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

Keizo Ihara — 3 Patents

TETeac: 3 patents #117 of 440Top 30%
Musashino, JP: #647 of 1,284 inventorsTop 55%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Keizo Ihara has been granted 3 US patents while listed as an inventor at Teac. The first was granted in 1992 and the most recent in March 2007. Keizo Ihara ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Keizo Ihara in Musashino, JP.

Patents per Year

Patents granted per year, 1992 to 2007Bar chart with a peak of 1 patents in 1992.peak 11992: 1 patents19922001: 1 patents20012007: 1 patents2007

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7193406 Data transmitting and receiving apparatus Masayuki Mori, Nobukazu Sasaki, Teruyoshi Kobayashi 2007-03-20
6212580 Integrated recorder system which reads an instrumental signal from an input module so as to record instrumental data derived from the instrumental signal, and transmits the instrumental data recorded therein to an output module Shizuo Hosaka, Mineaki Kumamoto 2001-04-03
5146371 System including a digital audio tape recorder or equivalent device for recording non-audio signals Toshihiko Hamada, Masato IIJIMA 1992-09-08