US2998310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amorphous sodium borate composition
Assignee: US Borax Inc
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Filing: 1958-01-24
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Granted: 1961-08-29
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Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Patrick J O'brien
- 👤 George A Connell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:53
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; C01B35/06; C01B35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A WATER-SOLUBLE AMORPHOUS SODIUM BORATE HAVING FROM ABOUT 10 TO ABOUT 20% BY WEIGHT OF WATER OF HYDRATION, CONSISTING ESSENTIALLY OF SODIUM AND BORON OXIDES PRESENT IN A MOLAR RATIO OF NA2O:B2O3 OF FROM ABOUT 0.15 TO ABOUT 0.3, WHICH YIELDS AQUEOUS SOLUTIONS SUPERSATURATED WITH NA2O AND B2O3 VALUES WITH A POSITIVE HEAT OF SOLUTION, SAID AMORPHOUS SODIUM BORATE PRODUCED BY DISSOLVING IN WATER AT LEAST TWO MATERIALS SELECTED FROM THE GROUP CONSISTING OF SODIUM METABORATE, SODIUM TETRABORATE, SODIUM PENTABORATE AND BORIC ACID, SAID MATERIALS PRESENT IN SUCH PROPORTIONS AS TO YIELD SAID MOLAR RATIO, AND RAPIDLY EVAPORATING THE WATER FROM THE SOLUTION.
Claim 2
Dependent Claim
103 words
A WATER-SOLUBLE AMORPHOUS SODIUM BORATE HAVING FROM ABOUT 10 TO ABOUT 20% BY WEIGHT OF WATER OF HYDRATION, CONSISTING ESSENTIALLY OF SODIUM AND BORON OXIDES PRESENT IN A MOLAR RATIO OF NA2O:B2O3 OF FROM ABOUT 0.15 TO ABOUT 0.3, WHICH YIELDS AQUEOUS SOLUTIONS SUPERSATURATED WITH NA2O AND B2O3 VALUES WITH A POSITIVE HEAT OF SOLUTION, SAID AMORPHOUS SODIUM BORATE PRODUCED BY DISSOLVING IN WATER AT LEAST TWO MATERIALS SELECTED FROM THE GROUP CONSISTING OF SODIUM METABORATE, SODIUM TETRABORATE, SODIUM PENTABORATE AND BORIC ACID, SAID MATERIALS PRESENT IN SUCH PROPORTIONS AS TO YIELD SAID MOLAR RATIO, AND RAPIDLY EVAPORATING THE WATER FROM THE SOLUTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |