Patent US3043860A successfully refreshed from Google Patents.
US3043860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of unsaturated nitriles
Assignee: Union Carbide Corp
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Filing: 1959-04-16
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Granted: 1962-07-10
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Expires: 1979-04-16
Abstract
No abstract record available.
Inventors
- 👤 Phillips Benjamin
- 👤 Paul S Starcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:35
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A VAPOR PHASE PROCESS FOR THE PREPARATION OF AN UN-
Claim 2
Dependent Claim
10 words
A VAPOR PHASE PROCESS FOR THE PREPARATION OF AN UN-
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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |