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US4288342A
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Inorganic water-softening bead
Assignee: JM Huber Corp
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Filing: 1979-06-21
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Granted: 1981-09-08
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Expires: 1999-06-21
Abstract
Abstract An inorganic water-softening bead is disclosed having a density of from 36 to 46 lbs/cu ft consisting of at least 66% of sodium alumino silicate on an anhydrous basis; from 1 to 20% of sodium silicate; from 1 to 20% of a solubilizing agent, such as sodium sulfate; and the remainder being water. The sodium alumino silicate has a silica to aluminum oxide ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide ratio of between 0.8:1 and 1:1. The sodium silicate has a silica to sodium oxide ratio of between 1:1 and 3.3:1.
Inventors
- 👤 Joseph E. Wagner, III
- 👤 Lloyd E. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:59
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/083; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/08; C11D3/12; C11D3/124; C11D3/1246; C11D3/128
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
A spray dried inorganic water-softening bead consisting of: (a) at least 66% by weight of sodium aluminosilicate on an anhydrous basis having a silica to aluminum oxide ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide ratio of between 0.8:1 and 1.2:1; (b) from 1 to 20% by weight of sodium silicate with a silica to sodium oxide ratio of between 1:1 and 3.3:1; (c) from 1 to 20% by weight of a solubilizing agent selected from the group consisting of soluble sodium phosphates, sodium carbonates, sodium bicarbonates, sodium tetraborates and sodium sulfate; and (d) the remainder being water.
Claim 2
Dependent Claim
103 words
A spray dried inorganic water-softening bead consisting of: (a) at least 66% by weight of sodium aluminosilicate on an anhydrous basis having a silica to aluminum oxide ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide ratio of between 0.8:1 and 1.2:1; (b) from 1 to 20% by weight of sodium silicate with a silica to sodium oxide ratio of between 1:1 and 3.3:1; (c) from 1 to 20% by weight of a solubilizing agent selected from the group consisting of soluble sodium phosphates, sodium carbonates, sodium bicarbonates, sodium tetraborates and sodium sulfate; and (d) the remainder being water.
Claim 3
Dependent Claim
22 words
An inorganic water-softening bead according to claim 1 wherein said sodium silicate has a silica to sodium oxide ratio of about 2.5:1.
Claim 4
Dependent Claim
15 words
An inorganic water-softening bead according to claim 1 wherein said solubilizing agent is sodium sulfate.
Claim 5
Dependent Claim
82 words
A spray dried inorganic water-softening bead consisting of: (a) at least 66% by weight of sodium aluminosilicate on an anhydrous basis having a silica to aluminum oxide ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide ratio of between 0.8:1 and 1.2:1; (b) from 1 to 20% by weight of sodium silicate with a silica to sodium oxide ratio of about 2.5:1; (c) from 1 to 20% by weight of sodium sulfate; and (d) the remainder being water.
Claim 6
Dependent Claim
82 words
A spray dried inorganic water-softening bead consisting of: (a) at least 66% by weight of sodium aluminosilicate on an anhydrous basis having a silica to aluminum oxide ratio of between 2:1 and 4:1 and a sodium oxide to aluminum oxide ratio of between 0.8:1 and 1.2:1; (b) from 1 to 20% by weight of sodium silicate with a silica to sodium oxide ratio of about 2.5:1; (c) from 1 to 20% by weight of sodium sulfate; and (d) the remainder being water.
Claim 7
Dependent Claim
25 words
An inorganic water-softening bead according to claim 4 wherein said inorganic water-softening bead has a density of between 36 and 46 pounds per cubic feet.
Claim 8
Dependent Claim
25 words
An inorganic water-softening bead according to claim 4 wherein said inorganic water-softening bead has a density of between 40 and 42 pounds per cubic feet.
Claim 9
Dependent Claim
24 words
An inorganic water-softening bead according to claim 4 wherein said sodium aluminosilicate has a silica to aluminum oxide ratio of between 2:1 and 3:1.
Claim 10
Dependent Claim
16 words
An inorganic water-softening bead according to claim 4 wherein said sodium silicate is a sodium polysilicate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |