US3011980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activated bauxite and catalyst containing same
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1959-02-03
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Granted: 1961-12-05
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Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 Bell Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:00
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J20/00; B01J20/02; B01J20/06; B01J20/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
ACTIVATED BAUXITE IN THE FORM OF SUBSTANTIALLY SPHERICAL NODULES PREPARED BY A PROCESS COMPRISING HEATING AND GRINDING BAUXITE ORE TO A LOW FREE-WATER CONTENT AND TO A NARROW RANGE OF RELATIVELY FINE PARTICLE SIZES, FLAME CALCINING SAID GROUND PARTICLES OF BAUXITE TO A LOW DEGREE OF LOSS ON IGNITION, NODULIZING SAID CALCINED PARTICLES WITH WATER FORM SUBSTANTIALLY SPHERICAL NODULES, CURING SAID NODULES BY AGING FOR A SUFFICIENT PERIOD OF TIME TO ALLOW REHYDRATION TO TAKE PLACE, AND HEAT ACTIVATING SAID CURED NODULES.
Claim 2
Dependent Claim
82 words
ACTIVATED BAUXITE IN THE FORM OF SUBSTANTIALLY SPHERICAL NODULES PREPARED BY A PROCESS COMPRISING HEATING AND GRINDING BAUXITE ORE TO A LOW FREE-WATER CONTENT AND TO A NARROW RANGE OF RELATIVELY FINE PARTICLE SIZES, FLAME CALCINING SAID GROUND PARTICLES OF BAUXITE TO A LOW DEGREE OF LOSS ON IGNITION, NODULIZING SAID CALCINED PARTICLES WITH WATER FORM SUBSTANTIALLY SPHERICAL NODULES, CURING SAID NODULES BY AGING FOR A SUFFICIENT PERIOD OF TIME TO ALLOW REHYDRATION TO TAKE PLACE, AND HEAT ACTIVATING SAID CURED NODULES.
Claim 3
Dependent Claim
90 words
A CATALYST COMPOSITION COMPRISING A CATALYTICALLY ACTIVE MATERIAL SUPPORTED ON SUBSTANTIALLY SPHERICAL NODULES OF ACTIVATED BAUXITE, SAID NODULES PREPARED BY A PROCESS COMPRISING HEATING AND GRINDING BAUXITE ORE TO A LOW FREE-WATER CONTENT AND TO A NARROW RANGE OF RELATIVELY FINE PARTICLE SIZES, FLAME CALCINING SAID GROUND PARTICLES TO A LOW DEGREE OF LOSS ON IGNITION, NODULIZING SAID CALCINED PARTICLES WITH WATER TO FORM SUBSTANTIALLY SPHERICAL NODULES, CURING SAID NODULES BY AGING FOR A SUFFICIENT PERIOD OF TIME TO ALLOW REHYDRATION TO TAKE PLACE, AND HEAT ACTIVATING SAID CURED NODULES.
Claim 4
Dependent Claim
90 words
A CATALYST COMPOSITION COMPRISING A CATALYTICALLY ACTIVE MATERIAL SUPPORTED ON SUBSTANTIALLY SPHERICAL NODULES OF ACTIVATED BAUXITE, SAID NODULES PREPARED BY A PROCESS COMPRISING HEATING AND GRINDING BAUXITE ORE TO A LOW FREE-WATER CONTENT AND TO A NARROW RANGE OF RELATIVELY FINE PARTICLE SIZES, FLAME CALCINING SAID GROUND PARTICLES TO A LOW DEGREE OF LOSS ON IGNITION, NODULIZING SAID CALCINED PARTICLES WITH WATER TO FORM SUBSTANTIALLY SPHERICAL NODULES, CURING SAID NODULES BY AGING FOR A SUFFICIENT PERIOD OF TIME TO ALLOW REHYDRATION TO TAKE PLACE, AND HEAT ACTIVATING SAID CURED NODULES.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |