Patent US3341565A successfully refreshed from Google Patents.
US3341565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 2, 6-dichlorobenzonitrile
Assignee: Shell USA Inc
•
Filing: 1964-01-17
•
Granted: 1967-09-12
•
Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Hartstra Lenze
- 👤 Haaike J Visser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:22
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS FOR PREPARING 2,6-DICHLOROBENZONITRILE WHICH COMPRISES REACTING IN THE PRESENCE OF A CATALYTIC QUANTITY OF A HETEROCYCLIC NITROGEN BASE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 120*C. TO ABOUT 240*C., 6-CHLORO-2-NITROTOLUENE OR 2,6-DINITROTOLUENE WITH A CHLORINATING AGENT SELECTED FROM ELEMENTAL CHLORINE, SULFURYL CHLORIDE, PHOSPHORUS PENTACHLORIDE, HYDROGEN CHLORIDE, AND THIONYL CHLORIDE.
Claim 2
Dependent Claim
53 words
A PROCESS FOR PREPARING 2,6-DICHLOROBENZONITRILE WHICH COMPRISES REACTING IN THE PRESENCE OF A CATALYTIC QUANTITY OF A HETEROCYCLIC NITROGEN BASE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 120*C. TO ABOUT 240*C., 6-CHLORO-2-NITROTOLUENE OR 2,6-DINITROTOLUENE WITH A CHLORINATING AGENT SELECTED FROM ELEMENTAL CHLORINE, SULFURYL CHLORIDE, PHOSPHORUS PENTACHLORIDE, HYDROGEN CHLORIDE, AND THIONYL CHLORIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |