US2906632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation resistant articles
Assignee: Union Carbide Corp
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Filing: 1957-09-10
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Granted: 1959-09-29
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Expires: 1977-09-10
Abstract
No abstract record available.
Inventors
- 👤 John D Nickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:00
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/522; B; B01; B01J; B01J19/00; B01J19/02; C04B33/00; C04B33/02; C04B33/13; C04B33/1315; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5076; C04B41/5092; C04B41/80; C04B41/81; C04B41/85; B01J2219/00; B01J2219/02; B01J2219/025; B01J2219/0272
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
AN OXIDATION-RESISTANT ARTICLE CONSISTING OF A CARBONACEOUS MATRIX SELECTED FROM THE GROUP CONSISTING OF GRAPHITE AND CARBON, AND HAVING THEREIN FROM ABOUT 4 PERCENT TO ABOUT 20 PERCENT BY WEIGHT OF A COMPOSITION CONSISTING ESSENTIALLY OF PHOSPHORUS-CONTAINING AGENT SELECTED FROM THE GROUP CONSISTING OF THE OXY ACIDS OF PHOSPHORUS AND THE AMMONIUM SALTS OF PHOSPHORUS, TOGETHER WITH A ZINC HALIDE AND A BORIC ACID, THE WEIGHT RATIOOS OF SAID MATERIALS RANGEING BETWEEN 2:1:0 AND 2:2:0:25.
References Cited (Backward Citations)
US2685541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |