US2886573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dehydrocyclizing heterocyclic organic compounds
Assignee: Houdry Process Corp
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Filing: 1956-04-13
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Granted: 1959-05-12
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Sterling E Voltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:46
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE PROCESS FOR DEHYDROCYCLIZING AN ORTHO ALKYL ANILINE OF THE FORMULA
Claim 2
Dependent Claim
11 words
THE PROCESS FOR DEHYDROCYCLIZING AN ORTHO ALKYL ANILINE 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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |