ClassID:

85748

C01F11/468 - CPC Classification

Classification description:

Compounds of calcium, strontium, or barium; Sulfates Purification of calcium sulfates

Recent Application in this class:
#1
20260008014
2026-01-08

METHOD AND SYSTEM FOR EXTRACTION OF MINERALS BASED ON DIVALENT CATIONS FROM BRINE

#2
20260001773
2026-01-01

METHOD FOR MANUFACTURING SODIUM BICARBONATE AND GYPSUM USING SODIUM SULFATE

#3
20250304475
2025-10-02

SUSTAINABLE HYBRID COMPOSITE MADE FROM BIODEGRADABLE POLYMER REINFORCED WITH EXTRACTED POWDER COMPOUND FROM REJECT BRINE (EPC-RB)

#4
20250162899
2025-05-22

METHOD FOR SEPARATING AND PURIFYING PHOSPHORIC ACID AND PHOSPHOGYPSUM FROM WET-PROCESS PHOSPHORIC ACID SLURRY, AND PHOSPHORIC ACID AND PHOSPHOGYPSUM PREPARED THEREBY

#5
20250135375
2025-05-01

METHODS FOR REACTIVE CRYSTALLISATION

#6
20240199482
2024-06-20

A CRYSTALLIZATION METHOD OF GYPSUM

#7
20240124319
2024-04-18

A PROCESS FOR THE CONTINUOUS PREPARATION OF ALPHA-CALCIUM SULPHATE HEMIHYDRATE AND AN APPARATUS

#8
20230405526
2023-12-21

METHOD AND SYSTEM FOR EXTRACTION OF MINERALS BASED ON DIVALENT CATIONS FROM BRINE

#9
20230373789
2023-11-23

METHOD FOR PRODUCING PHOSPHORIC ACID AND CALCIUM SULPHATE QUALITY SUITABLE FOR A CLINKER PROCESS FOR THE COMMERCIAL AND INDUSTRIAL UTILIZATION OF CALCIUM SULPHATE

#10
20230257277
2023-08-17

METHOD FOR COMPRESSION OF AQUEOUS SLURRY CONTAINING SOLID FOREIGN MATTER AND PAPER DUST, AND TREATMENT METHOD OF WASTE GYPSUM BOARD

#11
20230182077
2023-06-15

Method and system for extraction of minerals based on divalent cations from brine

#12
20230126633
2023-04-27

Integrated method for producing sulphur dioxide quality suitable for a sulphuric acid process from calcium sulphate/phosphogypsum from phosphoric acid production

#13
20230077925
2023-03-16

METHOD OF PREPARING FERRIC PHOSPHATE FROM IRON-CONTAINING WASTE

#14
20230039227
2023-02-09

INTEGRATED METHOD FOR THE COMMERCIAL AND INDUSTRIAL UTILISATION OF CALCIUM SULPHATE WHILST OBTAINING RARE EARTH ELEMENTS FROM THE PRODUCTION OF PHOSPHORIC ACID

#15
20210347651
2021-11-11

Countercurrent process for recovering high purity copper sulfate values from low grade ores

#16
20210140012
2021-05-13

Process for the recovery of rare earths

#17
20210114878
2021-04-22

Method for production of ammonium phosphate from phosphate rock slurry

#18
20210070637
2021-03-11

Method of treating wastewater

#19
20210061709
2021-03-04

Methods for coal combustion product (CCP) recovery and related products

#20
20200071179
2020-03-05

Releasing impurities from a calcium-based mineral

#21
20190276330
2019-09-12

Processes and systems for regenerating alkali process streams

#22
20190276328
2019-09-12

METHOD FOR THE PRODUCTION OF LITHIUM CARBONATE FROM SALT BRINES

#23
20180170766
2018-06-21

System and methods for removing impurities from phosphogypsum and manufacturing gypsum binders and products

#24
20180162740
2018-06-14

Method for complex treatment of phosphogypsum

#25
20180134573
2018-05-17

Process and systems for regenerating alkali process streams

#26
20180002187
2018-01-04

Process for treating a sulfurous fluid to form gypsum and magnesium carbonate

#27
20170190592
2017-07-06

Extraction of products from titanium-bearing minerals

#28
20170174525
2017-06-22

Extraction of products from titanium-bearing minerals

#29
20170158523
2017-06-08

Extraction of products from titanium-bearing minerals

#30
20170121183
2017-05-04

Method for reducing elemental sulfur in gypsum products

#31
20170022070
2017-01-26

System and methods for removing impurities from phosphogypsum and manufacturing gypsum binders and products

#32
20160137524
2016-05-19

Hematite manufacturing process and hematite manufactured by same

#33
20150041374
2015-02-12

Method for reducing the content of fine material in FGD gypsum

#34
20110044883
2011-02-24

METHOD OF PURIFYING GYPSUM

#35
20100111821
2010-05-06

GYPSUM STABILISATION METHOD

#36
15498403
2018-02-27

Reclaiming useful products from exhaust gas clean-up system