Patent US2903457A successfully refreshed from Google Patents.
US2903457A
Expired / Lapsed
US
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Isomer of cycloheximide and process
Assignee: Pharmacia and Upjohn Co
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Filing: 1957-01-22
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Granted: 1959-09-08
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Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Jared H Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:46
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/80; C07D211/84; C07D211/86; C07D211/88; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/897
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
6 words
A COMPOUND HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2574519A
Cited
US2612502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |