Inventor · disambiguated record
Hisashi Miyakawa
Also filed as: MIYAKAWA HISASHI
6 granted patents·77 citations·filing 1975–2000
83Inventor score
Top patents by PatentIndex Score
6 records- 0170US5034132AMethod for extractionTOYO ENGINEERING CORP·Filed 1989·Granted Jul 23, 1991·23 cites·12 claims
- 0269US4003801ATreatment of water vapor generated in concentrating an aqueous urea solutionMITSUI TOATSU CHEMICALS·Filed 1975·Granted Jan 18, 1977·12 cites·17 claims
- 0366US5237048AMethod for purifying polymerTOYO ENGINEERING CORP·Filed 1991·Granted Aug 17, 1993·17 cites·6 claims
- 0450US5133913AMethod for producing a foamed resin using a blowing and extracting agentTOYO ENGINEERING CORP·Filed 1989·Granted Jul 28, 1992·14 cites·20 claims
- 0539US6041272ADesulfurization process for flue gasesTOYO ENGINEERING CORP·Filed 1998·Granted Mar 21, 2000·11 cites·16 claims
- 0634US6428760B1Method for desulfurizing exhaust gasTOYO ENGINEERING CORP·Filed 2000·Granted Aug 6, 2002·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →