US3186791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of water free borates
Assignee: Evonik Operations GmbH
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Filing: 1962-10-22
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Granted: 1965-06-01
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Expires: 1982-10-22
Abstract
No abstract record available.
Inventors
- 👤 Kloepfer Harry
- 👤 Knorre Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:24
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/08; C01B35/10; C01B35/06; C01B35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR THE PRODUCTION OF A WATER FREE BORATE COMPOSITION SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL BORATES IN WHICH THE MOLAR RATIO OF ALKALI METAL MONOXIDE TO BORON TRIOXIDE IS GREATER THAN 1:2 AND MIXED ALKALI METAL ALKALINE EARTH METAL BORATES IN WHICH THE MOLAR RATIO OF ALKALI METAL MONOXIDE + ALKALINE EARTH METAL OXIDE TO BORONTRIOXIDE IS GREATER THAN 1:2 WHICH COMPRISES HEATING AT LEAST ONE WATER FREE REACTANT OXIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL MONOXIDES AND ALKALINE EARTH METAL MONOXIDE IN ADMIXTURE WITH WATER FREE SODIUM TETRABORATE UNTIL REACTION INITIATES BETWEEN ALL OXIDE REACTANTS AND THE SODIUM TETRABORATE, THE QUANTITY OF THE OXIDE REACTANT BEING BETWEEN 1 AND 5 MOL INCLUSIVE PER MOL OF SODIUM TETRABORATE.
Claim 2
Dependent Claim
124 words
A PROCESS FOR THE PRODUCTION OF A WATER FREE BORATE COMPOSITION SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL BORATES IN WHICH THE MOLAR RATIO OF ALKALI METAL MONOXIDE TO BORON TRIOXIDE IS GREATER THAN 1:2 AND MIXED ALKALI METAL ALKALINE EARTH METAL BORATES IN WHICH THE MOLAR RATIO OF ALKALI METAL MONOXIDE + ALKALINE EARTH METAL OXIDE TO BORONTRIOXIDE IS GREATER THAN 1:2 WHICH COMPRISES HEATING AT LEAST ONE WATER FREE REACTANT OXIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL MONOXIDES AND ALKALINE EARTH METAL MONOXIDE IN ADMIXTURE WITH WATER FREE SODIUM TETRABORATE UNTIL REACTION INITIATES BETWEEN ALL OXIDE REACTANTS AND THE SODIUM TETRABORATE, THE QUANTITY OF THE OXIDE REACTANT BEING BETWEEN 1 AND 5 MOL INCLUSIVE PER MOL OF SODIUM TETRABORATE.
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |