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USPTO Patent Rankings Data through Dec 31, 2025
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Masato Sumiyoshi — 27 Patents

Kioxia: 21 patents #29 of 1,813Top 2%
Kabushiki Kaisha Toshiba: 6 patents #4,930 of 21,451Top 25%
Kawasaki, JP: #874 of 15,035 inventorsTop 6%
Overall (All Time): #142,059 of 4,157,543Top 4%
27 Patents All Time
Masato Sumiyoshi has been granted 27 US patents while listed as an inventor at Kioxia. The first was granted in 2012 and the most recent in September 2025. Masato Sumiyoshi ranks #142,059 of 4,157,543 US inventors in our database (top 3.4%). Patent records list Masato Sumiyoshi in Kawasaki, JP.

Issued Patents All Time

Showing 1–25 of 27 patents

Patent #TitleCo-InventorsDate
12418309 Code table generation device, memory system, and code table generation method Sho Kodama 2025-09-16
12108064 Memory system Daisuke Yashima, Keiri Nakanishi, Takashi Miura, Kohei Oikawa, Sho Kodama +2 more 2024-10-01
12081241 Code table generation device, memory system, and code table generation method Sho Kodama 2024-09-03
12057862 Data decompression device, memory system, and data decompression method Takashi Takemoto, Keiri Nakanishi 2024-08-06
12001339 Dictionary compression device and memory system Daisuke Yashima, Sho Kodama, Keiri Nakanishi, Youhei Fukazawa, Zheye Wang +2 more 2024-06-04
11899934 Compression device, compression and decompression device, and memory system Youhei Fukazawa, Sho Kodama, Keiri Nakanishi, Kohei Oikawa, Takashi Miura +2 more 2024-02-13
11868615 Compression device and control method Youhei Fukazawa, Kohei Oikawa, Sho Kodama, Keiri Nakanishi, Takashi Miura +2 more 2024-01-09
11824566 Data decompression device, data compression device, and memory system Zheye Wang, Keiri Nakanishi, Kohei Oikawa, Sho Kodama, Youhei Fukazawa +2 more 2023-11-21
11818376 Memory system Daisuke Yashima, Keiri Nakanishi, Takashi Miura, Kohei Oikawa, Sho Kodama +2 more 2023-11-14
11777518 Data compression device, memory system and method Daisuke Yashima, Youhei Fukazawa, Sho Kodama, Keiri Nakanishi, Kohei Oikawa +2 more 2023-10-03
11770132 Compression device and control method Sho Kodama, Keiri Nakanishi 2023-09-26
11742876 Compression device and decompression device Keiri Nakanishi, Kohei Oikawa, Sho Kodama 2023-08-29
11714552 Memory system Sho Kodama, Keiri Nakanishi, Zheye Wang, Kohei Oikawa, Youhei Fukazawa +2 more 2023-08-01
11651833 Error detection in memory system Kohei Oikawa, Keiri Nakanishi, Sho Kodama, Daisuke Yashima, Youhei Fukazawa +2 more 2023-05-16
11588498 Character string search device and memory system Daisuke Yashima, Kohei Oikawa, Sho Kodama, Keiri Nakanishi, Youhei Fukazawa +2 more 2023-02-21
11561738 Memory system Keiri Nakanishi, Sho Kodama, Kohei Oikawa 2023-01-24
11461008 Memory system for improving compression performance of a dictionary coder circuit Sho Kodama, Keiri Nakanishi, Kohei Oikawa, Daisuke Yashima, Youhei Fukazawa 2022-10-04
11431995 Memory system Daisuke Yashima, Keiri Nakanishi, Takashi Miura, Kohei Oikawa, Sho Kodama +2 more 2022-08-30
11397546 Memory system Keiri Nakanishi, Takashi Miura, Kohei Oikawa, Daisuke Yashima, Sho Kodama +2 more 2022-07-26
11381250 Decode device Kohei Oikawa 2022-07-05
11309909 Compression device, decompression device, and method Youhei Fukazawa, Keiri Nakanishi, Sho Kodama, Kohei Oikawa, Daisuke Yashima +2 more 2022-04-19
8730250 Image processor and command processing method Yasuki Tanabe, Takashi Miyamori, Shunichi Ishiwata, Katsuyuki Kimura, Takahisa Wada +2 more 2014-05-20
8611645 Apparatus, method and non-transitory computer readable medium to perform image recognizing using dictionary data Manabu Nishiyama, Tomoki Watanabe 2013-12-17
8428353 Calculation apparatus for amount of characteristic and discrimination apparatus Manabu Nishiyama, Tomoki Watanabe 2013-04-23
8413123 Compiling device and compiling method Yasuki Tanabe, Takashi Miyamori, Shunichi Ishiwata, Katsuyuki Kimura, Keiri Nakanishi +1 more 2013-04-02