Inventor · disambiguated record
Masahisa Sonku
Also filed as: SONKU MASAHISA
3 granted patents·1 pending application·128 citations·filing 1978–2003
75Inventor score
Top patents by PatentIndex Score
4 records- 0185US5101863ARehabilitating underground pipes with expanding helically wound linerRIB LOC AUSTRALIA·Filed 1989·Granted Apr 7, 1992·70 cites·2 claims
- 0275US4951758AMethod of drilling a branch line aperture after internal lining of a pipeline and a water plug used in the methodSEKISUI CHEMICAL CO LTD·Filed 1989·Granted Aug 28, 1990·48 cites·8 claims
- 0340US4221303AAnticorrosive liquid tank with offset lining jointsSEIKISUI CHEMICAL CO LTD·Filed 1978·Granted Sep 9, 1980·10 cites·5 claims
- 0439US2005230666A1Antistatic molded article and antistatic coatingOTSUKA TOSHIHARU·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →