US2802020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of acetonitrile
Assignee: Pure Oil Co
•
Filing: 1956-03-19
•
Granted: 1957-08-06
•
Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 William L Fierce
- 👤 Walter J Sandner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:07
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
THE METHOD OF PREPARING ACETONITRILE COMPRISING REACTING METHANE AND CYANOGEN AT A SUFFICIENTLY HIGH TEMPERATRURE BETWEEN 700-1200*C. TO INDUCE REACTION BETWEEN THE METHANE AND CYANOGEN.
Claim 2
Independent Claim
25 words
THE METHOD OF PREPARING ACETONITRILE COMPRISING REACTING METHANE AND CYANOGEN AT A SUFFICIENTLY HIGH TEMPERATRURE BETWEEN 700-1200*C. TO INDUCE REACTION BETWEEN THE METHANE AND CYANOGEN.
References Cited (Backward Citations)
US2642454A
Cited
US2745864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |