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Sei Naito — 45 Patents

KDKddi: 38 patents #1 of 396Top 1%

KLKddi R&D Laboratories: 3 patents #1 of 55Top 2%

DDDdi: 1 patents #13 of 53Top 25%

KDKdd: 1 patents #44 of 96Top 50%

KIKiddi: 1 patents #2 of 16Top 15%

Fujimino, JP: #4 of 165 inventorsTop 3%

Overall (All Time): #64,393 of 4,157,543Top 2%

45 Patents All Time

Sei Naito has been granted 45 US patents while listed as an inventor at Kddi. The first was granted in 2002 and the most recent in October 2025. Sei Naito ranks #64,393 of 4,157,543 US inventors in our database (top 1.5%). Patent records list Sei Naito in Fujimino, JP.

Patents per Year

Issued Patents All Time

Showing 1–25 of 45 patents

Patent #	Title	Co-Inventors	Date
12439079	Image decoding device, image decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2025-10-07
12407856	Image decoding device, image decoding method, and program	Kyohei UNNO, Yoshitaka KIDANI, Kei KAWAMURA	2025-09-02
12382070	Image decoding device, image decoding method, and program	Yoshitaka KIDANI, Kyohei UNNO, Kei KAWAMURA	2025-08-05
12363340	Image decoding device with block motion compensator and determination mechanism	Yoshitaka KIDANI, Kei KAWAMURA, Kyohei UNNO	2025-07-15
12301808	Image decoding device, image decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2025-05-13
12277739	Point-cloud decoding device, point-cloud decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2025-04-15
12238282	Image decoding device, image decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2025-02-25
12192501	Moving picture decoding device, moving picture decoding method, and program obtaining chrominance values from corresponding luminance values	Kei KAWAMURA	2025-01-07
12143629	Image decoding device, image encoding device, image processing system, and program	Kyohei UNNO, Kei KAWAMURA	2024-11-12
12137210	Image decoding device, image decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2024-11-05
12120353	Image decoding device, method, and program with prediction refinement optical flow	Kyohei UNNO, Kei KAWAMURA	2024-10-15
12022113	Image decoding device with block motion compensator and determination mechanism	Yoshitaka KIDANI, Kei KAWAMURA, Kyohei UNNO	2024-06-25
12010339	Image decoding device, image decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2024-06-11
11962801	Image decoding device, image decoding method, and program	Kyohei UNNO, Yoshitaka KIDANI, Kei KAWAMURA	2024-04-16
11949860	Image decoding device, image decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2024-04-02
11882308	Image decoding device, image encoding device, image processing system, and program	Kyohei UNNO, Kei KAWAMURA	2024-01-23
11871021	Moving picture decoding device, moving picture decoding method, and program obtaining chrominance values from corresponding luminance values	Kei KAWAMURA	2024-01-09
11750829	Moving picture decoding device, moving picture decoding method, and program obtaining chrominance values from corresponding luminance values	Kei KAWAMURA	2023-09-05
11627336	Image decoding device, image encoding device, image processing system, and program	Kyohei UNNO, Kei KAWAMURA	2023-04-11
11627311	Image decoding device, image decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2023-04-11
11463684	Image decoding device, image encoding device, image processing system, image decoding method, and program	Yoshitaka KIDANI, Kei KAWAMURA, Haruhisa Kato	2022-10-04
11451771	Moving-image decoder using intra-prediction, moving-image decoding method using intra-prediction, moving-image encoder using intra-prediction, moving-image encoding method using intra-prediction, and computer readable recording medium	Qiang Yao, Kei KAWAMURA	2022-09-20
11438625	Image decoding device, image encoding device, image processing system, and program	Kyohei UNNO, Kei KAWAMURA	2022-09-06
11438615	Moving picture decoding device, moving picture decoding method, and program obtaining chrominance values from corresponding luminance values	Kei KAWAMURA	2022-09-06
11412219	Image decoding device, image decoding method, and program	Kyohei UNNO, Kei KAWAMURA	2022-08-09