylpropionic acid, its lower alkyl ester or pharmaceutically acceptable salt.
References Cited (Backward Citations)
US3637824A
Cited
US3334134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |