Patent US4958328A successfully refreshed from Google Patents.
US3250802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxy esters from tertiary alkoxyalkyl esters
Assignee: Sinclair Research Inc
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Filing: 1962-03-06
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Granted: 1966-05-10
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Expires: 1982-03-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Verdol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:22
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/09; C07C29/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A METHOD FOR THE PRODUCTION OF HYDROXY ESTERS OF THE TYPE
Claim 2
Independent Claim
11 words
A METHOD FOR THE PRODUCTION OF HYDROXY ESTERS OF THE TYPE
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |