Patent US1824068A successfully refreshed from Google Patents.
US1824068A
Expired / Lapsed
US
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Esters
Assignee: PETROLEUM CHEMICAL Corp
•
Filing: 1930-06-16
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Granted: 1931-09-22
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Expires: 1950-06-16
Abstract
No abstract record available.
Inventors
- 👤 Benjamin T Brooks
- 👤 Eugene J Cardarelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:39
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/74; C07C69/75; C09; C09D; C09D7/00; C09D7/20; C07C2601/00; C07C2601/12; C07C2601/16; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12
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) | 1934-09-21 | 1935-03-23 | 1935-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-21 | 1939-03-23 | 1939-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-21 | 1943-03-23 | 1943-09-22 | $7700.00 | Window Closed / Lapsed |