Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Haruo Kitado — 2 Patents

EPEpson: 1 patents #24 of 66Top 40%
The Procter & Gamble: 1 patents #7,923 of 10,297Top 80%
Shiojiri, JP: #542 of 760 inventorsTop 75%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Haruo Kitado has been granted 2 US patents while listed as an inventor at Epson. The first was granted in 1983 and the most recent in July 2003. Haruo Kitado ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Haruo Kitado in Shiojiri, JP.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6589770 Keratinocyte derived protease Akikazu Yoshikawa, Tomoko Zaiki 2003-07-08 $49,583,000
4400791 Dot matrix printer with compressed character data storage 1983-08-23