US4802990A
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US
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Solution and method for dissolving minerals
Assignee: EUGENE L INSKEEP
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Filing: 1987-07-30
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Granted: 1989-02-07
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Expires: 2007-07-30
Abstract
Abstract A method of dissolving mineral salts comprising contacting the mineral salts with a solution of water, an additive consisting essentially of six moles of 1-hydroxyethane, 1, 1-diphosphonic acid mixed with one mole of hydroxymethylene phosphonic acid, phosphonoformic acid, sulfamic acid, oxalic acid, hydroxyacetic acid, 2-amino ethane sulfonic acid, or fluoroboric acid and neutralized to a pH of 7.0, and a polymeric dispersant.
Inventors
- 👤 Eugene L. Inskeep, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:22
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/14; C02F5/145; C23; C23G; C23G1/00; C23G1/24
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
58 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of hydroxy methylene phosphonic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 2
Independent Claim
58 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of hydroxy methylene phosphonic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 3
Independent Claim
57 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of phosphono formic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 4
Independent Claim
57 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of phosphono formic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 5
Independent Claim
56 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of oxalic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 6
Independent Claim
56 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of oxalic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 7
Independent Claim
56 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of sulfamic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 8
Independent Claim
56 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of sulfamic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 9
Independent Claim
57 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of hydroxy acetic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 10
Independent Claim
57 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of hydroxy acetic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 11
Independent Claim
58 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of 2-amino ethane sulfonic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 12
Independent Claim
58 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of 2-amino ethane sulfonic acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 13
Independent Claim
57 words
A method of dissolving mineral in salt water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of fluoro boric acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 14
Independent Claim
57 words
A method of dissolving mineral in salt water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane 1, 1-diphosphonic acid mixed with one mole per liter of fluoro boric acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia.
Claim 15
Independent Claim
76 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane, 1, 1-diphosphonic acid mixed with one mole per liter of hydroxymethylene phosphonic acid, phosphonoformic acid, sulfamic acid, oxalic acid, hydroxyacetic acid, 2-amino ethane sulfonic acid, or fluoroboric acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia, and a polymeric dispersant.
Claim 16
Independent Claim
76 words
A method of dissolving mineral salts in water systems comprising contacting the mineral salts with an effective amount of a solution consisting essentially of water and six moles per liter of 1-hydroxyethane, 1, 1-diphosphonic acid mixed with one mole per liter of hydroxymethylene phosphonic acid, phosphonoformic acid, sulfamic acid, oxalic acid, hydroxyacetic acid, 2-amino ethane sulfonic acid, or fluoroboric acid and neutralized to a pH of 7.0 with potassium hydroxide or ammonia, and a polymeric dispersant.
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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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |