CPC Subgroup
C09K 11/08 containing inorganic luminescent materials
Full Title
Luminescent materials, e.g. electroluminescent or chemiluminescent > containing inorganic luminescent materials
30 direct subcodes
Child Classifications
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- C09K 11/54 containing zinc or cadmium
- C09K 11/55 containing beryllium, magnesium, alkali metals or alkaline earth metals
- C09K 11/56 containing sulfur
- C09K 11/57 containing manganese or rhenium
- C09K 11/58 containing copper, silver or gold
- C09K 11/59 containing silicon
- C09K 11/60 containing iron, cobalt or nickel
- C09K 11/61 containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
- C09K 11/62 containing gallium, indium or thallium
- C09K 11/63 containing boron
Top Applicants
Top 10 applicants by patent filingsfor class C09, 2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 7,954
- HALLIBURTON ENERGY SERVICES GROUP US 6,584
- NITTO DENKO CORPORATION JP 6,500
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,490
- DOW GLOBAL TECHNOLOGIES US 6,324
- FUJIFILM JP 5,832
- MERCK PATENT DE 5,481
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,147
- SAMSUNG DISPLAY KR 5,105
- NITTO DENKO CORPORATION 3,584