Patent US3235512A successfully refreshed from Google Patents.
US3235512A
Expired / Lapsed
US
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High temperature-resistant catalyst carrier and method of preparation thereof
Assignee: Kali Chemie AG
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Filing: 1962-02-27
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Granted: 1966-02-15
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Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Karl-Hermann Koepernick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:00
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J21/00; B01J21/16; B01J23/42; B01D2255/00; B01D2255/10; B01D2255/102; B01D2255/1021; B01D2255/1023; B01D2255/20; B01D2255/204; B01D2255/2047; B01D2255/207; B01D2255/20746; B01D2255/20753; B01D2255/209; B01D2255/2092; B01J21/06; B01J21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A HIGH TEMPERATURE-RESISTANT SHAPED CATALYST CARRIER OF HIGH MECHANICAL STRENGTH, SAID CARRIER CONSISTING OF A CALCINED SHAPED CARRIER BODY COMPOSED OF 14 PARTS BY WEIGHT TO 93 PARTS BY WEIGHT OF CALCINED CHEMICALLY UNTREATED CLAY AND 86 PARTS BY WEIGHT TO 7 PARTS BY WEIGHT OF ALUMINUM OXIDE, SAID SHAPED CATALYST CARRIER BODIES BEING CALCINED AT A TEMPERATURE BETWEEN ABOUT 900*C. AND ABOUT 1400*C. AND HAVING A SPECIFIC SURFACE AREA BETWEEN ABOUT 1 SQ. M./G. AND ABOUT 100 SQ. M./G. AND A PORE DIAMETER BETWEEN ABOUT 300 ANGSTROM UNITS AND ABOUT 3000 ANGSTROM UNITS.
Claim 2
Dependent Claim
94 words
A HIGH TEMPERATURE-RESISTANT SHAPED CATALYST CARRIER OF HIGH MECHANICAL STRENGTH, SAID CARRIER CONSISTING OF A CALCINED SHAPED CARRIER BODY COMPOSED OF 14 PARTS BY WEIGHT TO 93 PARTS BY WEIGHT OF CALCINED CHEMICALLY UNTREATED CLAY AND 86 PARTS BY WEIGHT TO 7 PARTS BY WEIGHT OF ALUMINUM OXIDE, SAID SHAPED CATALYST CARRIER BODIES BEING CALCINED AT A TEMPERATURE BETWEEN ABOUT 900*C. AND ABOUT 1400*C. AND HAVING A SPECIFIC SURFACE AREA BETWEEN ABOUT 1 SQ. M./G. AND ABOUT 100 SQ. M./G. AND A PORE DIAMETER BETWEEN ABOUT 300 ANGSTROM UNITS AND ABOUT 3000 ANGSTROM UNITS.
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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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |