Patent US3839446A successfully refreshed from Google Patents.
US3839446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ether and sulfide meta-substituted anilides
Assignee: Zeneca Inc
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Filing: 1973-03-22
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Granted: 1974-10-01
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Expires: 1993-03-22
Abstract
Abstract 1. A COMPOUND HAVING THE FORMULA 1-(R-O-),3-(R1-CO-NH-)BENZENE IN WHICH R IS KETOALKYL OF THE FORMULA R2-CO-(CH2)N- IN WHICH N IS 1 OR 2 AND R2 IS ALKYL CONTAINING FROM 1 TO 4 CARBON ATOMS, INCLUSIVE, AND R1 IS ALKYL CONTAINING FROM 2 TO 6 CARBON ATOMS, INCLUSIVE.
Inventors
- 👤 E Teach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:14
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/18; A01N37/22; A01N37/24; C; C07; C07C; C07C233/00; C07C233/01; C07C233/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |