Descriptions for C30B and notes/indexes are displayed on this screen.
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SINGLE-CRYSTAL GROWTH (by using ultra-high pressure, e.g. for the formation of diamonds, B01J 3/06); UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL (zone-refining of metals or alloys C22B); PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE (casting of metals, casting of other substances by the same processes or devices B22D; working of plastics B29; modifying the physical structure of metals or alloys C21D, C22F); SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE (for producing semiconductor devices or parts thereof H01L, H10); APPARATUS THEREFOR[3]
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Note(s)
In this subclass, the following expressions are used with the meaning indicated:[3,5,2012.01]"single crystal" includes also twin crystals and a predominantly single crystal product;"homogeneous polycrystalline material" means a material with crystal particles, all of which have the same chemical composition;"defined structure" means the structure of a material with grains which are oriented in a preferential way or have larger dimensions than normally obtained. In this subclass:the preparation of single crystals or a homogeneous polycrystalline material with defined structure of particular materials or shapes is classified in the group for the process as well as in group C30B 29/00;an apparatus specially adapted for a specific process is classified in the appropriate group for the process. Apparatus to be used in more than one kind of process is classified in group C30B 35/00.
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Subclass indexes
SINGLE-CRYSTAL GROWTH | from solids or gels | 1/00, 3/00, 5/00 | from liquids | 7/00-21/00, 27/00 | from vapours | 23/00, 25/00 | PRODUCTION OF SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE | 28/00, 30/00 | SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE | 29/00 | AFTER-TREATMENT | 31/00, 33/00 | APPARATUS | 35/00 |
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