Patent US413401A successfully refreshed from Google Patents.
US2883384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of reserpine and analogs thereof
Assignee: Research Corp
•
Filing: 1956-05-03
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Granted: 1959-04-21
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Expires: 1976-05-03
Abstract
No abstract record available.
Inventors
- 👤 Robert B Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:25
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/38; C07D307/00; C07D307/77; C07D307/92; C07D401/00; C07D401/02; C07D401/06; C07D493/00; C07D493/02; C07D493/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 4
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 5
Dependent Claim
6 words
ISORESERPIC ACID LACTONE OF THE FORMULA
Claim 6
Dependent Claim
6 words
ISORESERPIC ACID LACTONE OF THE FORMULA
Claim 7
Dependent Claim
8 words
A SALT OF METHYL-ACETYL-3-DEHYDRORESERPATE HAVING THE FOLLOWING FORMULA:
Claim 8
Dependent Claim
8 words
A SALT OF METHYL-ACETYL-3-DEHYDRORESERPATE HAVING THE FOLLOWING 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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |