Patent US3384634A successfully refreshed from Google Patents.
US3384634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purifying esters of polyhydric alcohols
Assignee: COLONIAL SUGARS Inc
•
Filing: 1964-07-13
•
Granted: 1968-05-21
•
Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Charles J O'boyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:01
CPC Classifications
C; C07; C07H; C07H9/00; C07H9/02; C07H9/04; C07H1/00; C07H1/06; C07H13/00; C07H13/02; C07H13/04; C07H13/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |