Patent US3271459A successfully refreshed from Google Patents.
US3271459A
Expired / Lapsed
US
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Production of methacrolein
Assignee: Petro Tex Chemical Corp
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Filing: 1963-06-27
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Granted: 1966-09-06
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 William F Brill
- 👤 Alfio J Besozzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:56
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1817; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR THE VAPOR PHASE PRODUCTION OF METHACROLEIM WHICH COMPRISES CONTACTING AN ISOBUTYLENE MIXTURE COMPRISING ABOUT 0.5 TO 3 MOLS OF OXYGEN PER MOL OF ISOBUTYLENE AT TEMPERATURES BETWEEN ABOUT 450*C. TO 650*C. WITH A CATALYST CONTAINING SILVER AND PHOSPHORUS IN AN ATOMIC RATIO OF 1 TO 10 ATOMS OF SILVER PER ATOM OF PHOSPHORUS AS THE OXIDES FOR ABOUT 0.05 TO ABOUT 0.5 SECOND.
Claim 2
Dependent Claim
66 words
A PROCESS FOR THE VAPOR PHASE PRODUCTION OF METHACROLEIM WHICH COMPRISES CONTACTING AN ISOBUTYLENE MIXTURE COMPRISING ABOUT 0.5 TO 3 MOLS OF OXYGEN PER MOL OF ISOBUTYLENE AT TEMPERATURES BETWEEN ABOUT 450*C. TO 650*C. WITH A CATALYST CONTAINING SILVER AND PHOSPHORUS IN AN ATOMIC RATIO OF 1 TO 10 ATOMS OF SILVER PER ATOM OF PHOSPHORUS AS THE OXIDES FOR ABOUT 0.05 TO ABOUT 0.5 SECOND.
References Cited (Backward Citations)
US2398612A
Cited
BE605502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |