Purification of elemental boron
First Claim
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1. THE METHOD OF REMOVING IMPURITIES FROM ELEMENTAL BORON, SAID METHOD COMPRISING FORMING A BODY OF ELEMENTAL BORON, SAID BODY SUBSTANTIALLY ENCLOSING A CAVITY AND HAVING AN INNER SURFACE, ARRANGING AN ELECTRICAL RESISTANCE ELEMENT WITHIN THE CAVITY OF SAID BODY, SURROUNDING SAID BODY BY AN EVACUABLE ENCLOSURE, REMOVING ATMOSPHERIC GASES FROM THE ENCLOSURE, AND SUPPLYING RADIANT HEAT TO THE INNER SURFACE OF THE BODY BY MEANS OF SAID RESISTANCE ELEMENT, IN QUANTITY SUFFICIENT TO HEAT THE ELEMENTAL BORON ADJACENT THE INNER SURFACE APPROXIMATELY TO FUSING TEMPERATURE.
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1 Claim
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1. THE METHOD OF REMOVING IMPURITIES FROM ELEMENTAL BORON, SAID METHOD COMPRISING FORMING A BODY OF ELEMENTAL BORON, SAID BODY SUBSTANTIALLY ENCLOSING A CAVITY AND HAVING AN INNER SURFACE, ARRANGING AN ELECTRICAL RESISTANCE ELEMENT WITHIN THE CAVITY OF SAID BODY, SURROUNDING SAID BODY BY AN EVACUABLE ENCLOSURE, REMOVING ATMOSPHERIC GASES FROM THE ENCLOSURE, AND SUPPLYING RADIANT HEAT TO THE INNER SURFACE OF THE BODY BY MEANS OF SAID RESISTANCE ELEMENT, IN QUANTITY SUFFICIENT TO HEAT THE ELEMENTAL BORON ADJACENT THE INNER SURFACE APPROXIMATELY TO FUSING TEMPERATURE.
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Current AssigneeJohn Yannacakis, Joseph Schulein
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Original AssigneeJohn Yannacakis, Joseph Schulein
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InventorsJOSEPH SCHULEIN, JOHN YANNACAKIS
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Application NumberUS03/699,977Time in Patent Office1,282 DaysField of SearchUS Class Current23/295.00RCPC Class CodesC01B 35/023 Boron
