ClassID:

84687

C01B21/0687 - CPC Classification

Classification description:

Nitrogen; Compounds thereof; Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with silicon After-treatment, e.g. grinding, purification

Recent Application in this class:
#1
20260028226
2026-01-29

PROCESS FOR PRODUCING SILICON NITRIDE POWDER

#2
20250362261
2025-11-27

REVERSIBLE FUNCTIONALIZATION OF NANOPORES USING AN ADHESION LAYER

#3
20250282688
2025-09-11

SILICON NITRIDE POWDER AND METHOD FOR PRODUCING SAME, AND SILICON NITRIDE SINTERED BODY AND METHOD FOR PRODUCING SAME

#4
20240140798
2024-05-02

METHOD FOR PREPARING SILICON NITRIDE POWDER FOR MANUFACTURING SUBSTRATE AND SILICON NITRIDE POWDER PREPARED THEREBY

#5
20230140491
2023-05-04

SILICON NITRIDE POWDER FOR SINTERING

#6
20200399125
2020-12-24

PROCESS FOR PRODUCING SILICON NITRIDE POWDER

#7
20180327265
2018-11-15

Surface-modified inorganic substance, method for manufacturing same, resin composition, thermally conductive material, and device

#8
20170246611
2017-08-31

Method of manufacturing a plurality of through-holes in a layer of first material

#9
20150056121
2015-02-26

Silicon nitride powder production method, silicon nitride powder, silicon nitride sintered body and circuit substrate using same

#10
20150034245
2015-02-05

SUBSTRATE TREATMENT APPARATUS

#11
20140158858
2014-06-12

Polycrystalline silicon ingot casting mold and method for producing same, and silicon nitride powder for mold release material for polycrystalline silicon ingot casting mold and slurry containing same

#12
20130264460
2013-10-10

Polycrystalline silicon ingot casting mold and method for producing same, and silicon nitride powder for mold release material for polycrystalline silicon ingot casting mold and slurry containing same

#13
20120187083
2012-07-26

Substrate treatment method and substrate treatment apparatus

#14
20120141349
2012-06-07

Method for producing high-purity silicon nitride

#15
20120107611
2012-05-03

Process and device for the preparation of hollow microspheres comprising centrifugal atomization

#16
20110045223
2011-02-24

Method for exfoliation of hexagonal boron nitride

#17
20100213822
2010-08-26

PHOSPHOR AND PRODUCTION METHOD THEREOF, CRYSTALLINE SILICON NITRIDE AND PRODUCTION METHOD THEREOF, PHOSPHOR-CONTAINING COMPOSITION, AND LIGHT EMITTING DEVICE, DISPLAY AND ILLUMINATING DEVICE USING THE PHOSPHOR

#18
20050094381
2005-05-05

Silicon nitride powder, silicon nitride sintered body, sintered silicon nitride substrate, and circuit board and thermoelectric module comprising such sintered silicon nitride substrate

#19
20050013760
2005-01-20

High-pressure phase silicon nitride having a cubic spinel structure and the manufacturing method