US2886461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anhydrous crystalline borate and process for producing same
Assignee: US Borax Inc
•
Filing: 1955-05-23
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Granted: 1959-05-12
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Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Donald S Taylor
- 👤 Nelson P Nies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:28
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; C01B35/06; C01B35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE PROCESS FOR PRODUCING A SOLID, ANHYDROUS, PREDOMINANTLY CRYSTALLINE SODIUM BORATE COMPOSITION IN WHICH THE B203 CONTENT EXCEEDS 80% BY WEIGHT AND WHICH IS APPRECIABLY LESS HYGROSCOPIC THAN ANHYDROUS 1,2-BORATE, SAID PROCESS COMPRISING THE STEPS OF MIXING TOGETHER SOLID SODIUM 1,2-BORATE AND SOLID SODIUM 1,5BORATE IN A RATIO BETWEEN ABOUT 1.3 AND ABOUT 1.9 MOLS SODIUM 1,5-BORATE PER MOL SODIUM 1,2-BORATE TO FORM A MIXTURE HAVING AN OVERALL MOLAR RATIO OF B2O3/NA2O LESS THAN 4.0 AND GREATER THAN ABOUT 3.7, SAID SODIUM BORATES CONTAINING WATER OF HYDRATION, CALCINING AT LEAST ONE OF SAID SODIUM BORATES AT A TEMPERATURE BETWEEN ABOUT 150 AND ABOUT 600* F. TO EVAPORATE WATER OF HY-
Claim 2
Dependent Claim
110 words
THE PROCESS FOR PRODUCING A SOLID, ANHYDROUS, PREDOMINANTLY CRYSTALLINE SODIUM BORATE COMPOSITION IN WHICH THE B203 CONTENT EXCEEDS 80% BY WEIGHT AND WHICH IS APPRECIABLY LESS HYGROSCOPIC THAN ANHYDROUS 1,2-BORATE, SAID PROCESS COMPRISING THE STEPS OF MIXING TOGETHER SOLID SODIUM 1,2-BORATE AND SOLID SODIUM 1,5BORATE IN A RATIO BETWEEN ABOUT 1.3 AND ABOUT 1.9 MOLS SODIUM 1,5-BORATE PER MOL SODIUM 1,2-BORATE TO FORM A MIXTURE HAVING AN OVERALL MOLAR RATIO OF B2O3/NA2O LESS THAN 4.0 AND GREATER THAN ABOUT 3.7, SAID SODIUM BORATES CONTAINING WATER OF HYDRATION, CALCINING AT LEAST ONE OF SAID SODIUM BORATES AT A TEMPERATURE BETWEEN ABOUT 150 AND ABOUT 600* F. TO EVAPORATE WATER OF HY-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |