US3041368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aromatic nitriles
Assignee: California Research LLC
•
Filing: 1958-09-25
•
Granted: 1962-06-26
•
Expires: 1978-09-25
Abstract
No abstract record available.
Inventors
- 👤 Wilton H Lind
- 👤 John B Wilkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:03
CPC Classifications
C; C07; C07C; C07C253/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE VAPOR PHASE PROCESS FOR THE PRODUCTION OF AROMATIC NITRILES WHICH COMPRISES INTRODUCING VAPORIZED AMMONIA AND SULFUR INTO A REACTION ZONE MAINTAINED AT 450-600*C. INTO CONTACT WITH A VAPORIZED AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED BENZENE AND SUBSTITUTED NAPHTHALENE, CONTAINING AS SOLE SUBSTITUENTS NOT MORE THAN THREE ALKYL GROUPS OF THE FORMULA:
Claim 2
Dependent Claim
55 words
THE VAPOR PHASE PROCESS FOR THE PRODUCTION OF AROMATIC NITRILES WHICH COMPRISES INTRODUCING VAPORIZED AMMONIA AND SULFUR INTO A REACTION ZONE MAINTAINED AT 450-600*C. INTO CONTACT WITH A VAPORIZED AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED BENZENE AND SUBSTITUTED NAPHTHALENE, CONTAINING AS SOLE SUBSTITUENTS NOT MORE THAN THREE ALKYL GROUPS 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) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |