US3259646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of p-hydroxybenzonitrile
Assignee: Merck Sharp & Dohme LLC
•
Filing: 1963-05-13
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Granted: 1966-07-05
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Howard E Harris
- 👤 Hershel L Herzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:06
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
IN A PROCESS FOR THE MANUFACTURE OF P-HYDROXYBENZONITRILE THE STEPS WHICH COMPRISE ADMIXING CUPROUS CYANNIDE AND P-HALOGENOPHENOL, WHEREIN THE HALOGEN ATOM OF THE P-HALOGENOPHENOL REACTANT HAS AN ATOMIC WEIGHT GREATER THAN 19, IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FOLLOWING STRUCTURAL FORMULAE
Claim 2
Dependent Claim
47 words
IN A PROCESS FOR THE MANUFACTURE OF P-HYDROXYBENZONITRILE THE STEPS WHICH COMPRISE ADMIXING CUPROUS CYANNIDE AND P-HALOGENOPHENOL, WHEREIN THE HALOGEN ATOM OF THE P-HALOGENOPHENOL REACTANT HAS AN ATOMIC WEIGHT GREATER THAN 19, IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FOLLOWING STRUCTURAL FORMULAE
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |