US2553008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of unsaturated organic nitriles
Assignee: Texaco Inc
•
Filing: 1948-01-26
•
Granted: 1951-05-15
•
Expires: 1968-01-26
Abstract
No abstract record available.
Inventors
- 👤 William F Sager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:57
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE METHOD OF PREPARING UNSATURATED NITRILES WHICH COMPRISES REACTING HYDROGEN CYANIDE AND A CONJUGATED DIOLEFIN IN THE PRESENCE OF A SOLID CUPROUS SALT UNDER SUBSTANTIALLY ANHYDROUS, LIQUID PHASE CONDITIONS AND IN THE PRESENCE OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN HALIDES AND HALOGEN-CONTAINING ALIPHATIC COMPOUNDS.
Claim 2
Independent Claim
48 words
THE METHOD OF PREPARING UNSATURATED NITRILES WHICH COMPRISES REACTING HYDROGEN CYANIDE AND A CONJUGATED DIOLEFIN IN THE PRESENCE OF A SOLID CUPROUS SALT UNDER SUBSTANTIALLY ANHYDROUS, LIQUID PHASE CONDITIONS AND IN THE PRESENCE OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN HALIDES AND HALOGEN-CONTAINING ALIPHATIC COMPOUNDS.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |