D21C   1/00  \	0	0	4L055	D21C   1/00	225	κٳͽʸλģã	Pretreatment of the finely-divided materials before digesting (of waste paper D21C 5/02)
D21C   1/02  \	1	1	4L055	D21C   1/02	39	ޤϿˤ	with water or steam
D21C   1/04  \	1	1	4L055	D21C   1/04	16	ʪˤ	with acid reacting compounds
D21C   1/06  \	1	1	4L055	D21C   1/06	42	륫ʪˤ	with alkaline reacting compounds
D21C   1/08  \	1	1	4L055	D21C   1/08	9	ȯʪˤ	with oxygen-generating compounds
D21C   1/10  \	1	1	4L055	D21C   1/10	10	Ʃ¥ʤ뤿ʪŪˡ	Physical methods for facilitating impregnation
D21C   3/00  \	0	0	4L055	D21C   3/00	39	ͭΥѥײ	Pulping cellulose-containing materials
D21C   3/00  A	0	0	4L055	D21C   3/00	123	Υź	Addition of quinones
D21C   3/00  Z	0	0	4L055	D21C   3/00	572	¾	Others
D21C   3/02  \	1	1	4L055	D21C   3/02	505	̵ޤϥ륫ʪˤΡ㡥βˡ	with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
D21C   3/04  \	1	1	4L055	D21C   3/04	292	ޤϻ̵ʪˤ	with acids, acid salts, or acid anhydrides
D21C   3/06  \	2	2	4L055	D21C   3/06	18	ββŰβˤ	sulfur dioxide; sulfurous acid; bisulfites
D21C   3/08  \	3	3	4L055	D21C   3/08	0	Űβ륷ˤ	calcium bisulfite
D21C   3/10  \	3	3	4L055	D21C   3/10	0	Űβޥͥˤ	magnesium bisulfite
D21C   3/12  \	3	3	4L055	D21C   3/12	3	Űβʥȥꥦˤ	sodium bisulfite
D21C   3/14  \	3	3	4L055	D21C   3/14	0	Űβ˥ˤ	ammonium bisulfite
D21C   3/16  \	2	2	4L055	D21C   3/16	8	ǡ˻ˤ	nitrogen oxides; nitric acid
D21C   3/18  \	1	1	4L055	D21C   3/18	111	ϥޤϥϥȯʪˤΡʥѥפɺģã	with halogens or halogen-generating compounds (bleaching cellulose pulp D21C 9/12)
D21C   3/20  \	1	1	4L055	D21C   3/20	36	ͭϺޤˤ	with organic solvents
D21C   3/22  \	1	1	4L055	D21C   3/22	502	ѥײˡΤ¾ħ	Other features of pulping processes
D21C   3/24  \	2	2	4L055	D21C   3/24	42	Ϣ³ˡ	Continuous processes
D21C   3/26  \	2	2	4L055	D21C   3/26	20	¿ˡ	Multi-stage processes
D21C   3/28  \	2	2	4L055	D21C   3/28	16	ȯˢ	Prevention of foam
D21C   5/00  \	0	0	4L055	D21C   5/00	98	뤿Τ¾ˡ㡥ʥ󥿤ξ	Other processes for obtaining cellulose, e.g. cooking cotton linters
D21C   5/02  \	1	1	4L055	D21C   5/02	1837	λ椫ΥѥפκʸŻ椫ΥѥפκΤεŪʹģ£ģ£	Working-up waste paper (mechanical processes for working-up waste paper D21B 1/08, D21B 1/32)
D21C   7/00  \	0	0	4L055	D21C   7/00	259		Digesters
D21C   7/02  \	1	1	4L055	D21C   7/02	25	ž	Rotary digesters
D21C   7/04  \	1	1	4L055	D21C   7/04	16	饤˥	Linings
D21C   7/06  \	1	1	4L055	D21C   7/06	111		Feeding devices
D21C   7/08  \	1	1	4L055	D21C   7/08	47	ӽ	Discharge devices
D21C   7/10  \	1	1	4L055	D21C   7/10	30	Ǯ	Heating devices
D21C   7/12  \	1	1	4L055	D21C   7/12	77	ĴѤޤ	Devices for regulating or controlling
D21C   7/14  \	1	1	4L055	D21C   7/14	99	դν۴	Means for circulating the lye
D21C   7/16  \	1	1	4L055	D21C   7/16	2		Safety devices
D21C   9/00  \	0	0	4L055	D21C   9/00	403	ѥס㡥ںѥסޤʥ󥿡θ	After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
D21C   9/02  \	1	1	4L055	D21C   9/02	356		Washing
D21C   9/04  \	2	2	4L055	D21C   9/04	15	ǥե塼ˤ	in diffusers
D21C   9/06  \	2	2	4L055	D21C   9/06	66	ե륿ˤ	in filters
D21C   9/08  \	1	1	4L055	D21C   9/08	309	顤顤ԥåޤϥåν	Removal of fats, resins, pitch, or waxes
D21C   9/10  \	1	1	4L055	D21C   9/10	68	ɺ	Bleaching
D21C   9/10  A	1	0	4L055	D21C   9/10	365	¿ɺ	Multi-step bleaching
D21C   9/10  Z	1	0	4L055	D21C   9/10	563	¾	Others
D21C   9/12  \	2	2	4L055	D21C   9/12	119	ϥޤϴޥϥ󲽹ʪˤɺʣģãͥˡΣ	with halogens or halogen-containing compounds (D21C 9/16 takes precedence) [4]
D21C   9/14  \	3	3	4L055	D21C   9/14	133	ãϢޤϰǻˤɺ	with ClO<sub>2</sub> or chlorites
D21C   9/147  \	2	2	4L055	D21C   9/147	300	ǤޤϤƱΤˤɺʣģãͥˡΣ	with oxygen or its allotropic modifications (D21C 9/16 takes precedence) [4]
D21C   9/153  \	3	3	4L055	D21C   9/153	194	ˤɺΣ	with ozone [4]
D21C   9/16  \	2	2	4L055	D21C   9/16	406	ʪˤɺ	with per compounds
D21C   9/18  \	1	1	4L055	D21C   9/18	350	æ	De-watering
D21C  11/00  \	0	0	4L055	D21C  11/00	43	ѥײդκ	Regeneration of pulp liquors
D21C  11/00  A	0	0	4L055	D21C  11/00	149	ѱǳƤ˴Ϣ	Treatment related to combustion of liquid waste
D21C  11/00  B	0	1	4L055	D21C  11/00	51	ѱǳνħ	Characterized by treatment before combustion of liquid waste
D21C  11/00  C	0	1	4L055	D21C  11/00	229	ѱǳưʹߤνħ㡥ݥܥ	Characterized by treatment after combustion of liquid waste, e.g. soda recovery boiler
D21C  11/00  Z	0	0	4L055	D21C  11/00	332	¾	Others
D21C  11/02  \	1	1	4L055	D21C  11/02	1	βˡѱդκ	of sulfite lye
D21C  11/02  A	1	0	4L055	D21C  11/02	34	ѱǳƤ˴Ϣ	Treatment related to combustion of liquid waste
D21C  11/02  B	1	1	4L055	D21C  11/02	14	ѱǳνħ	Characterized by treatment before combustion of liquid waste
D21C  11/02  C	1	1	4L055	D21C  11/02	61	ѱǳưʹߤνħ㡥бդβ	Characterized by treatments after combustion of liquid waste, e.g. caustic treatments of  green liquor
D21C  11/02  Z	1	0	4L055	D21C  11/02	71	¾	Others
D21C  11/04  \	1	1	4L055	D21C  11/04	28	륫ˡѱդκ	of alkali lye
D21C  11/04  A	1	0	4L055	D21C  11/04	67	ѱǳƤ˴Ϣ	Treatment related to combustion of liquid waste
D21C  11/04  B	1	1	4L055	D21C  11/04	49	ѱǳνħ	Characterized by treatment before combustion of liquid waste
D21C  11/04  C	1	1	4L055	D21C  11/04	196	ѱǳưʹߤνħ㡥ǥӥ󥰥󥯡饤ޥĥɤβ	Characterized by treatment after combustion of liquid waste, e.g. recovery of dissolving tank, lime mud
D21C  11/04  Z	1	0	4L055	D21C  11/04	115	¾	Others
D21C  11/06  \	1	1	4L055	D21C  11/06	194	ѥײκݤ륬νǮ	Treatment of pulp gases; Recovery of the heat content of the gases
D21C  11/08  \	2	2	4L055	D21C  11/08	25	æ	Deodorisation
D21C  11/10  \	1	1	4L055	D21C  11/10	139	ȯˤѱդǻ	Concentrating spent liquor by evaporation
D21C  11/12  \	1	1	4L055	D21C  11/12	555	ѥѱդǳ	Combustion of pulp liquors
D21C  11/14  \	2	2	4L055	D21C  11/14	18	ǳ	Wet combustion
