Patent US2338395A successfully refreshed from Google Patents.
US1332028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side-chain oxidation
Assignee: COMMERCIAL RES Co
•
Filing: 1919-04-07
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Granted: 1920-02-24
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Expires: 1939-04-07
Abstract
No abstract record available.
Inventors
- 👤 Coblentz Virgil
- 👤 Harold W Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/27; C07C51/275
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) | 1923-02-23 | 1923-08-25 | 1924-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-02-23 | 1927-08-25 | 1928-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-02-23 | 1931-08-25 | 1932-02-24 | $7700.00 | Window Closed / Lapsed |