US2809976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of acrylic acid or its derivatives using a cationic complex nickel catalyst
Assignee: BASF SE
•
Filing: 1955-07-14
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Granted: 1957-10-15
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Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 Reppe Walter
- 👤 Friederich Herbert
- 👤 Lautenschlager Hans
- 👤 Laib Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:54
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/14; C07C67/00; C07C67/36; C07C67/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A METHOD OF MANUFACTURING ACRYLIC ACID AND ITS FUNCTIONAL DERIVATIVES BY THE REACTION OF ACETYLENE WITH CARBON MONOXIDE AND A COMPOUND WITH A REACTIVE HYDROGEN ATOM IN THE PRESENCE OF A NICKEL COMPOUND AS A CATALYST, THE IMPROVEMENT WHICH COMPSRISES CARRYING OUT SAID REACTION WHILE USING AS CATALYST A COMPLEX COMPOUND OF A NICKLE COMPOUND SELECTED FROM THE CLASS CONSISTING OF NICKLE BROMIDE AND NICKLE IODIDE AND OF A CARBOXYLIC ACID AMIDE OF THE FORMULA
Claim 2
Dependent Claim
76 words
IN A METHOD OF MANUFACTURING ACRYLIC ACID AND ITS FUNCTIONAL DERIVATIVES BY THE REACTION OF ACETYLENE WITH CARBON MONOXIDE AND A COMPOUND WITH A REACTIVE HYDROGEN ATOM IN THE PRESENCE OF A NICKEL COMPOUND AS A CATALYST, THE IMPROVEMENT WHICH COMPSRISES CARRYING OUT SAID REACTION WHILE USING AS CATALYST A COMPLEX COMPOUND OF A NICKLE COMPOUND SELECTED FROM THE CLASS CONSISTING OF NICKLE BROMIDE AND NICKLE IODIDE AND OF A CARBOXYLIC ACID AMIDE OF THE FORMULA
References Cited (Backward Citations)
US2738364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |