US3087964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor phase oxidation of acrolein to acrylic acid
Assignee: EIDP Inc
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Filing: 1959-05-25
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Granted: 1963-04-30
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Expires: 1979-05-25
Abstract
No abstract record available.
Inventors
- 👤 Koch Theodore Augur
- 👤 Robinson Ivan Maxwell
- 👤 Wiley William Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:04
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
PROCESS FOR MANUFACTURING ACRYLIC ACID FROM ACROLEIN WHICH COMPRISES BRINGING ACROLEIN IN THE VAPOR PHASE AT A TEMPERATURE OF FROM 250* C. TO 500* C. IN THE PRESENCE OF OXYGEN INTO CONTACT WITH A CATALYST CONSISTING OF MOLYBDIC OXIDE COMBINED WITH A METAL OXIDE FROM THE GROUP CONSISTING OF THE OXIDES OF COBALT AND NICKEL, THE ATOMIC RATIO OF BASE METAL TO MOLYBDENUM BEING FROM 1:1 TO 0.5:1 AND THEREAFTER SEPARATING ACRYLIC ACID FROM THE EFFLUENT GASES.
Claim 2
Dependent Claim
77 words
PROCESS FOR MANUFACTURING ACRYLIC ACID FROM ACROLEIN WHICH COMPRISES BRINGING ACROLEIN IN THE VAPOR PHASE AT A TEMPERATURE OF FROM 250* C. TO 500* C. IN THE PRESENCE OF OXYGEN INTO CONTACT WITH A CATALYST CONSISTING OF MOLYBDIC OXIDE COMBINED WITH A METAL OXIDE FROM THE GROUP CONSISTING OF THE OXIDES OF COBALT AND NICKEL, THE ATOMIC RATIO OF BASE METAL TO MOLYBDENUM BEING FROM 1:1 TO 0.5:1 AND THEREAFTER SEPARATING ACRYLIC ACID FROM THE EFFLUENT GASES.
References Cited (Backward Citations)
US2398867A
Cited
US2881213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |