US3709723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic refractory liquid composition
Assignee: Toshiba Corp
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Filing: 1970-09-29
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Granted: 1973-01-09
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Expires: 1990-09-29
Abstract
Abstract The present invention provides a process for preparing (i) inorganic refractory liquid compositions comprising a metal nitride and phosphoric acid or ammonium 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 after applying said inorganic compositions to a prescribed material.
Inventors
- 👤 R Watanabe
- 👤 M Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:13
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5076; C04B41/5092; C04B28/00; C04B28/34; C04B41/009; C04B41/80; C04B41/81; C04B41/85
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
10 words
The method of claim 1 wherein said solvent is water.
Claim 2
Dependent Claim
11 words
The method of claim 1 wherein said solvent is ethyl alcohol.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein said liquid composition additionally contains an inorganic filler.
Claim 4
Dependent Claim
25 words
The method of claim 4 wherein said inorganic filler is selected from the group consisting of silica, alumina, mica, asbestos, silicon carbide and metallic powder.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein said composition contains an ammonium phosphate and said inorganic refractory coating is a porous coating.
Claim 6
Dependent Claim
12 words
The method of claim 6 wherein said composition contains a foaming agent.
Claim 7
Independent Claim
115 words
A method of forming inorganic refractories which comprises: A. providing a liquid composition containing (1) a nitride selected from the group consisting of aluminum nitride, boron nitride, titanium nitride, iron nitride, thallium nitride and zirconium nitride, (2) a phosphate containing material selected from the group consisting of phosphoric acid and ammonium phosphates, (3) a solvent and (4) an additive selected from at least one of the group consisting of ferric oxide, silica, alumina, mica, asbestos, silicon carbide and metallic powder, B. applying said liquid composition to the surface of a substrate, and thereafter C. reacting said composition at a temperature between about room temperature and 150*C. to obtain an inorganic refractory coating upon said substrate.
Claim 8
Independent Claim
118 words
A method of forming inorganic refractories which comprises: A. providing a liquid composition containing (1) a nitride selected from the group consisting of aluminum nitride, boron nitride, titanium nitride, iron nitride, thallium nitride and zirconium nitride, (2) a phosphate containing material selected from the group consisting of phosphoric acid, monoammonium phosphate, diammonium phosphate and triammonium phosphate, (3) a solvent and (4) an additive selected from at least one of the group consisting of ferric oxide, silica, alumina, mica, asbestos, silicon carbide and metallic powder. B. casting said liquid composition upon a metal plate and thereafter C. reacting said composition at a temperature between about room temperature and 150*C. to obtain an inorganic refractory coating upon said metal plate.
Claim 9
Independent Claim
109 words
A method of forming a refractory layer upon an inorganic substrate which comprises: A. providing a liquid composition containing (1) a nitride selected from the group consisting of aluminum nitride, boron nitride, titanium nitride, iron nitride, thallium nitride, and zirconium nitride, (2) a phosphate containing material selected from the group consisting of phosphoric acid and ammonium phosphates and (3) solvent, B. applying a layer of said liquid composition to a substrate formed of inorganic material selected from the group consisting of metal, glass and asbestos, and thereafter C. reacting said compositions at a temperature between about room temperature and 150*C. to obtain an inorganic refractory layer upon said substrate.
References Cited (Backward Citations)
US2476345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |