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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Shigeru Date — 3 Patents

Denso: 2 patents #4,986 of 11,792Top 45%
Hitachi: 2 patents #13,405 of 28,497Top 50%
NTNTT: 1 patents #2,911 of 4,871Top 60%
TOTokin: 1 patents #101 of 278Top 40%
Yokosuka, JP: #675 of 1,673 inventorsTop 45%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Shigeru Date has been granted 3 US patents while listed as an inventor at Denso. The first was granted in 2001 and the most recent in May 2002. Shigeru Date ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Shigeru Date in Yokosuka, JP.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6388562 Contactless IC card communication system and related method Masahiro Takiguchi, Kiyoshi Takahashi, Tatsuya Hirata, Hisanobu Dobashi, Shinji Nishimura +4 more 2002-05-14
6352202 Method and system for controlling contactless IC cards Masahiro Takiguchi, Kiyoshi Takahashi, Tatsuya Hirata, Hisanobu Dobashi, Shinji Nishimura +4 more 2002-03-05
6173900 IC card Hiroshi Yoshigi, Takehiro Ookawa, Ryouzou Yoshino, Kimiaki Andou, Tadashi Oonishi +4 more 2001-01-16 $1,089,000