CPC Subgroup Additional Only
F05D 2300/21 Oxide ceramics
Full Title
Materials; Properties thereof > Oxide or non-oxide ceramics > Oxide ceramics
10 direct subcodes
Child Classifications
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- F05D 2300/2102 Glass
- F05D 2300/2104 MIBA
- F05D 2300/2106 Quartz
- F05D 2300/2108 Phosphor
- F05D 2300/211 Silica
- F05D 2300/2112 Aluminium oxides
- F05D 2300/2114 Sapphire
- F05D 2300/2116 Zinc oxide
- F05D 2300/2118 Zirconium oxides
- F05D 2300/212 Aluminium titanate
Top Applicants
Top 10 applicants by patent filingsfor class F05, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 12,002
- UNITED TECHNOLOGIES CORPORATION (UTC) US 8,736
- SAFRAN AIRCRAFT ENGINES FR 6,804
- RAYTHEON TECHNOLOGIES CORPORATION US 4,530
- SIEMENS DE 4,371
- GE (GENERAL ELECTRIC COMPANY) 3,686
- ROLLS-ROYCE GB 3,594
- PRATT & WHITNEY CANADA CORPORATION CA 3,415
- VESTAS DK 3,076
- WOBBEN PROPERTIES DE 2,614