Patent US3072716A successfully refreshed from Google Patents.
US3072716A
Expired / Lapsed
US
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Substituted indenes
Assignee: BASF Corp
•
Filing: 1959-03-18
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Granted: 1963-01-08
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Expires: 1979-03-18
Abstract
No abstract record available.
Inventors
- 👤 Huebner Charles Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:48
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/347; C07C51/353; C07C211/00; C07C211/33; C07C211/39; C07C211/41; C07C211/42; C07C225/00; C07C225/02; C07C225/14; C07C225/16; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D295/096; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/14; C07D333/20; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A COMPOUND OF THE FORMULA:
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |