US3385794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of fluorination catalysts
Assignee: Hoechst AG
•
Filing: 1964-06-26
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Granted: 1968-05-28
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Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Scherer Otto
- 👤 Korinth Jurgen
- 👤 Rammelt Peter Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:05
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/28; B01J27/32; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J23/90; B01J23/92; B01J27/06; B01J37/00; B01J37/22; B01J27/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
IN A PROCESS OF IMPROVING A CHROMIUM OXYFLUORIDE CATALYST THE STEP OF ACTIVATING OR STABILIZING SAID CATALYST BY PASSING CHLORINE OVER SAID CATALYST AT A TEMPERATURE FROM 100*C TO 500*C.
Claim 2
Dependent Claim
30 words
IN A PROCESS OF IMPROVING A CHROMIUM OXYFLUORIDE CATALYST THE STEP OF ACTIVATING OR STABILIZING SAID CATALYST BY PASSING CHLORINE OVER SAID CATALYST AT A TEMPERATURE FROM 100*C TO 500*C.
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Cited
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US2926131A
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US2892000A
Cited
US3147229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |