Patent US2440093A successfully refreshed from Google Patents.
US2440093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpene derivatives and method of producing the same
Assignee: Industrial Rayon Corp
•
Filing: 1943-07-12
•
Granted: 1948-04-20
•
Expires: 1963-07-12
Abstract
No abstract record available.
Inventors
- 👤 William O Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:33
CPC Classifications
C; C07; C07C; C07C35/00; C07C35/02; C07C35/08; C07C35/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2089569A
Cited
US2125968A
Cited
US2213477A
Cited
US2220462A
Cited
US2130525A
Cited
US2327053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |