US3770466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulating shaped compositions
Assignee: Foseco International Ltd
•
Filing: 1972-01-24
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Granted: 1973-11-06
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Expires: 1992-01-24
Abstract
Abstract Heat insulating compositions useful as slabs, riser sleeves, and the like are disclosed which consist essentially of a refractory fibrous material such as synthetic mineral wool, a binder, and a crushed coke or fly ash filler. The compositions can be used in the casting of copper based alloys or iron where the fibers themselves are not suitable.
Inventors
- 👤 J Wilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:04
CPC Classifications
C; C04; C04B; C04B28/00; C04B26/00; C04B26/02; C04B28/001; C04B28/24; C04B35/00; C04B35/515; C04B35/52; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S106/00; Y10S106/01
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
12 words
The composition of claim 1 wherein the refractory filler is crushed coke.
Claim 2
Dependent Claim
14 words
The composition of claim 1 wherein the refractory fiber is slag or rock wool.
Claim 3
Dependent Claim
12 words
The composition of claim 3 wherein the refractory filler is crushed coke.
Claim 4
Dependent Claim
12 words
The composition of claim 1 wherein the refractory filler is fly ash.
Claim 5
Dependent Claim
12 words
The composition of claim 3 wherein the refractory filler is fly ash.
Claim 6
Dependent Claim
25 words
The composition of claim 1 wherein the binder is selected from phenol formaldehyde, clay, starch, wheat flour, phosphate modified starches, colloidal silica, and urea formaldehyde.
Claim 7
Dependent Claim
25 words
The composition of claim 4 wherein the binder is selected from phenol formaldehyde, clay, starch, wheat flour, phosphate modified starches, colloidal silica, and urea formaldehyde.
Claim 8
Dependent Claim
25 words
The composition of claim 6 wherein the binder is selected from phenol formaldehyde, clay, starch, wheat flour, phosphate modified starches, colloidal silica, and urea formaldehyde.
References Cited (Backward Citations)
US2516342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |