Inventor · disambiguated record
Hisao Hachisuka
Also filed as: HACHISUKA HISAO
20 granted patents·1 pending application·687 citations·filing 1990–2024
96Inventor score
Top patents by PatentIndex Score
21 records- 0192US6177011B1Composite reverse osmosis membrane having a separation layer with polyvinyl alcohol coating and method of reverse osmotic treatment of water using the sameNITTO DENKO CORP·Filed 1997·Granted Jan 23, 2001·100 cites·15 claims
- 0290US5910357ASeparation membrane and method of producing the same, and shape memory polymer compositionNITTO DENKO CORP·Filed 1997·Granted Jun 8, 1999·81 cites·22 claims
- 0388US6565747B1Spiral wound type separation membrane elementNITTO DENKO CORP·Filed 2000·Granted May 20, 2003·51 cites·17 claims
- 0486US6413425B1Reverse osmosis composite membrane and reverse osmosis treatment method for water using the sameNITTO DENKO CORP·Filed 1998·Granted Jul 2, 2002·68 cites·4 claims
- 0584US6821430B2Method of treating reverse osmosis membrane element, and reverse osmosis membrane moduleNITTO DENKO CORP·Filed 2002·Granted Nov 23, 2004·43 cites·23 claims
- 0684US5882382APolyimide semipermeable membraneNITTO DENKO CORP·Filed 1996·Granted Mar 16, 1999·63 cites·8 claims
- 0778US5336409AComposite reverse osmosis membrane and novel acid chlorideNITTO DENKO CORP·Filed 1993·Granted Aug 9, 1994·39 cites·5 claims
- 0873US12186714B2Reverse osmosis membrane and method of producing the sameMEMSTAR USA INC·Filed 2020·Granted Jan 7, 2025·1 cites·17 claims
- 0971US6026968AReverse osmosis composite membraneNITTO DENKO CORP·Filed 1997·Granted Feb 22, 2000·37 cites·9 claims
- 1071US5888605APolysulfone semipermeable membrane and method of manufacturing the sameNITTO DENKO CORP·Filed 1996·Granted Mar 30, 1999·28 cites·7 claims
- 1169US5749943AMethod of selectively separating unsaturated hydrocarbonPETROLEUM ENERGY CENTER FOUND·Filed 1996·Granted May 12, 1998·37 cites·5 claims
- 1267US2024307831A1Reverse osmosis membrane and method of producing the sameMEMSTAR USA INC·Filed 2024·Application pending·0 cites
- 1365US5817165AFluorine-containing polyimide gas separation membrane and method of manufacturing the sameNITTO DENKO CORP·Filed 1996·Granted Oct 6, 1998·30 cites·18 claims
- 1464US5510527AAcid chlorideNITTO DENKO CORP·Filed 1994·Granted Apr 23, 1996·22 cites·1 claims
- 1563US5811196ALaminated asymmetric membrane and method for manufacturing the sameNITTO DENKO CORP·Filed 1997·Granted Sep 22, 1998·26 cites·16 claims
- 1654US5647894AGas separating composite membrane and process for producing the sameNITTO DENKO CORP·Filed 1995·Granted Jul 15, 1997·20 cites·12 claims
- 1749US5162631APower supply unit for electrical discharge machineBROTHER IND LTD·Filed 1990·Granted Nov 10, 1992·13 cites·5 claims
- 1847US5709733AGas separation methodNITTO DENKO CORP·Filed 1996·Granted Jan 20, 1998·12 cites·12 claims
- 1941US5690870AMethod of manufacturing a polyimide-type gas permeation membrane including fluorineNITTO DENKO CORP·Filed 1995·Granted Nov 25, 1997·10 cites·16 claims
- 2033US5750633ADope for cast formation and method of manufacturing the sameNITTO DENKO CORP·Filed 1995·Granted May 12, 1998·4 cites·27 claims
- 2132US5859182AFluorine-containing polyquinazolone polymer and separation membrane using the sameNITTO DENKO CORP·Filed 1997·Granted Jan 12, 1999·2 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →