US3210433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of substituted indenes
Assignee: ExxonMobil Oil Corp
•
Filing: 1962-12-31
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Granted: 1965-10-05
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Chibnik Sheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:13
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C2521/00; C07C2521/12; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A METHOD FOR PRODUCING SUBSTITUTED INDENES THAT COMPRISES CONTACTING A COMPOUND HAVING THE FORMULA:
Claim 2
Independent Claim
14 words
A METHOD FOR PRODUCING SUBSTITUTED INDENES THAT COMPRISES CONTACTING A COMPOUND HAVING 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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |