Inventor · disambiguated record
Hirozo Hirayama
Also filed as: HIRAYAMA HIROZO
2 granted patents·118 citations·filing 1989–1989
69Inventor score
Technology areasF16L
Top patents by PatentIndex Score
2 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
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →