Patent US1590071A successfully refreshed from Google Patents.
Patent US2905547A successfully refreshed from Google Patents.
US2905547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenating titanium metal powder
Assignee: Titanium Metals Corp
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Filing: 1955-03-28
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Granted: 1959-09-22
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Expires: 1975-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jack A Yoblin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:36
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD FOR DEHYDROGENATING PREVIOUSLY HYDROGENATED TITANIUM METAL POWDER WHICH COMPRISES (A) HEATING SAID POWDER IN AN ENCLOSED CONTAINER UNTIL SAID POWDER HAS ATTAINED A TEMPERATURE OF ABOUT 400*C. MEANWHILE EVACUATING SAID CONTAINER, (B) CONTAINUING TO HEAT SAID POWDER IN SAID CONTAINER UNDER AN ATMOSPHERE OF HYDROGEN EVOLVED FROM SAID POWDER AT A PRESSURE OF NOT LESS THAN 500 MM. OF MERCURY ABSOLUTE UNTIL THE TEMPERATURE OF SAID POWDER HAS REACHED BETWEEN 650*C. AND 750*C. AND SAID POWDER FORMS A SOFT SEMI-SINTERED CAKE, AND (C) CONTINUING TO HEAT SAID SOFT SEMI-SINTERED CAKE IN SAID CONTAINER TO MAINTAIN A TEMPERATURE THEREOF BETWEEN ABOUT 450*C. AND ABOUT 750*C. MEANWHILE EVACUATING SAID CONTAINER UNTIL THE HYDROGEN IS SUBSTANTIALLY COMPLETELY REMOVED FROM SAID POWDER.
Claim 2
Independent Claim
120 words
A METHOD FOR DEHYDROGENATING PREVIOUSLY HYDROGENATED TITANIUM METAL POWDER WHICH COMPRISES (A) HEATING SAID POWDER IN AN ENCLOSED CONTAINER UNTIL SAID POWDER HAS ATTAINED A TEMPERATURE OF ABOUT 400*C. MEANWHILE EVACUATING SAID CONTAINER, (B) CONTAINUING TO HEAT SAID POWDER IN SAID CONTAINER UNDER AN ATMOSPHERE OF HYDROGEN EVOLVED FROM SAID POWDER AT A PRESSURE OF NOT LESS THAN 500 MM. OF MERCURY ABSOLUTE UNTIL THE TEMPERATURE OF SAID POWDER HAS REACHED BETWEEN 650*C. AND 750*C. AND SAID POWDER FORMS A SOFT SEMI-SINTERED CAKE, AND (C) CONTINUING TO HEAT SAID SOFT SEMI-SINTERED CAKE IN SAID CONTAINER TO MAINTAIN A TEMPERATURE THEREOF BETWEEN ABOUT 450*C. AND ABOUT 750*C. MEANWHILE EVACUATING SAID CONTAINER UNTIL THE HYDROGEN IS SUBSTANTIALLY COMPLETELY REMOVED FROM SAID POWDER.
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |