US2047069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amides
Assignee: General Aniline Works Inc
•
Filing: 1931-04-13
•
Granted: 1936-07-07
•
Expires: 1951-04-13
Abstract
No abstract record available.
Inventors
- 👤 Hentrich Winfrid
- 👤 Keppler Helmut
- 👤 Hintzmann Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:42
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/45; C14; C14C; C14C9/00; C14C9/02; C09; C09K; C09K23/00; C09K23/22; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06; Y10S516/07
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) | 1939-07-07 | 1940-01-06 | 1940-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-07 | 1944-01-06 | 1944-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-07 | 1948-01-06 | 1948-07-07 | $7700.00 | Window Closed / Lapsed |