D21C9/1052 - CPC Classification Index

ClassID:

126404 ⎘

D21C9/1052 - CPC Classification

Classification description:

After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere; Bleaching ; Apparatus therefor; Other features in bleaching processes Controlling the process

Recent Application in this class:

20250122668

METHOD FOR DISTRUBTING CHEMICALS IN DELIGNIFICTION STAGES OF PULP BLEACHING PROCESS

20240044080

UPCYCLED CELLULOSIC FIBERS

20220251781

PROCESS TO OPTIMIZE BROWN STOCK WASHING UNIT OPERATIONS

20220081833

PREPARATION OF CELLULOSE FIBERS

20180163344

Method for reducing pulp viscosity in production of dissolving pulp

20180119346

Method of making bleached microcrystalline cellulose

20170096774

Measurement apparatus and method

20090025893

Method for determining the total peroxide content of pulp suspension

20070158040

Method and apparatus for estimating an optimal dosage of bleaching agent to be used in a process for producing pulp

20060196622

Method for determining chemical pulp kappa number with visible-near infrared spectrometry

20050034824

System and method for controlling a processor including a digester utilizing time-based assessments