Patent US1976679A successfully refreshed from Google Patents.
US1976679A
Expired / Lapsed
US
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Production of dispersions
Assignee: IG Farbenindustrie AG
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Filing: 1931-05-19
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Granted: 1934-10-09
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Expires: 1951-05-19
Abstract
No abstract record available.
Inventors
- 👤 Fikentscher Hans
- 👤 Wappes Hanns
- 👤 Eifflaender Ludwig
- 👤 Schoeller Conrad
- 👤 Schneeveigt Alwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:47
CPC Classifications
C; C09; C09D; C09D133/00; C09K; C09K23/00; C09K23/017; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06P; D06P1/00; D06P1/44; D06P1/52; D06P1/5207; D06P1/525; D06P1/5257; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/918
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) | 1937-10-08 | 1938-04-09 | 1938-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-08 | 1942-04-09 | 1942-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-08 | 1946-04-09 | 1946-10-09 | $7700.00 | Window Closed / Lapsed |