US2677697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic derivatives of substituted cinnamic acids and methods of preparing same
Assignee: Mathieson Chemical Corp
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Filing: 1951-08-30
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Granted: 1954-05-04
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Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 William A Lott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:20
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12; C07C233/89
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
COMPOUNDS OF THE GROUP CONSISTING OF THE FREE BASE, ITS ACID- ADDITION SALTS AND ITS LOWER ALKYL HALIDE QUATERNARY SALTS, THE FREE BASE HAVING THE FORMULA
Claim 2
Dependent Claim
26 words
COMPOUNDS OF THE GROUP CONSISTING OF THE FREE BASE, ITS ACID- ADDITION SALTS AND ITS LOWER ALKYL HALIDE QUATERNARY SALTS, THE FREE BASE 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) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |