US2945797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of metals of high purity
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1957-05-09
•
Granted: 1960-07-19
•
Expires: 1977-05-09
Abstract
No abstract record available.
Inventors
- 👤 Cherrier Claude Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:48
CPC Classifications
H; H01; H01J; H01J65/00; H01J65/04; H01J65/042; H01J65/048; C; C01; C01B; C01B33/00; C01B33/02; C01B33/021; C01B33/027; C01B33/029; C22; C22B; C22B41/00; H01J37/00; H01J37/32; H01J37/32009; H01J37/32082; H01J37/321; H01J37/32174; H01J2237/00; H01J2237/32; H01J2237/33; H01J2237/338
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF PRODUCING ELEMENTARY METALS AND METALLOIDS IN A STATE OF HIGH PURITY WHICH COMPRISES FLOWING THROUGH AN INERT REACTION ZONE, WHICH IS PROTECTED FROM CONTACT WITH CONTAMINATING SUBSTANCES BY AN INERT WALL, A CONTINUOUS CURRENT OF A HYDRIDE OF AN ELEMENT
Claim 2
Independent Claim
43 words
THE METHOD OF PRODUCING ELEMENTARY METALS AND METALLOIDS IN A STATE OF HIGH PURITY WHICH COMPRISES FLOWING THROUGH AN INERT REACTION ZONE, WHICH IS PROTECTED FROM CONTACT WITH CONTAMINATING SUBSTANCES BY AN INERT WALL, A CONTINUOUS CURRENT OF A HYDRIDE OF AN ELEMENT
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Cited
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Cited
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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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |