US1707181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation product from p-halogenated phenolic compounds and aldehydes
Assignee: IG Farbenindustrie AG
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Filing: 1928-03-13
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Granted: 1929-03-26
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Expires: 1948-03-13
Abstract
No abstract record available.
Inventors
- 👤 Weiler Max
- 👤 Wenk Berthold
- 👤 Stotter Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:48
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/41; C07C309/42; C07C37/00; C07C37/11; C07C37/20; C07C39/00; C07C39/24; C07C39/367
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) | 1932-03-25 | 1932-09-24 | 1933-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-03-25 | 1936-09-24 | 1937-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-03-25 | 1940-09-24 | 1941-03-26 | $7700.00 | Window Closed / Lapsed |