Patent US1963108A successfully refreshed from Google Patents.
US1963108A
Expired / Lapsed
US
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Esters, and process for making the same
Assignee: EIDP Inc
•
Filing: 1932-08-04
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Granted: 1934-06-19
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Expires: 1952-08-04
Abstract
No abstract record available.
Inventors
- 👤 James H Werntz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:39
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04; C07C69/00; C07C69/02; C07C69/04; C07C69/06; C07C69/07; C07C69/12; C07C69/14; C07C69/145; C07C69/22; C07C69/24; C07C69/62; C07C69/63
Claims Analysis
Total Claims: 0
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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) | 1937-06-18 | 1937-12-18 | 1938-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-06-18 | 1941-12-18 | 1942-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-06-18 | 1945-12-18 | 1946-06-19 | $7700.00 | Window Closed / Lapsed |