US3442948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary aminoalkyl phosphine compounds
Assignee: Research Corp
•
Filing: 1965-11-15
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Granted: 1969-05-06
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Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Robert A Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:52
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/5004; C07F9/53; C07F9/5304
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |