Patent US2623905A successfully refreshed from Google Patents.
US2623905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aliphatic aldehydes
Assignee: Universal Oil Products Co
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Filing: 1950-08-23
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Granted: 1952-12-30
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Expires: 1970-08-23
Abstract
No abstract record available.
Inventors
- 👤 Pines Herman
- 👤 Vladimir N Ipatieff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:02
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PROCESS FOR PRODUCING ISOVALERALDEHYDE WHICH COMPRISES REACTING ONE MOLECULAR PROPORTION OF ISOPRENE AND FROM ABOUT 1.5 TO ABOUT 20 MOLECULAR PROPORTIONS OF H2O IN THE PRESENCE OF A SOLID ACID-ACTING CATALYST AT A TEMPERATURE OF FROM ABOUT 150* TO ABOUT 500* C.
Claim 2
Dependent Claim
43 words
A PROCESS FOR PRODUCING ISOVALERALDEHYDE WHICH COMPRISES REACTING ONE MOLECULAR PROPORTION OF ISOPRENE AND FROM ABOUT 1.5 TO ABOUT 20 MOLECULAR PROPORTIONS OF H2O IN THE PRESENCE OF A SOLID ACID-ACTING CATALYST AT A TEMPERATURE OF FROM ABOUT 150* TO ABOUT 500* C.
References Cited (Backward Citations)
US2060086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |