Patent US3876249A successfully refreshed from Google Patents.
Patent US2230591A successfully refreshed from Google Patents.
US2230591A
Expired / Lapsed
US
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Aliphatic aldehyde condensation products and a process for making them
Assignee: GAF Chemicals Corp
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Filing: 1938-01-27
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Granted: 1941-02-04
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Expires: 1958-01-27
Abstract
No abstract record available.
Inventors
- 👤 Fischer Franz Gottwalt
- 👤 Waibel Alois
- 👤 Zorn Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:03
CPC Classifications
C; C08; C08G; C08G6/00; C08G6/02
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) | 1944-02-04 | 1944-08-05 | 1945-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-04 | 1948-08-05 | 1949-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-04 | 1952-08-05 | 1953-02-04 | $7700.00 | Window Closed / Lapsed |