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US3442908A
Expired / Lapsed
US
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6-dialkylaminofluorans
Assignee: Nisso Kako Co Ltd
•
Filing: 1966-12-02
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Granted: 1969-05-06
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Expires: 1986-12-02
Abstract
No abstract record available.
Inventors
- 👤 Michio Orita
- 👤 Masakichi Yahagi
- 👤 Chiyouzi Enomoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:41
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; C09B11/10; C09B11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2175168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |