Patent US1681237A successfully refreshed from Google Patents.
US1681237A
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US
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Insoluble soap and method of making an insoluble soap from aldehyde fatty acid mixtures of mineral oil
Assignee: CLARENCE P BYRNES
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Filing: 1919-03-07
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Granted: 1928-08-21
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Expires: 1939-03-07
Abstract
No abstract record available.
Inventors
- 👤 James Joseph Hidy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:32
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/41
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) | 1931-08-21 | 1932-02-20 | 1932-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-21 | 1936-02-20 | 1936-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-21 | 1940-02-20 | 1940-08-21 | $7700.00 | Window Closed / Lapsed |