Inventor · disambiguated record
Akifumi Hayakawa
Also filed as: HAYAKAWA AKIFUMI
3 granted patents·103 citations·filing 1977–1990
73Inventor score
Top patents by PatentIndex Score
3 records- 0187US4133858AInjection foam molding processUSM CORP·Filed 1977·Granted Jan 9, 1979·64 cites·3 claims
- 0276US4153231AMould assembly for foam moulding of plastic materialsNIPPON STEEL CHEMICAL CO·Filed 1977·Granted May 8, 1979·35 cites·5 claims
- 0337US5244977AProcess for preparing rubber-modified styrene resinsNIPPON STEEL CHEMICAL CO·Filed 1990·Granted Sep 14, 1993·4 cites·3 claims
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