Top 20 Key Players companies in Optically stimulated luminescence by Highest Patent Value in the Japan in 2022 – Discovery

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The Optically stimulated luminescence top 20 is Discovery PatSnap’ annual ranking of the top 20 Highest Patent Value Optically stimulated luminescence Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2022, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.

In physics, optically stimulated luminescence (OSL) is a method for measuring doses from ionizing radiation. The method makes use of electrons trapped between the valence and conduction bands in the crystalline structure of certain minerals (most commonly quartz and feldspar). The trapping sites are imperfections of the lattice — impurities or defects. The ionizing radiation produces electron-hole pairs: Electrons are in the conduction band and holes in the valence band. The electrons that have been excited to the conduction band may become entrapped in the electron or hole traps. Under stimulation of light the electrons may free themselves from the trap and get into the conduction band. From the conduction band they may recombine with holes trapped in hole traps. If the centre with the hole is a luminescence center (radiative recombination centre) emission of light will occur. The photons are detected using a photomultiplier tube. The signal from the tube is then used to calculate the dose that the material had absorbed.

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1	Sony Group Corp.	Tokyo, Japan	Computer hardware,Software,Music, ...[+2]	Avg patent value: 1.82 M
2	Sony Semiconductor Solutions Corp.	Kanagawa, Japan	Semiconductor,Image sensor,CMOS sensor, ...[+2]	Avg patent value: 1.39 M
3	Panasonic Holdings Corp.	Osaka, Japan	Semiconductor,Industrial engineering,Electronics, ...[+2]	Avg patent value: 590,000
4	Matsushita Electronics Corp.	Osaka, Japan	Electronics,Computer hardware,DVD player, ...[+2]	Avg patent value: 590,000
5	Casio Computer Co., Ltd.	Tokyo, Japan	Projector,Electronics,Digital camera, ...[+2]	Avg patent value: 85,000
6	Casio Electronics Manufacturing Co., Ltd.	Saitama, Japan		Avg patent value: 85,000
7	Nichia Corp.	Tokushima, Japan	Laser diode,Semiconductor,LED lamp, ...[+2]	Avg patent value: 37,433
8	Hitachi Kokusai Electric, Inc.	Saga, Japan	Semiconductor,Electronics,Thin film, ...[+2]	Avg patent value: 3,400
9	Hitachi Ltd.	Tokyo, Japan	Elevator,Electrical equipment,Electric motor, ...[+2]	Avg patent value: 0
10	TOSHIBA Corp.	Tokyo, Japan	Semiconductor,Computer hardware,Electronics, ...[+2]	Avg patent value: 0
11	Fujitsu Ltd.	Tokyo, Japan	Cloud computing,Enterprise software,Information technology management, ...[+2]	Avg patent value: 0
12	Canon, Inc.	Tokyo, Japan	Computer hardware,Software,Computer vision, ...[+2]	Avg patent value: 0
13	Kobe Steel, Ltd.	Hyogo, Japan	Welding,Electronics,Mining engineering, ...[+2]	Avg patent value: 0
14	Sharp Corp.	Osaka, Japan	Computer hardware,Electronics,Telecommunications, ...[+2]	Avg patent value: 0
15	Sumitomo Chemical Co., Ltd.	Tokyo, Japan	Petrochemical,Agriculture,Pesticide, ...[+2]	Avg patent value: 0
16	Kyocera Corp.	Kyoto, Japan	Semiconductor,Electronics,Telecommunications, ...[+2]	Avg patent value: 0
17	Nitto Denko Corp.	Osaka, Japan	Semiconductor,Product design,Adhesive, ...[+2]	Avg patent value: 0
18	Sumitomo Rubber Industries, Ltd.	Kyoto, Japan	Rubber material,Plastics engineering,Radial tire, ...[+2]	Avg patent value: 0
19	Koito Manufacturing Co., Ltd.	Tokyo, Japan	Headlamp,Automotive engineering,Fixture, ...[+2]	Avg patent value: 0
20	FUJIFILM Corp.	Tokyo, Japan	Photography,Medical imaging,Computer hardware, ...[+2]	Avg patent value: 0