US4374743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing snow and ice control compositions
Assignee: Individual
•
Filing: 1980-11-03
•
Granted: 1983-02-22
•
Expires: 2000-11-03
Abstract
Abstract A method of preparing a snow and ice control composition to improve traction on ice and snow covered surfaces. The composition comprises coal ash, binder, a melting depressant and enough water to form a dough-like mixture with said mixture pelletized by extrusion through a die and cured to form particles ranging in size from 1/16 th to 11/2 inches. The resulting said pellets have excellent strength and can be formulated to be environmentally acceptable.
Inventors
- 👤 Richard F. Stockel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:14
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185; C09K3/14; C09K3/149; Y; Y10; Y10S; Y10S106/00; Y10S106/01; Y10S264/00; Y10S264/49
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
A method of preparing a snow and ice control composition comprising the steps of combining a coal ash material, a salt and/or organic material for lowering the melting point of snow or ice, a silicate finding agent having a silica/alkali metal oxide ratio of 3.50 to 2.00 and enough water to form a dough-like workable mixture; pelletizing said mixture and heating said pellets to form shaped particles having excellent crush resistance.
Claim 2
Independent Claim
71 words
A method of preparing a snow and ice control composition comprising the steps of combining a coal ash material, a salt and/or organic material for lowering the melting point of snow or ice, a silicate finding agent having a silica/alkali metal oxide ratio of 3.50 to 2.00 and enough water to form a dough-like workable mixture; pelletizing said mixture and heating said pellets to form shaped particles having excellent crush resistance.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein said pelletized snow and ice control particle is heated at a temperature of 100° C. or above to cause polymerization of said silicate binder.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the coal ash material is fly ash.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein the coal ash material is bottom ash.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein the coal ash material is boiler slag.
Claim 7
Dependent Claim
40 words
The method of claim 1 wherein the binding agent is sodium or potassium silicate with a silica/alkali metal oxide ratio from 3.50 to 2.00, containing from 15%-35% by weight of the silicate based on the weight of the coal ash.
References Cited (Backward Citations)
GB475820A
Cited
US2308289A
Cited
US2410910A
Cited
US2626219A
Cited
US2946112A
Cited
US2948948A
Cited
DE1459694A1
Cited
DE2107558A1
Cited
DE2148505A1
Cited
US3977892A
Cited
FR2288717A1
Cited
DE2512691A1
Cited
DE2517618A1
Cited
US4092109A
Cited
US4108669A
Cited
US4235836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |