Inventor · disambiguated record
Yasutsugu Takeda
Also filed as: TAKEDA YASUTSUGU
5 granted patents·100 citations·filing 1973–1986
81Inventor score
Files withHITACHI LTD5
Top patents by PatentIndex Score
5 records- 0187US4037919AHolographic device with divided object beams, a multicolor light source and direction-selective screenHITACHI LTD·Filed 1975·Granted Jul 26, 1977·43 cites·2 claims
- 0281US4021606AHologram apparatusHITACHI LTD·Filed 1975·Granted May 3, 1977·33 cites·10 claims
- 0360US4051528AApparatus for optically reconstructing informationHITACHI LTD·Filed 1976·Granted Sep 27, 1977·16 cites·12 claims
- 0443US4759030ASemiconductor laserHITACHI LTD·Filed 1986·Granted Jul 19, 1988·6 cites·6 claims
- 0534US3937554AHolograms impregnated with laser active materialHITACHI LTD·Filed 1973·Granted Feb 10, 1976·2 cites·21 claims
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