Patent US1446872A successfully refreshed from Google Patents.
US1446872A
Expired / Lapsed
US
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Process of making organic oxides
Assignee: CHADELOID CHEMICAL CO
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Filing: 1919-07-02
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Granted: 1923-02-27
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Expires: 1939-07-02
Abstract
No abstract record available.
Inventors
- 👤 Benjamin T Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:01
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/02; C07D301/24; C07D301/26
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) | 1926-02-26 | 1926-08-28 | 1927-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-02-26 | 1930-08-28 | 1931-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-02-26 | 1934-08-28 | 1935-02-27 | $7700.00 | Window Closed / Lapsed |