US3140296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dioxane derivatives
Assignee: Shell USA Inc
•
Filing: 1963-03-13
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Granted: 1964-07-07
•
Expires: 1983-03-13
Abstract
No abstract record available.
Inventors
- 👤 James D Mcclure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:35
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/10; C07D319/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
THE PROCESS FOR THE PRODUCTION OF 2,5-BIS(HALOALKYL) - 1,4-DIOXANES WHICH COMPRISES CYCLODIMERIZING EPOXYHALOALKANE OF THE FORMULA
Claim 2
Dependent Claim
16 words
THE PROCESS FOR THE PRODUCTION OF 2,5-BIS(HALOALKYL) - 1,4-DIOXANES WHICH COMPRISES CYCLODIMERIZING EPOXYHALOALKANE 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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |