Patent US3389164A successfully refreshed from Google Patents.
US3389164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of aryl esters of carbocyclic carboxylic acids
Assignee: Chemische Werke Witten GmbH
•
Filing: 1964-07-31
•
Granted: 1968-06-18
•
Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Renckhoff Gustav
- 👤 Hulsmann Hans-Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:11
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/03; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB314646A
Cited
US2422016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |