Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Tetsuya Ejiri — 35 Patents

NINgk Insulators: 34 patents #77 of 2,083Top 4%
Kasugai, JP: #18 of 842 inventorsTop 3%
Overall (All Time): #96,288 of 4,157,543Top 3%
35 Patents All Time
Tetsuya Ejiri has been granted 35 US patents while listed as an inventor at Ngk Insulators. The first was granted in 1997 and the most recent in October 2025. Tetsuya Ejiri ranks #96,288 of 4,157,543 US inventors in our database (top 2.3%). Patent records list Tetsuya Ejiri in Kasugai, JP.

Issued Patents All Time

Showing 1–25 of 35 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12438336 Phosphor element, phosphor device, and illumination apparatus Jungo Kondo, Naotake Okada, Shoichiro Yamaguchi, Yuichi Iwata 2025-10-07
11674652 Phosphor element, phosphor device, and illumination device Jungo Kondo, Naotake Okada, Shoichiro Yamaguchi, Yuichi Iwata 2023-06-13
11561333 White-light generating device with fluorescent body with inclined side surface Jungo Kondo, Yuichi Iwata 2023-01-24
11385334 Optical scanning element Jungo Kondo, Naotake Okada, Keiichiro Asai, Shoichiro Yamaguchi 2022-07-12
10859747 Phosphor element and illumination device Jungo Kondo, Naotake Okada, Shoichiro Yamaguchi, Keiichiro Asai, Shuhei Higashihara +2 more 2020-12-08
10074962 Grating element and external resonator type light emitting device Jungo Kondo, Shoichiro Yamaguchi, Keiichiro Asai, Naotake Okada 2018-09-11
10003175 External-resonator-type light-emitting device Jungo Kondo, Shoichiro Yamaguchi 2018-06-19
9979157 External-resonator-type light-emitting device Jungo Kondo, Shoichiro Yamaguchi 2018-05-22
9874694 Production method for mounting structure for grating elements Keiichiro Asai, Shoichiro Yamaguchi, Jungo Kondo, Naotake Okada 2018-01-23
9859684 Grating element and external-resonator-type light emitting device Jungo Kondo, Shoichiro Yamaguchi, Keiichiro Asai, Naotake Okada 2018-01-02
9574933 Terahertz-wave detection element, manufacturing method therefor, and observation apparatus Jungo Kondo, Yuichi Iwata 2017-02-21
9261661 Structures of connecting optical waveguide parts and holding parts of holding optical input members, and a method of producing the same Jungo Kondo 2016-02-16
8730565 Electromagnetic wave radiation element and method for producing same Jungo Kondo, Yuichi Iwata 2014-05-20
8712204 Optical modulation element Jungo Kondo, Yuichi Iwata 2014-04-29
8542433 Electromagnetic wave oscillating devices and a method of producing the same Jungo Kondo, Yuichi Iwata 2013-09-24
8542434 Optical waveguide devices and harmonic wave generating devices Jungo Kondo, Yuichi Iwata, Shoichiro Yamaguchi, Taku Nishigaki 2013-09-24
8531760 Semiconductor wavelength converting devices and light sources for generating infrared rays Jungo Kondo, Yuichi Iwata 2013-09-10
8384989 Electromagnetic wave oscillating devices Jungo Kondo, Kenji Aoki, Yuichi Iwata 2013-02-26
8355197 Electromagnetic wave oscillating devices Jungo Kondo, Kenji Aoki, Yuichi Iwata 2013-01-15
8305679 Electromagnetic wave oscillating devices Jungo Kondo, Kenji Aoki, Yuichi Iwata 2012-11-06
8225684 Methods for detecting particulates in a honeycomb filter Jungo Kondo, Yuichi Iwata 2012-07-24
7995872 Optical modulator component and optical modulator Kenji Aoki, Osamu Mitomi, Jungo Kondo, Yuichi Iwata 2011-08-09
7974501 Optical modulators Akira Hamajima, Jungo Kondo, Osamu Mitomi, Kenji Aoki 2011-07-05
7869669 Optical phase modulator Osamu Mitomi, Kenji Aoki, Jungo Kondo, Yuichi Iwata, Akiyoshi Ide 2011-01-11
7787773 Radio oscillating and radar systems Jungo Kondo, Osamu Mitomi, Kenji Aoki, Yuichi Iwata 2010-08-31 $96,000