Patent US3118902A successfully refreshed from Google Patents.
US3118902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis[1, 2, 3, 5-oxathiadiazole]2, 2'-dioxides and methods for preparing the same
Assignee: Wyeth Holdings LLC
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Filing: 1962-03-30
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Granted: 1964-01-21
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Expires: 1982-03-30
Abstract
No abstract record available.
Inventors
- 👤 Edward E Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:04
CPC Classifications
C; C07; C07D; C07D291/00; C07D291/02; C07D291/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A BIS(1,2,3,5-OXATHIADIAZOLE)2,2''-DIOXIDE OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A BIS(1,2,3,5-OXATHIADIAZOLE)2,2''-DIOXIDE OF THE FORMULA:
Claim 3
Dependent Claim
9 words
THE PROCESS FOR PREPARING A BIS-1,2,3,5-OXATHIADIAZOLE OF THE FORMULA:
Claim 4
Dependent Claim
9 words
THE PROCESS FOR PREPARING A BIS-1,2,3,5-OXATHIADIAZOLE OF 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) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |