Inventor · disambiguated record
Toshio Hirokawa
Also filed as: HIROKAWA TOSHIO
5 granted patents·71 citations·filing 1979–1994
81Inventor score
Top patents by PatentIndex Score
5 records- 0173US4294095AProcess for fabricating heavy wall to pipeNIPPON STEEL CORP·Filed 1979·Granted Oct 13, 1981·18 cites·10 claims
- 0267US5134640ASynchrotron radiation apparatusTOSHIBA KK·Filed 1991·Granted Jul 28, 1992·22 cites·18 claims
- 0352US5353323AX-ray exposure apparatusTOSHIBA KK·Filed 1994·Granted Oct 4, 1994·15 cites·12 claims
- 0442US4436239AMethod and apparatus for manufacturing spiral pipeNIPPON STEEL CORP·Filed 1981·Granted Mar 13, 1984·11 cites·11 claims
- 0533US4592389ARotary valveTOYODA MACHINE WORKS LTD·Filed 1985·Granted Jun 3, 1986·5 cites·2 claims
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