US2807539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for refining titanium
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1952-04-07
•
Granted: 1957-09-24
•
Expires: 1972-04-07
Abstract
No abstract record available.
Inventors
- 👤 Quin James Paterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR THE PURIFICATION OF TITANIUM IN MASSIVE FORM CONTAINING OXYGEN WHICH COMPRISES TREATING THE TITANIUM AT A TEMPERATURE OF AT LEAST 900*C. WITH CALCIUM DISSOLVED IN A LIQUID MEDIUM SELECTED FROM THE GROUP CONSISTING OF MOLTEN STRONTIUM, BARIUM, MAGNESIUM, ALKALI METALS, ALKALI METAL HALIDES AND ALKALINE EARTH METAL HALIDES, THE AMOUNT OF CALCIUM UTILIZED BEING IN EXCESS OF THAT CHEMICALLY EQUIVALENT TO THE OXYGEN PRESENT IN SAID TITANIUM, REMOVING THE SAID TITANIUM FROM SAID CALCIUM-CONTAINING LIQUID MEDIUM AND THEN REMOVING ADHERING MATERIAL FROM THE SURFACES OF THE TITANIUM.
Claim 2
Dependent Claim
90 words
A PROCESS FOR THE PURIFICATION OF TITANIUM IN MASSIVE FORM CONTAINING OXYGEN WHICH COMPRISES TREATING THE TITANIUM AT A TEMPERATURE OF AT LEAST 900*C. WITH CALCIUM DISSOLVED IN A LIQUID MEDIUM SELECTED FROM THE GROUP CONSISTING OF MOLTEN STRONTIUM, BARIUM, MAGNESIUM, ALKALI METALS, ALKALI METAL HALIDES AND ALKALINE EARTH METAL HALIDES, THE AMOUNT OF CALCIUM UTILIZED BEING IN EXCESS OF THAT CHEMICALLY EQUIVALENT TO THE OXYGEN PRESENT IN SAID TITANIUM, REMOVING THE SAID TITANIUM FROM SAID CALCIUM-CONTAINING LIQUID MEDIUM AND THEN REMOVING ADHERING MATERIAL FROM THE SURFACES OF THE TITANIUM.
References Cited (Backward Citations)
GB190413759A
Cited
US2148345A
Cited
US2205854A
Cited
US2287771A
Cited
US2427338A
Cited
US2546320A
Cited
US2607674A
Cited
US2707679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |