Patent US3294790A successfully refreshed from Google Patents.
US3294790A
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Method of preparing heterocyclic aldehydes
Assignee: SmithKline Beecham Corp
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Filing: 1963-05-02
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Granted: 1966-12-27
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Expires: 1983-05-02
Abstract
No abstract record available.
Inventors
- 👤 Harfenist Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:30
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/06; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/86; C07D265/00; C07D265/28; C07D265/34; C07D265/38; C07D513/00; C07D513/02; C07D513/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE METHOD OF PREPARING A HETEROCYCLIC ALDEHYDE REPRESENTED BY THE FORMULA
Claim 2
Independent Claim
11 words
THE METHOD OF PREPARING A HETEROCYCLIC ALDEHYDE REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
AT119189B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |