Patent US2866734A successfully refreshed from Google Patents.
US2866734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-pyridylethyl 2, 4-oxazolidinediones and process
Assignee: US Vitamin Corp
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Filing: 1957-11-06
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Granted: 1958-12-30
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Expires: 1977-11-06
Abstract
No abstract record available.
Inventors
- 👤 Seymour L Shapiro
- 👤 Freedman Louis
- 👤 Ira M Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:02
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/30; C07D263/34; C07D263/44; C07D263/52; C07D413/00; C07D413/02; C07D413/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
AS A COMPOSITION OF MATTER A MEMBER OF THE GROUP CONSISTING OF OXAZOLIDINE 2,4-DIONE HAVING THE FORMULA
Claim 2
Dependent Claim
17 words
AS A COMPOSITION OF MATTER A MEMBER OF THE GROUP CONSISTING OF OXAZOLIDINE 2,4-DIONE HAVING THE 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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |