US4488971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for even division of substances and mixtures of substances in the course of manufacture of pulverulent preparations by chemical reaction
Assignee: Individual
•
Filing: 1982-08-12
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Granted: 1984-12-18
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Expires: 2002-08-12
Abstract
Abstract A method for forming a uniform distribution of a substance in calcium hydroxide to obtain pulverulent preparations. The substances are those particularly in a fluid stage such as a solvent, emulsion or suspension.
Inventors
- 👤 Friedrich Bolsing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:47
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/12; B; B01; B01J; B01J37/00; B01J7/00; B01J7/02; C; C01; C01B; C01B17/00; C01B17/42; C01B17/43; C02; C02F; C02F1/00; C02F1/52; C02F1/529; C02F11/00; C02F11/12; C05; C05D; C05D3/00; C05D3/02; C05F; C05F3/00; C05F7/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/15
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
168 words
A method for forming a uniform distribution of a substance in calcium hydroxide comprising: mechanically mixing a substance which is in the presence of water with calcium oxide which is a compound capable of reacting with water to form calcium hydroxide having a surface area greater than the surface area of said calcium oxide, said mechanical mixing homogenizing said calcium oxide, water and said substance such that said substance is homogeneously distributed within said calcium oxide prior to the observation of the temperature increase associated with the exothermic reaction between calcium oxide and water, and said mechanical mixing substantially homogeneously distributes said substance within said calcium oxide at a rate faster than the rate of reaction between water and calcium oxide; said mixing step being performed in the absence of compounds which delay the reaction between said calcium oxide and water to provide said calcium hydroxide; and upon reaction between said calcium oxide and water, a dust-dry substantially uniform distribution of said substance in calcium hydroxide is provided.
Claim 2
Independent Claim
168 words
A method for forming a uniform distribution of a substance in calcium hydroxide comprising: mechanically mixing a substance which is in the presence of water with calcium oxide which is a compound capable of reacting with water to form calcium hydroxide having a surface area greater than the surface area of said calcium oxide, said mechanical mixing homogenizing said calcium oxide, water and said substance such that said substance is homogeneously distributed within said calcium oxide prior to the observation of the temperature increase associated with the exothermic reaction between calcium oxide and water, and said mechanical mixing substantially homogeneously distributes said substance within said calcium oxide at a rate faster than the rate of reaction between water and calcium oxide; said mixing step being performed in the absence of compounds which delay the reaction between said calcium oxide and water to provide said calcium hydroxide; and upon reaction between said calcium oxide and water, a dust-dry substantially uniform distribution of said substance in calcium hydroxide is provided.
Claim 3
Dependent Claim
20 words
The method according to claim 1 wherein said mixing means is a thin film mixer or a gravity tube mixer.
Claim 4
Dependent Claim
13 words
The method according to claim 1 wherein said substance is a waste material.
Claim 5
Dependent Claim
13 words
The method according to claim 1 wherein said substance is flowers of sulphur.
Claim 6
Dependent Claim
11 words
The method according to claim 1 wherein said substance comprises pitch.
Claim 7
Dependent Claim
12 words
The method according to claim 3 wherein said substance comprises acid sludge.
Claim 8
Dependent Claim
11 words
The method according to claim 1 wherein said substance comprises bitumen.
Claim 9
Dependent Claim
14 words
The method according to claim 1 wherein said substance comprises oil charged Fuller's earth.
Claim 10
Dependent Claim
11 words
The method according to claim 3 wherein said substance is manure.
Claim 11
Dependent Claim
17 words
The method according to claim 3 wherein said substance in the presence of water comprises sewage sludge.
References Cited (Backward Citations)
US3897238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |