Patent US2925357A successfully refreshed from Google Patents.
US2925357A
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US
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Siliconized inert base materials
Assignee: Union Carbide Corp
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Filing: 1954-11-08
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Granted: 1960-02-16
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Expires: 1974-11-08
Abstract
No abstract record available.
Inventors
- 👤 Charles W Kothen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:07
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/80; C04B41/81; C04B41/85; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN ABRASION RESISTANT, OXIDATION IMPERVIOUS ARTICLE COMPOSED OF A BASE MATERIAL, INERT TO SILICON AT TEMPERATURES UP TO ABOUT 1150*C., AND A SURFACE COATING OF SUBSTANTIALLY PURE SILICON, SAID COATING BEING OF A THICKNESS OF BETWEEN 0.0015 INCH AND 0.0044 INCH.
Claim 2
Dependent Claim
41 words
AN ABRASION RESISTANT, OXIDATION IMPERVIOUS ARTICLE COMPOSED OF A BASE MATERIAL, INERT TO SILICON AT TEMPERATURES UP TO ABOUT 1150*C., AND A SURFACE COATING OF SUBSTANTIALLY PURE SILICON, SAID COATING BEING OF A THICKNESS OF BETWEEN 0.0015 INCH AND 0.0044 INCH.
References Cited (Backward Citations)
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US2689807A
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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) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |