Inventor · disambiguated record
Sadao Murai
Also filed as: MURAI SADAO
3 granted patents·102 citations·filing 1975–1977
72Inventor score
Files withSEIKISUI CHEMICAL CO LTD3
Top patents by PatentIndex Score
3 records- 0189US4107249AMethod for forming an annular groove in a thermoplastic pipeSEIKISUI CHEMICAL CO LTD·Filed 1976·Granted Aug 15, 1978·84 cites·3 claims
- 0252US4036930AMethod of manufacturing resin tubes alternately having a thick wall portion and a thin wall portionSEIKISUI CHEMICAL CO LTD·Filed 1975·Granted Jul 19, 1977·15 cites·14 claims
- 0329US4135871AApparatus for manufacturing resin tubes alternately having a thick wall portion and a thin wall portionSEIKISUI CHEMICAL CO LTD·Filed 1977·Granted Jan 23, 1979·3 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →