US2980731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for contacting solid and liquid phases
Assignee: Usines de Melle SA
•
Filing: 1958-03-10
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Granted: 1961-04-18
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Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Alheritiere Louis
- 👤 Mercier Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10; B01J8/00; B01J8/18; B01J8/20; C; C07; C07C; C07C51/00; C07C51/09; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/29; C11D17/00; C11D17/0043; C13; C13K; C13K3/00; B01J2219/00; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1946
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR CARRYING OUT A LIQUID PHASE REACTION IN THE PRESENCE OF A SOLID CATALYST, WHICH COMPRISES PROVIDING A CONE SHAPED BED OF SOLID CATALYST IN AN INVERTED CONICAL ZONE, FEEDING A LIQUID REACTANT AT A TEMPERATURE SUFFICIENT TO PRODUCE GAS IN SAID BED, AT THE INVERTED APEX OF THE CONICAL ZONE BENEATH THE CATALYST BED AND PASSING IT THROUGH THE BED AT A LINEAR SPEED GREATER THAN THE
Claim 2
Dependent Claim
70 words
A PROCESS FOR CARRYING OUT A LIQUID PHASE REACTION IN THE PRESENCE OF A SOLID CATALYST, WHICH COMPRISES PROVIDING A CONE SHAPED BED OF SOLID CATALYST IN AN INVERTED CONICAL ZONE, FEEDING A LIQUID REACTANT AT A TEMPERATURE SUFFICIENT TO PRODUCE GAS IN SAID BED, AT THE INVERTED APEX OF THE CONICAL ZONE BENEATH THE CATALYST BED AND PASSING IT THROUGH THE BED AT A LINEAR SPEED GREATER THAN THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |