Patent US1815930A successfully refreshed from Google Patents.
US1815930A
Expired / Lapsed
US
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Condensation product of phenols and starches
Assignee: Individual
•
Filing: 1923-10-19
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Granted: 1931-07-28
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Expires: 1943-10-19
Abstract
No abstract record available.
Inventors
- 👤 Emil E Novotny
- 👤 Charles J Romieux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:51
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/38; C08B; C08B31/00; C08B31/08; C08B31/14; C08L; C08L3/00; C08L3/02
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) | 1934-07-27 | 1935-01-26 | 1935-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-07-27 | 1939-01-26 | 1939-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-07-27 | 1943-01-26 | 1943-07-28 | $7700.00 | Window Closed / Lapsed |