Patent US2903478A successfully refreshed from Google Patents.
US2903478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
alpha-naphthol bicyclic aryl esters of n-substituted carbamic acids
Assignee: Union Carbide Corp
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Filing: 1958-08-07
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Granted: 1959-09-08
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Expires: 1978-08-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Lambrech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
A; A01; A01N; A01N47/00; A01N47/08; A01N47/10; A01N47/22; C; C07; C07C; C07C271/00; C07C271/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS HAVING THE FORMULA:
Claim 2
Dependent Claim
4 words
COMPOUNDS HAVING THE FORMULA:
References Cited (Backward Citations)
US2578736A
Cited
US2582375A
Cited
US2538513A
Cited
US2677698A
Cited
US2675403A
Cited
US2683735A
Cited
US2776196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |