Patent US4603596A successfully refreshed from Google Patents.
Patent US1400253A successfully refreshed from Google Patents.
Patent US2435340A successfully refreshed from Google Patents.
Patent US3237365A successfully refreshed from Google Patents.
Patent US3190913A successfully refreshed from Google Patents.
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
2026-10-29 20:26
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 |