US2940996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
M-hocbhxchzch
Assignee: —
•
Filing: —
•
Granted: 1960-06-14
•
Expires: 1977-06-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:25
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/347; C07C51/367; C07C51/377; C07C59/00; C07C59/40; C07C59/58; C07C59/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
PROCESS FOR THE MANUFACTURE OF COMPOUNDS SUITABLE FOR USE AS X-RAY DIAGNOSTIC AGENTS, WHICH COMPRISES CONDENSING 3-HYDROXY BENZALDEHYDE WITH A MEMBER OF THE GROUP CONSISTING OF ALIPHATIC CARBOXYLIC ACIDS HAVING FROM 3 TO 5 CARBON ATOMS AND THEIR ALKALI METAL SALTS IN THE PRESENCE OF THE ANHYDRIDE OF THE ACID, HYDROGENATING THE ALIPHATIC DOUBLE BOND OF THE OBTAINED A-SUBSTITUTED CINNAMIC ACID, AND TRI-IODINATING THE REDUCED COMPOUND TO FORM A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
73 words
PROCESS FOR THE MANUFACTURE OF COMPOUNDS SUITABLE FOR USE AS X-RAY DIAGNOSTIC AGENTS, WHICH COMPRISES CONDENSING 3-HYDROXY BENZALDEHYDE WITH A MEMBER OF THE GROUP CONSISTING OF ALIPHATIC CARBOXYLIC ACIDS HAVING FROM 3 TO 5 CARBON ATOMS AND THEIR ALKALI METAL SALTS IN THE PRESENCE OF THE ANHYDRIDE OF THE ACID, HYDROGENATING THE ALIPHATIC DOUBLE BOND OF THE OBTAINED A-SUBSTITUTED CINNAMIC ACID, AND TRI-IODINATING THE REDUCED COMPOUND TO FORM A COMPOUND OF THE FORMULA
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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |