US3190913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor phase oxidation of propylene and butylene in the presence of an arsenic phosphomolybdate catalyst
Assignee: Shell USA Inc
•
Filing: 1961-04-24
•
Granted: 1965-06-22
•
Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 Lloyd C Fetterly
- 👤 Kenneth F Koetitz
- 👤 George W Conklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:52
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE PROCESS FOR THE CONVERSION OF AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTYLENE TO A REACTION MIXTURE CONTAINING THE ALPHA,BETA-UNSATURATED ALIPHATIC ALDEHYDE AND ALHPA,BETA-UNSATURATED CARBOXYLIC ACID CORRESPONDING TO SAID OLEFIN, WHICH CONSISTS ESSENTIALLY OF REACTING SAID OLEFIN WITH UNCOMBINED MOLECULAR OXYGEN, IN VAPOR PHASE, AT A TEMPERATURE OF FROM ABOUT 450 TO ABOUT 600*C. IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF ARSENIC-CONTAINING PHOSPHOMOLYBDIC ACID HAVING AN ARSENIC COONTENT OF FRO ABOUT 0.1 TO ABOUT 10% BY WEIGHT CALCULATED AS ELEMENTARY ARSENIC.
Claim 2
Dependent Claim
87 words
THE PROCESS FOR THE CONVERSION OF AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTYLENE TO A REACTION MIXTURE CONTAINING THE ALPHA,BETA-UNSATURATED ALIPHATIC ALDEHYDE AND ALHPA,BETA-UNSATURATED CARBOXYLIC ACID CORRESPONDING TO SAID OLEFIN, WHICH CONSISTS ESSENTIALLY OF REACTING SAID OLEFIN WITH UNCOMBINED MOLECULAR OXYGEN, IN VAPOR PHASE, AT A TEMPERATURE OF FROM ABOUT 450 TO ABOUT 600*C. IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF ARSENIC-CONTAINING PHOSPHOMOLYBDIC ACID HAVING AN ARSENIC COONTENT OF FRO ABOUT 0.1 TO ABOUT 10% BY WEIGHT CALCULATED AS ELEMENTARY ARSENIC.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |