US3139460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibition of isomerization of organic compounds
Assignee: Diamond Shamrock Corp
•
Filing: 1961-07-13
•
Granted: 1964-06-30
•
Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 John L Eisenmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/32; C09K15/322; C07; C07C; C07C7/00; C07C7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR INHIBITING THERMAL ISOMERIZATION OF A MONOMERIC TERMINAL OLEFINIC COMPOUND CONTAINING AT LEAST ONE NON-EQUIVALENT INTERNAL CARBON-TO-CARBON SINGLE BOND, SAID COMPOUND BEING SUSCEPTIBLE TO ISOMERIZATION BY SHIFTING OF THE TERMINAL DOUBLE BOND TO SAID INTERNAL POSITION; WHICH PROCESS COMPRISES ADDING TO SAID OLEFINIC COMPOUND AN ORGANIC PHOSPHITE SELECTED FROM THE GROUP CONSISTING OF (RO)3P, (RO)2POH AND COORDINATION COMPOUNDS THEREOF, WHEREIN EACH OF THE R GROUPS IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT ALKYL AND ARYL HYDROCARBON RADICALS.
Claim 2
Dependent Claim
80 words
A PROCESS FOR INHIBITING THERMAL ISOMERIZATION OF A MONOMERIC TERMINAL OLEFINIC COMPOUND CONTAINING AT LEAST ONE NON-EQUIVALENT INTERNAL CARBON-TO-CARBON SINGLE BOND, SAID COMPOUND BEING SUSCEPTIBLE TO ISOMERIZATION BY SHIFTING OF THE TERMINAL DOUBLE BOND TO SAID INTERNAL POSITION; WHICH PROCESS COMPRISES ADDING TO SAID OLEFINIC COMPOUND AN ORGANIC PHOSPHITE SELECTED FROM THE GROUP CONSISTING OF (RO)3P, (RO)2POH AND COORDINATION COMPOUNDS THEREOF, WHEREIN EACH OF THE R GROUPS IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT ALKYL AND ARYL HYDROCARBON RADICALS.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |