US2673139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of aluminum fluoride catalyst
Assignee: Honeywell International Inc
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Filing: 1951-08-03
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Granted: 1954-03-23
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Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 Woolf Cyril
- 👤 Charles B Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:02
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE PROCESS OF PRODUCING AN ALUMINUM FLUORIDE CATALYST WHICH COMPRISES MAINTAINING A ZONE CONTAINING ANHYDROUS ALUMINUM CHLORIDE INTRODUCING INTO SAID ZONE A SUBSTANTIALLY ANHYDROUS GASEOUS STREAM COMPRISING FLUORINATING AGENT OF THE GROUP CONSISTING OF HYDROGEN FLUORIDE AND BORON FLUORIDE, AND CONTACTING SAID STREAM WITH SAID ALUMINUM CHLORIDE, MAINTAINING EFFECTTIVE REACTION TEMPERATURE IN SAID ZONE AT A MAXIMUM IN THE APPROXIMATE RANGE 80 TO 125* C., AND CONTINUING INTRODUCTION OF SAID GAS STREAM AND CONTACT THEREOF WITH SAID ALUMINUM CHLORIDE FOR TIME SUFFICIENT AND IN THE PRESENCE OF SUFFICIENT GASEOUS FLUORINATING AGENT TO CONVERT A SUBSTANTIAL PROPORTION OF SAID ALUMINUM CHLORIDE TO ALUMINUM FLUORIDE AND TO FORM A CATALYST HAVING CRYSTALLITE SIZE NOT SUBSTANTIALLY GREATER THAN ABOUT 500 ANGSTROM UNITS RADIUS.
Claim 2
Dependent Claim
120 words
THE PROCESS OF PRODUCING AN ALUMINUM FLUORIDE CATALYST WHICH COMPRISES MAINTAINING A ZONE CONTAINING ANHYDROUS ALUMINUM CHLORIDE INTRODUCING INTO SAID ZONE A SUBSTANTIALLY ANHYDROUS GASEOUS STREAM COMPRISING FLUORINATING AGENT OF THE GROUP CONSISTING OF HYDROGEN FLUORIDE AND BORON FLUORIDE, AND CONTACTING SAID STREAM WITH SAID ALUMINUM CHLORIDE, MAINTAINING EFFECTTIVE REACTION TEMPERATURE IN SAID ZONE AT A MAXIMUM IN THE APPROXIMATE RANGE 80 TO 125* C., AND CONTINUING INTRODUCTION OF SAID GAS STREAM AND CONTACT THEREOF WITH SAID ALUMINUM CHLORIDE FOR TIME SUFFICIENT AND IN THE PRESENCE OF SUFFICIENT GASEOUS FLUORINATING AGENT TO CONVERT A SUBSTANTIAL PROPORTION OF SAID ALUMINUM CHLORIDE TO ALUMINUM FLUORIDE AND TO FORM A CATALYST HAVING CRYSTALLITE SIZE NOT SUBSTANTIALLY GREATER THAN ABOUT 500 ANGSTROM UNITS RADIUS.
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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |