US3250728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon conversion catalyst and method of preparation thereof
Assignee: ExxonMobil Oil Corp
•
Filing: 1962-07-16
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Granted: 1966-05-10
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Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Miale
- 👤 Paul B Weisz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/064; B01J29/068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD FOR PREPARING A CATALYTIC COMPOSITION WHICH CONSISTS ESSENTIALLY OF BASE-EXCHANGING A CRYSTALLINE ALKALI METAL ALUMINOSILICATE CHARACTERIZED BY A UNIFORM PORE STRUCTURE MADE UP OF PORES OF BETWEEN ABOUT 3 AND ABOUT 15 ANGSTROM UNITS IN DIAMETER WITH A SOLUTION OF AMMOUNIUM SULFIDE, SAID BASE EXCHANGE BEING CHARACTERIZED IN THAT IT IS CONDUCTED EXCLUSIVELY WITH AMMONIUM SULFIDE TO EFFECT REPLACEMENT OF AT LEAST ABOUT 75 PERCENT OF THE ALKALI METAL CATIONS OF SAID ALUMINOSILICATE WITH AMMONIUM IONS AND SUBJECTING THE RESULTING PRODUCT TO AN ELEVATED TEMPERATURE TO RELEASE AMMONIA AND TO YIELD A RESULTING HYDROGEN ALUMINOXILICATE.
Claim 2
Independent Claim
97 words
A METHOD FOR PREPARING A CATALYTIC COMPOSITION WHICH CONSISTS ESSENTIALLY OF BASE-EXCHANGING A CRYSTALLINE ALKALI METAL ALUMINOSILICATE CHARACTERIZED BY A UNIFORM PORE STRUCTURE MADE UP OF PORES OF BETWEEN ABOUT 3 AND ABOUT 15 ANGSTROM UNITS IN DIAMETER WITH A SOLUTION OF AMMOUNIUM SULFIDE, SAID BASE EXCHANGE BEING CHARACTERIZED IN THAT IT IS CONDUCTED EXCLUSIVELY WITH AMMONIUM SULFIDE TO EFFECT REPLACEMENT OF AT LEAST ABOUT 75 PERCENT OF THE ALKALI METAL CATIONS OF SAID ALUMINOSILICATE WITH AMMONIUM IONS AND SUBJECTING THE RESULTING PRODUCT TO AN ELEVATED TEMPERATURE TO RELEASE AMMONIA AND TO YIELD A RESULTING HYDROGEN ALUMINOXILICATE.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |