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

Pi R&D Co. — 21 Patents

Rank (All Time): #28,082 of 105,732Top 30%
41 inventors
21 Patents All Time

Patents per Year

Patents granted per year, 2003 to 2023Bar chart with a peak of 3 patents in 2003.peak 32003: 3 patents20032004: 1 patents2005: 2 patents20052008: 1 patents2010: 1 patents20102011: 2 patents2013: 2 patents20132014: 3 patents2015: 1 patents20152016: 1 patents2017: 2 patents20172018: 1 patents2023: 1 patents2023

Top Inventors at Pi R&D Co. All Time

Showing 1–41 of 41 inventors

RankNamePatents
1 Hiroshi Itatani 8
1 Maw Soe Win 8
1 Toshiyuki Goshima 8
#4 Shunichi Matsumoto 6
#5 Sigemasa Segawa 5
#6 Eiji Nagata 4
#7 Eika Kyo 3
#7 Masashi Yano 3
#7 Mitsuru Nozaki 3
#10 Hiroshi Nakagawa 2
#10 Katsuya Kikuchi 2
#10 Kazuhiko Tokoro 2
#10 Masahiro Aoyagi 2
#10 Shintaro Nakajima 2
#10 Shuzo Waki 2
#10 Takaki Mori 2
#17 Akihiro Nomoto 1
#17 Hiromasa Honjo 1
#17 Hiroyuki Ishii 1
#17 Hidenao Takato 1
#17 Isao Sakata 1
#17 Junichi Yamashita 1
#17 Ken Takanashi 1
#17 Kiyoshi Ishii 1
#17 Masanori Fujii 1
#17 Masanori Komuro 1
#17 Morio Gaku 1
#17 Norikatsu Akiyama 1
#17 Seung Joon Hong 1
#17 Tarou Itatani 1
#17 Takabumi Omori 1
#17 Takahiro Sato 1
#17 Tetsuaki Suzuki 1
#17 Toyokazu Nagato 1
#17 Toshihiro Zushi 1
#17 Tsunenori Sakamoto 1
#17 Whan Jin Roh 1
#17 Yasuo Kikuchi 1
#17 Yasuo Tanaka 1
#17 Yoshikazu Nishikawa 1
#17 Sucheta Gorwadkar 1