Patent US3784385A successfully refreshed from Google Patents.
US3784385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing mix for producing refractory gas concrete and the product obtained thereby
Assignee: Individual
•
Filing: 1972-02-18
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Granted: 1974-01-08
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Expires: 1992-02-18
Abstract
Abstract Method of preparing a mix for producing refractory gas concrete containing powdered chrome-alumina slag and a high-alumina refractory material as fillers, comprising the mixing of constituents followed by adding a gas-developing agent. The resulting concrete is also subject of the invention.
Inventors
- 👤 T Oblast
- 👤 A Denisenko
- 👤 A Bljusin
- 👤 T Avdeeva
- 👤 V Elin
- 👤 P Roizman
- 👤 K Nekrasov
- 👤 A Tarasova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:16
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/101; C04B35/105; C04B18/00; C04B18/04; C04B18/14; C04B18/141; C04B18/144; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
16 words
The refractory gas concrete as defined in claim 1, wherein said binder further includes nepheline slurry.
Claim 2
Dependent Claim
16 words
The refractory gas concrete as defined in claim 1, wherein said binder further includes ferrochrome slag.
Claim 3
Independent Claim
70 words
A method of preparing a mix for producing refractory gas concrete, comprising the steps of: mixing with water a finely ground binder, including sodium silicate, a finely ground filler consisting of powdered chrome-alumina slag, and a high-alumina refractory material prepared from wastes of broken high-alumina articles containing at least 62 percent aluminum oxide; and subsequently adding a gas-developing agent selected from the group consisting of sodium hydroxide and aluminum powder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |