Inventor · disambiguated record
Masaru Yamakawa
Also filed as: YAMAKAWA MASARU
2 granted patents·64 citations·filing 1988–2002
64Inventor score
Top patents by PatentIndex Score
2 records- 0178US5197540ABoring device for lining material in branched portions of lined conduitASHIMORI IND CO LTD·Filed 1988·Granted Mar 30, 1993·52 cites·7 claims
- 0252US7341403B2Method of constructing information correspondence pipe, constructed structure, and construction memberSANKI ENG CO LTD·Filed 2002·Granted Mar 11, 2008·12 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →