US2504497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts suitable for dehydrogenation processes
Assignee: NORMANDE DE PROD CHIM SOC
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Filing: 1948-09-20
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Granted: 1950-04-18
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Expires: 1968-09-20
Abstract
No abstract record available.
Inventors
- 👤 Charles Ernest
- 👤 Robinet Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/04; B; B01; B01J; B01J25/00; C07C67/00; C07C67/39; C07C67/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A CATALYST SUITABLE FOR THE DEHYDROGENATION OF ALCOHOLS WHICH COMPRISES A CAVERNOUS SKELETON CATALYTIC MASS CONSISTING ESSENTIALLY OF SEPARATE AND HOLLOW PIECES OF WHICH THE SMALLER DIMENSIONS ARE AT LEAST 6 MM., FORMED OF AN ALUMINIUM-COPPER ALLOY AND THE SURFACE OF WHICH IS POROUS AND CONSISTS LARGELY OF ACTIVE COPPER.
Claim 2
Dependent Claim
50 words
A CATALYST SUITABLE FOR THE DEHYDROGENATION OF ALCOHOLS WHICH COMPRISES A CAVERNOUS SKELETON CATALYTIC MASS CONSISTING ESSENTIALLY OF SEPARATE AND HOLLOW PIECES OF WHICH THE SMALLER DIMENSIONS ARE AT LEAST 6 MM., FORMED OF AN ALUMINIUM-COPPER ALLOY AND THE SURFACE OF WHICH IS POROUS AND CONSISTS LARGELY OF ACTIVE COPPER.
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) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |