Patent US3459771A successfully refreshed from Google Patents.
US3459771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,2,5-trisubstituted-5-isonitrile-1,3-dioxolanes
Assignee: BASF Schweiz AG
•
Filing: 1965-10-12
•
Granted: 1969-08-05
•
Expires: 1985-10-12
Abstract
No abstract record available.
Inventors
- 👤 Erwin Nikles
- 👤 Hans-Rudolf Hitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:17
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2254876A
Cited
FR1457767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |