Patent US2939868A successfully refreshed from Google Patents.
US2939868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1960-06-07
•
Expires: 1977-06-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:12
CPC Classifications
C; C07; C07D; C07D261/00; C07D261/02; C07D261/04; C07D413/00; C07D413/02; C07D413/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
1 words
DL-TRANS-5-METHYL-4-AMINO-3-ISOXAZOLIDONE.
Claim 2
Dependent Claim
1 words
DL-TRANS-5-METHYL-4-AMINO-3-ISOXAZOLIDONE.
Claim 3
Dependent Claim
1 words
D-TRANS-5-METHYL-4-AMINO-3-ISOXAZOLIDONE.
Claim 4
Dependent Claim
1 words
D-TRANS-5-METHYL-4-AMINO-3-ISOXAZOLIDONE.
Claim 5
Dependent Claim
10 words
A PROCESS WHICH COMPRISES CYCLIZING A COMPOUND OF THE FORMULA
Claim 6
Dependent Claim
10 words
A PROCESS WHICH COMPRISES CYCLIZING A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |