US2118925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dipentene-maleic anhydride reaction product and process of making it
Assignee: Hercules Powder Co
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Filing: 1934-12-08
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Granted: 1938-05-31
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Expires: 1954-12-08
Abstract
No abstract record available.
Inventors
- 👤 Irvin W Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/60; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G67/00; C08G67/04
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) | 1941-05-30 | 1941-11-29 | 1942-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-30 | 1945-11-29 | 1946-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-30 | 1949-11-29 | 1950-05-31 | $7700.00 | Window Closed / Lapsed |