Patent US3427344A successfully refreshed from Google Patents.
US3427344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of unsaturated carboxylic acid esters
Assignee: Individual
•
Filing: 1964-03-16
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Granted: 1969-02-11
•
Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Jiro Tsuji
- 👤 Jitsuo Kiji
- 👤 Shinzo Imamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:32
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54; C07C17/00; C07C17/093; C07C17/10; C07C67/00; C07C67/36; C07C67/37; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR THE PREPARATION OF B,Y- UNSATURATED CARBOXYLIC ACID ESTER, WHEREIN AN ALLYLIC COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
18 words
A PROCESS FOR THE PREPARATION OF B,Y- UNSATURATED CARBOXYLIC ACID ESTER, WHEREIN AN ALLYLIC COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2871262A
Cited
US3009947A
Cited
US3040090A
Cited
DE1138760B
Cited
US3119861A
Cited
US3309403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |