CPC Subgroup Additional Only
G03H 2240/21 Optical density variations
Full Title
Hologram nature or properties > Details of physical variations exhibited in the hologram > Optical density variations
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- G03H 2240/22 Chromatic variations, e.g. photochromic or electrochromic
Top Applicants
Top 10 applicants by patent filingsfor class G03, 2013–2023, worldwide · Source: EPO PATSTAT
- CANON JP 19,215
- CANON 12,916
- ASML NETHERLANDS NL 10,000
- FUJIFILM JP 7,814
- SAMSUNG ELECTRONICS COMPANY KR 5,181
- CARL ZEISS SMT DE 5,079
- RICOH COMPANY JP 4,343
- LG INNOTEK COMPANY KR 4,054
- KYOCERA DOCUMENT SOLUTIONS 3,812
- KYOCERA DOCUMENT SOLUTIONS JP 3,682