US2726258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of unsaturated nitriles
Assignee: MONSANTE CHEMICAL Co
•
Filing: 1952-12-08
•
Granted: 1955-12-06
•
Expires: 1972-12-08
Abstract
No abstract record available.
Inventors
- 👤 Carlyle J Stehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:31
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
A COMPOSITION COMPRISING AN UNSATURATED NITRILE CONTAINING A MINOR AMOUNT OF METHYLENE BLUE AND A MINOR AMOUNT OF CUPROUS CHLORISE.
Claim 2
Dependent Claim
20 words
A COMPOSITION COMPRISING AN UNSATURATED NITRILE CONTAINING A MINOR AMOUNT OF METHYLENE BLUE AND A MINOR AMOUNT OF CUPROUS CHLORISE.
Claim 3
Dependent Claim
26 words
A PROCESS FOR INHIBITING THE POLYMERIZATION OF UNSATURATED NITRILES WHICH COMPRISES MIXING THEREWITH A MINOR AMOUNT OF CUPROUS CHLORIDE AND A MINOR AMOUNT OF METHYLENE BLUE.
Claim 4
Dependent Claim
26 words
A PROCESS FOR INHIBITING THE POLYMERIZATION OF UNSATURATED NITRILES WHICH COMPRISES MIXING THEREWITH A MINOR AMOUNT OF CUPROUS CHLORIDE AND A MINOR AMOUNT OF METHYLENE BLUE.
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) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |