Patent US2861080A successfully refreshed from Google Patents.
US2861080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making dioxolanes
Assignee: Dow Chemical Co
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Filing: 1957-07-03
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Granted: 1958-11-18
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Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Peter S Petrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:10
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A PROCESS FOR MAKING A 1,3-DIOXOLANE HAVING THE FORMULA
Claim 2
Dependent Claim
9 words
A PROCESS FOR MAKING A 1,3-DIOXOLANE 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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |