US2499055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nitriles
Assignee: Honeywell International Inc
•
Filing: 1946-04-02
•
Granted: 1950-02-28
•
Expires: 1966-04-02
Abstract
No abstract record available.
Inventors
- 👤 John N Cosby
- 👤 Jr Michael Erchak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:17
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
THE PROCESS FOR THE PRODUCTION OF AN AROMATIC NITRILE WHICH COMPRISES CONTACTING WITH A CATALYST FOR THE VAPOR PHASE PARTIAL OXIDATION OF BENZENE AND NAPHTHALENE, RESPECTIVELY, TO MALEIC AND PHTHALIC ANHYDRIDE, A GASEOUS MIXTURE CONTAINING OXYGEN, AMMONIA AND AN ORGANIC COMPOUND FROM THE GROUP CONSISTING OF THE ALKYL AND ALKENYL SUBSTITUTED BENZENE AND NAPHTHALENE HYDROCARBONS AND THE INTERMEDIATE PARTIAL OXIDATION PRODUCTS OF SAID HYDROCARBONS IN WHICH THE OXYGEN PRESENT IS DIRECTLY COMBINED WITH ACYCLIC CARBON WITH NO OXYGEN ATOM BEING DIRECTLY LINKED TO MORE THAN ONE OF THE ACYCLIC-CARBON ATOMS AND NO ACYCLIC CARBON ATOM BEING DIRECTLY LINKED TO OXYGEN THROUGH MORE THAN TWO OF ITS VALENCES, SAID GASEOUS MIXTURE CONTAINING AT LEAST 1 MOL AMMONIA FOR EVERY ONE -CN RADICAL IN THE NITRILE REACTION PRODUCT OF SAID ORGANIC COMPOUND AND BEING CONTACTED WITH SAID CATALYST AT TEMPERATURES IN THE RANGE 350* TO 600*C.
Claim 2
Dependent Claim
144 words
THE PROCESS FOR THE PRODUCTION OF AN AROMATIC NITRILE WHICH COMPRISES CONTACTING WITH A CATALYST FOR THE VAPOR PHASE PARTIAL OXIDATION OF BENZENE AND NAPHTHALENE, RESPECTIVELY, TO MALEIC AND PHTHALIC ANHYDRIDE, A GASEOUS MIXTURE CONTAINING OXYGEN, AMMONIA AND AN ORGANIC COMPOUND FROM THE GROUP CONSISTING OF THE ALKYL AND ALKENYL SUBSTITUTED BENZENE AND NAPHTHALENE HYDROCARBONS AND THE INTERMEDIATE PARTIAL OXIDATION PRODUCTS OF SAID HYDROCARBONS IN WHICH THE OXYGEN PRESENT IS DIRECTLY COMBINED WITH ACYCLIC CARBON WITH NO OXYGEN ATOM BEING DIRECTLY LINKED TO MORE THAN ONE OF THE ACYCLIC-CARBON ATOMS AND NO ACYCLIC CARBON ATOM BEING DIRECTLY LINKED TO OXYGEN THROUGH MORE THAN TWO OF ITS VALENCES, SAID GASEOUS MIXTURE CONTAINING AT LEAST 1 MOL AMMONIA FOR EVERY ONE -CN RADICAL IN THE NITRILE REACTION PRODUCT OF SAID ORGANIC COMPOUND AND BEING CONTACTED WITH SAID CATALYST AT TEMPERATURES IN THE RANGE 350* TO 600*C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |