Patent US3076814A successfully refreshed from Google Patents.
US3076814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel process for the preparation of tryptophols and to novel compounds produced therein
Assignee: Pharmacia and Upjohn Co
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Filing: 1954-04-28
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Granted: 1963-02-05
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Expires: 1974-04-28
Abstract
No abstract record available.
Inventors
- 👤 Merrill E Speeter
- 👤 William C Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:22
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
IN A PROCESS FOR THE PREPARATION OF 3-(2-HYDROXYETHYL)-INDOLES, THE STEP OF REDUCING WITH LITHIUM ALUMINUM HYDRIDE AN INDOLE HAVING THE FORMULA:
References Cited (Backward Citations)
US2305501A
Cited
US2704763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |