US2698337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocyanation
Assignee: Monsanto Chemicals Ltd
•
Filing: 1952-09-13
•
Granted: 1954-12-28
•
Expires: 1972-09-13
Abstract
No abstract record available.
Inventors
- 👤 Rudolph L Heider
- 👤 Harry M Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:27
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE PROCESS OF FACILITATING REACTIONS INVOLVING THE ADDITION OF HYDROCYANIC ACID TO AN A,B-MONO-OLEFINIC ALIPHATIC NITRILE WHICH COMPRISES CONTACTING SAID NITRILE WITH THE SYSTEM: HCN.RCON(CH3)2 IN WHICH R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND THE METHYL RADICAL.
Claim 2
Dependent Claim
40 words
THE PROCESS OF FACILITATING REACTIONS INVOLVING THE ADDITION OF HYDROCYANIC ACID TO AN A,B-MONO-OLEFINIC ALIPHATIC NITRILE WHICH COMPRISES CONTACTING SAID NITRILE WITH THE SYSTEM: HCN.RCON(CH3)2 IN WHICH R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND THE METHYL RADICAL.
References Cited (Backward Citations)
US2460603A
Cited
US2547686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |