Inventor · disambiguated record
Yoshio Udagawa
Also filed as: UDAGAWA YOSHIO
9 granted patents·175 citations·filing 1980–1987
89Inventor score
Files withUDAGAWA YOSHIO4BLUE BOX TOY FACTORY1BLUE BOX TOY FACTORY LTD1DAH YAN TOY IND CO LTD1DAH YANG TOY IND CO LTD1
Top patents by PatentIndex Score
9 records- 0184US4821575AUltrasonic flaw detecting method and apparatusNIPPON STEEL CORP·Filed 1987·Granted Apr 18, 1989·73 cites·10 claims
- 0272US4708685AToysBLUE BOX TOY FACTORY·Filed 1986·Granted Nov 24, 1987·32 cites·7 claims
- 0370USD289666SToy trackway or similar articleUDAGAWA YOSHIO·Filed 1984·Granted May 5, 1987·13 cites·1 claims
- 0461US4678449ATrackway toy assemblyUDAGAWA YOSHIO·Filed 1986·Granted Jul 7, 1987·22 cites·4 claims
- 0559US4609363ATrack toyUDAGAWA YOSHIO·Filed 1985·Granted Sep 2, 1986·21 cites·8 claims
- 0658USD265751SToy vehicle trackBLUE BOX TOY FACTORY LTD·Filed 1980·Granted Aug 10, 1982·7 cites·1 claims
- 0745USD284492SToy trackwayUDAGAWA YOSHIO·Filed 1983·Granted Jul 1, 1986·3 cites·1 claims
- 0842USD300644SToy trackwayDAH YAN TOY IND CO LTD·Filed 1986·Granted Apr 11, 1989·4 cites·1 claims
- 0931USD281445SElevating fireman toyDAH YANG TOY IND CO LTD·Filed 1982·Granted Nov 19, 1985·0 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Yoshio Udagawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →