US3153635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kaolin cracking catalysts having improved oxidizing characteristics
Assignee: Air Products and Chemicals Inc
•
Filing: 1959-10-26
•
Granted: 1964-10-20
•
Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Jr George R Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:57
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
AN ACTIVE CONTACT MASS CHARACTERIZED IN IMPROVED COMBUSTION PROMOTING CHARACTERISTICS, SAID MASS COMPRISING 99.45 TO 94.5% BY WEIGHT OF ACTIVATED KAOLIN CLAY 0.3 TO 2.5% BY WEIGHT OF THE OXIDES OF THE METALS OF ATOMIC NUMBER 57 THROUGH 60, AND A BORON EQUIVALENT OF 0.25 TO 3% BY WEIGHT OF BORON OXIDE.
References Cited (Backward Citations)
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US2339248A
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US2339302A
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US2988518A
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US2949429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |