Inventor · disambiguated record
Sako Ishikawa
Also filed as: ISHIKAWA SAKO
5 granted patents·123 citations·filing 1983–1996
82Inventor score
Technology areasG06F
Files withHITACHI LTD5
Top patents by PatentIndex Score
5 records- 0175US5852728AUninterruptible clock supply apparatus for fault tolerant computer systemHITACHI LTD·Filed 1996·Granted Dec 22, 1998·76 cites·4 claims
- 0246US4677583AApparatus for decimal multiplicationHITACHI LTD·Filed 1984·Granted Jun 30, 1987·16 cites·11 claims
- 0344US4603397ABinary coded decimal number division apparatusHITACHI LTD·Filed 1983·Granted Jul 29, 1986·14 cites·4 claims
- 0438US4635220ABinary coded decimal number division apparatusHITACHI LTD·Filed 1983·Granted Jan 6, 1987·11 cites·5 claims
- 0532US4543641AMultiplication device using multiple-input adderHITACHI LTD·Filed 1983·Granted Sep 24, 1985·6 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →