Patent US2755298A successfully refreshed from Google Patents.
US2755298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1956-07-17
•
Expires: 1973-07-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:03
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30; C07C231/00; C07C231/06; C07C255/00; C07C255/01; C07C255/23; C07C255/30; C07C255/32; C07C255/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR THE MANUFACTURE OF ACRYLONITRILES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE MANUFACTURE OF ACRYLONITRILES OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2594309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |