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

Kozo Ito — 4 Patents

KIKitz: 2 patents #29 of 87Top 35%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
Kasai, JP: #1,843 of 5,842 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Kozo Ito has been granted 4 US patents while listed as an inventor at Kitz. The first was granted in 1995 and the most recent in December 2005. Kozo Ito ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Kozo Ito in Kasai, JP.

Patents per Year

Patents granted per year, 1995 to 2005Bar chart with a peak of 1 patents in 1995.peak 11995: 1 patents19951996: 1 patents19962003: 1 patents20032005: 1 patents2005

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6974509 Brass Koichi Hagiwara, Masaru Yamazaki, Yoshihiro Hirata, Mitsuhide Hirabayashi 2005-12-13
6599378 Copper-based alloy, method for production of the alloy, and products using the alloy Koichi Hagiwara, Masaru Yamazaki, Yukihiro Hirata, Mitsuhide Hirabayashi 2003-07-29
5498483 Wear-resistant sintered ferrous alloy for valve seat Yoshishige Takano 1996-03-12
5427600 Low alloy sintered steel and method of preparing the same Yoshiaki Itoh, Yoshinobu Takeda 1995-06-27