US3738863A
Expired / Lapsed
US
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Inorganic refractory liquid composition
Assignee: Toshiba Corp
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Filing: 1971-07-09
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Granted: 1973-06-12
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Expires: 1991-07-09
Abstract
Abstract THE PRESENT INVENTION PROVIDES (I) INORGANIC REFRACTORY LIQUID COMPOSITIONS COMPRISING A METAL NITRIDE AND POTASSIUM SALTS OF PHOSPHORIC ACID AS MAIN CONSTITUENTS, AND (II) A METHOD OF FORMING A PHOSPHATE OF SAID METAL BY THE REACTION OF SAID COMPOSITIONS AT TEMPERATURES BELOW 150*C.
Inventors
- 👤 S Sugaike
- 👤 M Watanabe
- 👤 T Kubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:01
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/66; C04B35/622; C04B35/626; C04B35/63; C04B35/6303; C04B35/6306; C04B35/6313; C23; C23C; C23C24/00; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/00525; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/38
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |