C01D5/04 - CPC Classification Index

ClassID:

85526 ⎘

C01D5/04 - CPC Classification

Classification description:

Sulfates or sulfites of sodium, potassium or alkali metals in general Preparation of sulfates with the aid of sulfurous acid or sulfites, e.g. Hargreaves process

Recent Application in this class:

20200071176

2020-03-05

Method for producing potassium sulfate from potassium chloride and sulfuric acid

20190144294

2019-05-16

Method of producing high-purity lithium carbonate and barium sulfate from discarded lithium secondary batteries

20190106718

2019-04-11

Lignocellulosic conversion process comprising sulfur dioxide and/or sulfurous acid pretreatment

20180029896

2018-02-01

Process for treating lignocellulosic feedstock comprising wet oxidation

20130089478

2013-04-11

PROCESS TO OBTAIN POTASSIUM SULFATE FROM VINASSE

20120329096

2012-12-27

Recovery of inorganic salt during processing of lignocellulosic feedstocks

20100003733

2010-01-07

Recovery of inorganic salt during processing of lignocellulosic feedstocks

20050244934

2005-11-03

Recovery of inorganic salt during processing of lignocellulosic feedstocks