Patent US1750125A successfully refreshed from Google Patents.
Patent US3843713A successfully refreshed from Google Patents.
US3843713A
Expired / Lapsed
US
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16-lower alkoxy lower alkyl,-16-20 w-pentano,pge
Assignee: Novartis Corp
•
Filing: 1972-12-01
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Granted: 1974-10-22
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Expires: 1992-12-01
Abstract
Abstract 16 lower alkoxy lower alkyl -16-20 omega penta-nor PGE, has been prepared thereof.
Inventors
- 👤 N Finch
- 👤 I Vlattas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:05
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07C; C07C405/00; C07C405/0008; C07C405/0041; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
THE NEW KETONE OF THE FORMULA
Claim 2
Dependent Claim
6 words
THE NEW KETONE OF THE FORMULA
Claim 3
Dependent Claim
40 words
A compound as claimed in claim 1, in which formula each of R4 and R5 are hydrogen or alkyl, R6 is alkoxyalkyl and R7 is hydrogen, sodium, potassium or alkyl, wherein alkyl or alkoxy contains up to 4 carbon atoms.
Claim 4
Dependent Claim
36 words
A compound as claimed in claim 1, in which formula each of R4 and R5 are hydrogen or methyl, R6 is 2-ethoxyethyl and R7 is hydrogen, sodium, potassium or alkyl with up to 4 carbon atoms.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |