ClassID:

85987

C01G49/04 - CPC Classification

Classification description:

Compounds of iron; Oxides; Hydroxides Ferrous oxide (FeO)

Recent Application in this class:
#1
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2025-12-25

HIGH EFFICIENCY ACID-BASE LEACHING METHODS AND SYSTEMS

#2
20250282633
2025-09-11

SEQUENTIAL HYDROMETALURGICAL RECOVERY OF METAL VALUES WITH SEQUESTERED CARBON

#3
20250017868
2025-01-16

METHOD FOR REMOVING IMPURITIES FROM NANOPARTICLES

#4
20240400407
2024-12-05

WATER TREATMENT AND PURIFICATION METHOD

#5
20240300823
2024-09-12

Method for treating water contaminated with polycyclic organics

#6
20230331581
2023-10-19

Method for treating polluted composition

#7
20230212027
2023-07-06

METHOD FOR SEPARATING IRON ELEMENT IN BRINE AND APPLICATION THEREOF

#8
20220162449
2022-05-26

DEEP BLUISH-BLACK EFFECT PIGMENTS

#9
20220089454
2022-03-24

Crystalline α-FE2O3 nanoparticles and method of making and use thereof in photodegradation of organic pollutants, as a photocatalyst and as an antibacterial composition

#10
20210087072
2021-03-25

Alpha-FE2O3 nanoparticles and method of making and use thereof in photodegradation of organic pollutants, as a photocatalyst and as an antibacterial composition

#11
20210027807
2021-01-28

Method of producing magnetic powder and method of producing magnetic recording medium

#12
20200354812
2020-11-12

Method for treating slag

#13
20200346224
2020-11-05

MINERAL BENEFICIATION METHOD USING BIOREAGENT EXTRACTED FROM GRAM POSITIVE BACTERIA

#14
20190070598
2019-03-07

Method for the purification of alumina

#15
20170320749
2017-11-09

Method for the processing of potassium containing materials

#16
20170014533
2017-01-19

Dendronized metallic oxide nanoparticles, a process for preparing the same and their uses

#17
20160376527
2016-12-29

Pyrophoric iron sulfide treatment using sodium nitrite

#18
20160083410
2016-03-24

Metal oxalate hydrate body having a certain shape, preparation method thereof, and metal oxide/carbon composite body prepared from the same

#19
20150321158
2015-11-12

Material comprising two different non-metallic parrticles having different particle sizes for use in solar reactor

#20
20150273533
2015-10-01

Pyrophoric iron sulfide treatment using sodium nitrite

#21
20150183656
2015-07-02

Sulfided iron (II) compound and method of manufacture

#22
20140374654
2014-12-25

Highly active nano iron catalyst for the absorption of hydrogen sulfide

#23
20140294715
2014-10-02

Method of manufacturing ferrous oxide nanoparticle, method of forming carbon nanotube, and ferrous oxide nanoparticle

#24
20130315839
2013-11-28

Iron oxide nanoparticles as MRI contrast agents and their preparing method

#25
20130289292
2013-10-31

Magnetic-cored dendrimer, the method for preparing the same, and the contaminant treatment method using the same

#26
20130101501
2013-04-25

Urchin-like iron oxide and a method for producing the urchin-like iron oxide

#27
20120225006
2012-09-06

NANO-SIZED PARTICLES, PROCESSES OF MAKING, COMPOSITIONS AND USES THEREOF

#28
20120168669
2012-07-05

Composite nanoparticles and methods for making the same

#29
20120114944
2012-05-10

URCHIN-LIKE IRON OXIDE AND A METHOD FOR PRODUCING THE URCHIN-LIKE IRON OXIDE

#30
20110192800
2011-08-11

MAGNETIC-CORED DENDRIMER, THE METHOD FOR PREPARING THE SAME, AND THE CONTAMINANT TREATMENT METHOD USING THE SAME

#31
20110165086
2011-07-07

Iron oxide nanoparticles as MRI contrast agents and their preparing method

#32
20100276310
2010-11-04

Method of coating a particle

#33
20100210449
2010-08-19

Composition of amorphous iron oxide hydroxide, desulfurizer comprising the same, and methods for preparing and regenerating the desulfurizer

#34
20100207061
2010-08-19

Preparation Method of Metal Oxide from Metal Halide by Dehydro Halogenation with Base and Metal Oxide Prepared Therefrom

#35
20100101139
2010-04-29

Process for the manufacture of a colloid of iron oxide

#36
20100021771
2010-01-28

METHOD OF MANUFACTURING HEXAGONAL FERRITE MAGNETIC POWDER, MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME

#37
20090095132
2009-04-16

PROCESSING OF METAL CHLORIDE SOLUTIONS AND METHOD AND APPARATUS FOR PRODUCING DIRECT REDUCED IRON

#38
20080069748
2008-03-20

MULTIVALENT IRON ION SEPARATION IN METAL RECOVERY CIRCUITS

#39
20080047395
2008-02-28

Composition for a desulfurizer with a high sulfur capacity and the process of making the same

#40
20070264834
2007-11-15

Method for synthesis of colloidal nanoparticles

#41
20070140951
2007-06-21

Nano-sized particles, processes of making, compositions and uses thereof

#42
20070009423
2007-01-11

Apparatus and Methods For Producing Calcium Chloride, and Compositions and Products Made Therefrom

#43
20060147369
2006-07-06

Nanoparticle production and corresponding structures

#44
20060060998
2006-03-23

Method for synthesis of colloidal nanoparticles

#45
20050063889
2005-03-24

High purity nanoscale metal oxide powders and methods to produce such powders