Patent US3082235A successfully refreshed from Google Patents.
US3082235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-oxa-2-alumina-3-thio cyclo ketones and their preparation
Assignee: Stauffer Chemical Co
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Filing: 1961-07-28
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Granted: 1963-03-19
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Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Stamm Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/066; C07F5/069
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
8 words
A CYCLIC ORGANOALUMINUM COMPOUND HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
8 words
A CYCLIC ORGANOALUMINUM COMPOUND HAVING THE FOLLOWING FORMULA:
Claim 3
Independent Claim
12 words
A METHOD OF PREPARING A CYCLIC ORGANOALUMINUM COMPOUND HAVING THE FOLLOWING FORMULA:
Claim 4
Independent Claim
12 words
A METHOD OF PREPARING A CYCLIC ORGANOALUMINUM COMPOUND HAVING THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US2648650A
Cited
US2973379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |