Patent US2362331A successfully refreshed from Google Patents.
US3228751A
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Methods for chlorination of refractory materials
Assignee: Metal Chlorides Corp
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Filing: 1962-02-23
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Granted: 1966-01-11
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Expires: 1982-02-23
Abstract
No abstract record available.
Inventors
- 👤 Meherwan C Irani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:51
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/08; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; C01; C01G; C01G1/00; C01G1/06; F; F27; F27B; F27B15/00; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00327; B01J2208/00336; B01J2208/0038; B01J2208/00389; B01J2208/00398; B01J2208/00477; B01J2208/00495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF CHLORINATING REFRACTORY METAL ORES COMPRISING THE STEPS OF SUSPENDING THE ORE TO BE CHLORINATED WITH FINELY DIVIDED CARBON IN A STREAM OF CHLORINE GAS AND PASSING THE RESULTING SUSPENDED MIXTURE THROUGH A GRAPHITE TUBE HEATED TO A TEMPERATURE SUFFICIENT TO CAUSE THE CHLORINE TO REACT WITH THE CARBON AND THE ORE IN THE CHLORINE STREAM AT A VELOCITY SUFFICIENT TO MAINTIN SUBSTAN-
Claim 2
Independent Claim
65 words
A METHOD OF CHLORINATING REFRACTORY METAL ORES COMPRISING THE STEPS OF SUSPENDING THE ORE TO BE CHLORINATED WITH FINELY DIVIDED CARBON IN A STREAM OF CHLORINE GAS AND PASSING THE RESULTING SUSPENDED MIXTURE THROUGH A GRAPHITE TUBE HEATED TO A TEMPERATURE SUFFICIENT TO CAUSE THE CHLORINE TO REACT WITH THE CARBON AND THE ORE IN THE CHLORINE STREAM AT A VELOCITY SUFFICIENT TO MAINTIN SUBSTAN-
References Cited (Backward Citations)
US1867672A
Cited
US2020431A
Cited
US2479496A
Cited
US2580635A
Cited
US2586818A
Cited
US2591595A
Cited
US2788260A
Cited
US2755325A
Cited
US2915367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |