Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KS

Koji Sasaki — 179 Patents

Canon: 34 patents #1,485 of 19,416Top 8%
Hitachi: 23 patents #1,433 of 28,497Top 6%
Ricoh Company: 20 patents #1,079 of 9,818Top 15%
FIFujifilm Business Innovation: 17 patents #576 of 1,659Top 35%
DEDexerials: 14 patents #27 of 387Top 7%
TLTokyo Electron Limited: 7 patents #1,084 of 5,567Top 20%
Sony: 6 patents #6,820 of 25,231Top 30%
FCFuji Electric Co.: 6 patents #401 of 2,643Top 20%
TCToyoda Gosei Co.: 6 patents #376 of 2,296Top 20%
FCFurukawa Electric Co.: 4 patents #478 of 2,370Top 25%
Panasonic: 4 patents #6,210 of 21,108Top 30%
Fujitsu Limited: 4 patents #7,093 of 24,456Top 30%
MIMitutoyo: 4 patents #230 of 721Top 35%
ZKZeria Shinyaku Kogyo Kabushiki Kaisha: 3 patents #1 of 19Top 6%
NANamics: 3 patents #23 of 113Top 25%
HCHitachi Cable: 2 patents #313 of 1,086Top 30%
NCNkk Co.: 2 patents #309 of 1,173Top 30%
JMJohnan Manufacturing: 2 patents #8 of 34Top 25%
MIMitsuba: 2 patents #181 of 618Top 30%
SCSokkia Co.: 1 patents #20 of 45Top 45%
ACAsahi Glass Co.: 1 patents #1,233 of 2,251Top 55%
FCFuji Electric Device Technology Co.: 1 patents #91 of 205Top 45%
TLToyota Central R&D Labs: 1 patents #823 of 1,657Top 50%
ADAdvantest: 1 patents #714 of 1,193Top 60%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
SCSumitomo Metal Mining Co.: 1 patents #385 of 736Top 55%
TIToray Industries: 1 patents #2,000 of 3,690Top 55%
Overall (All Time): #4,305 of 4,157,543Top 1%
179 Patents All Time
Koji Sasaki has been granted 179 US patents while listed as an inventor at Canon. The first was granted in 1980 and the most recent in December 2025. Koji Sasaki ranks #4,305 of 4,157,543 US inventors in our database (top 0.10%). Patent records list Koji Sasaki in Yokohama, MH, JP.

Patents per Year

Patents granted per year, 1991 to 2025Bar chart with a peak of 13 patents in 2020.peak 131991: 3 patents19911992: 3 patents1993: 5 patents1994: 4 patents19941995: 1 patents1998: 2 patents2001: 2 patents20012002: 3 patents2003: 2 patents2004: 2 patents20042005: 2 patents2006: 1 patents2007: 2 patents20072008: 3 patents2009: 2 patents2011: 3 patents20112012: 8 patents2013: 9 patents2014: 8 patents20142015: 6 patents2016: 8 patents2017: 8 patents20172018: 8 patents2019: 12 patents2020: 13 patents20202021: 7 patents2022: 10 patents2023: 5 patents20232024: 9 patents2025: 11 patents2025

Issued Patents All Time

Showing 1–25 of 179 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12510700 Polarization element, method of manufacturing polarization element, and head-up display apparatus Naoki Hanashima, Kazuyuki Shibuya 2025-12-30
12463100 Semiconductor module Kisho Ashida, Daisuke Kawase 2025-11-04
12455515 Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method Sakae TAKEUCHI, Shinichi Takagi, Yuka ZENITANI, Yoshifumi Eri, Mai MOCHIDA 2025-10-28
12421396 Silica particles and method for producing the same Yuka ZENITANI, Sakae TAKEUCHI, Yoshifumi Eri, Mai MOCHIDA 2025-09-23
12383936 Cleaning method and processing apparatus Tomoya Hasegawa 2025-08-12
12371784 Gas management method and substrate processing system Yuji SESHIMO, Katsuyuki Higashi 2025-07-29
12351467 Silica particle and method for producing the same Yuka ZENITANI, Sakae TAKEUCHI, Yoshifumi Eri, Takahiro Mizuguchi 2025-07-08
12287607 Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method Shimpei Takagi, Sakae TAKEUCHI, Yuka ZENITANI, Yoshifumi Eri, Mai MOCHIDA 2025-04-29
12257841 Water-repellent member, inkjet head, method of manufacturing water-repellent member, and method of manufacturing inkjet head Norihiko Ochi, Junri Ishikura 2025-03-25
12215033 Silica particles comprising nitrogen element-containing compound containing molybdenum element Yuka ZENITANI, Sakae TAKEUCHI, Yoshifumi Eri, Mai MOCHIDA 2025-02-04
12200179 Image forming apparatus management system, image forming apparatus, managing apparatus, terminal apparatus, image forming apparatus managing method, and image forming program Atsushi Sakagami, Naoto Sakurai, Daiya Miyasaka, Tomoko Nishizawa, Yasuhiko Tsugawa +1 more 2025-01-14
12170601 Network management device, network management system and network management method 2024-12-17
12162283 Liquid ejection head and process for producing liquid ejection head Kazuhiro Asai, Jun Yamamuro, Shingo Nagata 2024-12-10
12162769 Silica particles and manufacturing method thereof Sakae TAKEUCHI, Yuka ZENITANI, Yoshifumi Eri, Mai MOCHIDA 2024-12-10
12090739 Method for manufacturing laminated structure and method for manufacturing liquid ejection head substrate Kouji Hasegawa 2024-09-17
12077443 Silica particles and method for producing the same Yuka ZENITANI, Sakae TAKEUCHI, Yoshifumi Eri, Mai MOCHIDA 2024-09-03
12005708 Liquid ejection head and process for producing liquid ejection head Kazuhiro Asai, Jun Yamamuro, Shingo Nagata 2024-06-11
11938729 Liquid ejection head and process for producing liquid ejection head Kazuhiro Asai, Jun Yamamuro, Shingo Nagata 2024-03-26
11881396 Deposition method Keisuke Suzuki, Tomoya Hasegawa 2024-01-23
11866340 Silica particle and method for producing the same Yuka ZENITANI, Sakae TAKEUCHI, Yoshifumi Eri, Takahiro Mizuguchi 2024-01-09
11849093 Image forming apparatus management system, image forming apparatus, managing apparatus, terminal apparatus, image forming apparatus managing method, and image forming program Atsushi Sakagami, Naoto Sakurai, Daiya Miyasaka, Tomoko Nishizawa, Yasuhiko Tsugawa +1 more 2023-12-19 $802,000
11841560 Depolarizing plate Akio Takada, Eiji Takahashi, Nobuyuki Koike, Naoki Hanashima 2023-12-12
11795302 Resin particles and method for manufacturing resin particles Takahiro Mizuguchi, Yuka ZENITANI, Sakae TAKEUCHI, Yoshifumi Eri 2023-10-24
11784902 Network management device, network management system and network management method 2023-10-10
11745231 Cleaning method and processing apparatus Masami Oikawa, Tomoya Hasegawa 2023-09-05