Patent US3337474A successfully refreshed from Google Patents.
US3337474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making cracking catalyst containing a crystalline aluminosilicate
Assignee: Air Products and Chemicals Inc
•
Filing: 1964-02-20
•
Granted: 1967-08-22
•
Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 Edward B Cornelius
- 👤 James E Mcevoy
- 👤 Mills George Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:49
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF MAKING CRACKING CATALYST PARTICLES WHICH CONSISTS OF: MIXING FROM 4 TO 19 PARTS BY WEIGHT CLAY CONTAINING LESS THAN 0.5% IRON WITH ONE PART OF AN AMMONIUM ZELITIC MOLECULAR SIEVE MATERIAL SUBSTANTIALLY FREE OF EXCHANGEABLE METAL CATIONS AND HAVING A SILICON ATOM TO ALUMINUM ATOM UNIT RATIO WITHIN THE RANGE FROM 1.5 TO 8 AND AN AVERAGE PORT DIAMETER WITHIN THE RANGE FROM 10 ANGSTROMS TO 18 ANGSTROMS; FORMING SUCH MIXTURE INTO RUGGED PARTICLES CONTAINING PRECURSORS CORRESPONDING AFTER CALCINATION TO 80-95% POROUS CLAY CARRIER AND 5-20% HYDROGEN ZEOLITE TYPE OF COMPONET DERIVED FROM THE ZEOLITIC MOLECULAR SIEVE; AND SUBJECTING SAID PARTICLES TO AN ATMOSPHERE CONTAINING FROM 10% TO 100% STEAM AT A TEMPERATURE WITHIN THE RANGE FROM 700*C. TO 750*C. FOR A PERIOD FROM 2 TO 6 HOURS.
Claim 2
Independent Claim
131 words
THE METHOD OF MAKING CRACKING CATALYST PARTICLES WHICH CONSISTS OF: MIXING FROM 4 TO 19 PARTS BY WEIGHT CLAY CONTAINING LESS THAN 0.5% IRON WITH ONE PART OF AN AMMONIUM ZELITIC MOLECULAR SIEVE MATERIAL SUBSTANTIALLY FREE OF EXCHANGEABLE METAL CATIONS AND HAVING A SILICON ATOM TO ALUMINUM ATOM UNIT RATIO WITHIN THE RANGE FROM 1.5 TO 8 AND AN AVERAGE PORT DIAMETER WITHIN THE RANGE FROM 10 ANGSTROMS TO 18 ANGSTROMS; FORMING SUCH MIXTURE INTO RUGGED PARTICLES CONTAINING PRECURSORS CORRESPONDING AFTER CALCINATION TO 80-95% POROUS CLAY CARRIER AND 5-20% HYDROGEN ZEOLITE TYPE OF COMPONET DERIVED FROM THE ZEOLITIC MOLECULAR SIEVE; AND SUBJECTING SAID PARTICLES TO AN ATMOSPHERE CONTAINING FROM 10% TO 100% STEAM AT A TEMPERATURE WITHIN THE RANGE FROM 700*C. TO 750*C. FOR A PERIOD FROM 2 TO 6 HOURS.
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |