D21C11/0035 - CPC Classification Index

ClassID:

126431 ⎘

D21C11/0035 - CPC Classification

Classification description:

Regeneration of pulp liquors or effluent waste waters Introduction of compounds, e.g. sodium sulfate, into the cycle in order to compensate for the losses of pulping agents

Recent Application in this class:

20240328083

2024-10-03

Method for preparing fluff pulp from bamboos and fluff pulp prepared thereby

20220324894

2022-10-13

PROCESSES FOR EXTRACTING LIGNIN FROM BLACK LIQUOR

20220204377

2022-06-30

METHOD FOR RECOVERING WATER AND CHEMICALS FROM PLANTS FOR TREATING EFFLUENTS FROM PULP AND PAPER FACTORIES

20210095421

2021-04-01

Multi-step process for the isolation of components from

20200181841

2020-06-11

Method of treating fly ash of a recovery boiler

20180298554

2018-10-18

PROCESS FOR LIGNIN PURIFICATION AND ISOLATION

20170159238

2017-06-08

Method for utilizing lignin separated from black liquor as lime-kiln fuel

20160298295

2016-10-13

PROCESS FOR LIGNIN PURIFICATION AND ISOLATION

20160002853

2016-01-07

Method for recovering chemicals and by-products from high-sulphidity pulping liquors

#10

20110067829

2011-03-24

Maintenance of sulfur concentration in Kraft pulp processes

#11

20100325947

2010-12-30

Method for separating lignin from black liquor, a lignin product, and use of a lignin product for the production of fuels or materials