Inventor · disambiguated record
Yoshiyuki Shibuya
Also filed as: SHIBUYA YOSHIYUKI
26 granted patents·7 pending applications·279 citations·filing 1982–2024
95Inventor score
Top patents by PatentIndex Score
33 records- 0190US6682576B1Air filter medium, process of producing filter medium, air filter pack for air filters, and air filter unit for air filtersDAIKIN IND LTD·Filed 2000·Granted Jan 27, 2004·60 cites·12 claims
- 0290US6416562B1Air filter medium, air filter pack and air filter unit comprising the same, and method for producing air filter mediumDAIKIN IND LTD·Filed 2000·Granted Jul 9, 2002·61 cites·24 claims
- 0386US10265654B2Filtering medium for air filter, filter pack, air filter unit, and method for producing filtering medium for air filterDAIKIN IND LTD·Filed 2015·Granted Apr 23, 2019·4 cites·20 claims
- 0486US10265661B2Mixed powder and material for molding having PTFE as main component, and drawn porous bodyDAIKIN IND LTD·Filed 2017·Granted Apr 23, 2019·2 cites·7 claims
- 0586US9707504B2Composition having PTFE as main component, mixed powder, material for molding, filtering medium for filter, air filter unit, and a method for manufacturing a porous membraneDAIKIN IND LTD·Filed 2013·Granted Jul 18, 2017·7 cites·12 claims
- 0683US6261979B1Filter medium and air filter unit using the sameDAIKIN IND LTD·Filed 1997·Granted Jul 17, 2001·69 cites·14 claims
- 0776US9072993B2Filter medium equipped with porous film, method of manufacturing same, filter pack, and filter unitINUI KUNIHIKO·Filed 2011·Granted Jul 7, 2015·5 cites·5 claims
- 0871US12427459B2Air filter medium, air filter pack, and air filter unitDAIKIN IND LTD·Filed 2024·Granted Sep 30, 2025·0 cites·20 claims
- 0968US10406471B2Filter medium for air filter, filter pack, air filter unit, and method for producing filter medium for air filterDAIKIN IND LTD·Filed 2018·Granted Sep 10, 2019·0 cites·11 claims
- 1063US2023372849A1Air filter medium, method for producing air filter medium, mask filter medium, and pleated mask filter mediumDAIKIN IND LTD·Filed 2023·Application pending·0 cites
- 1160US7387700B2Method for preparing filtering materialDAIKIN IND LTD·Filed 2002·Granted Jun 17, 2008·9 cites·3 claims
- 1256US7097682B2Ventilation filter medium for container, and container and container cap equipped with ventilation filter mediumDAIKIN IND LTD·Filed 2002·Granted Aug 29, 2006·6 cites·4 claims
- 1356US4842759AAcicular process for producing particulate materialDAIKIN IND LTD·Filed 1986·Granted Jun 27, 1989·14 cites·5 claims
- 1455US10226730B2Filter medium for air filter, filter pack, air filter unit, and method for producing filter medium for air filterDAIKIN IND LTD·Filed 2015·Granted Mar 12, 2019·0 cites·9 claims
- 1554US10688448B2Porous body, polymer electrolyte membrane, filter material for filter, and filter unitDAIKIN IND LTD·Filed 2014·Granted Jun 23, 2020·0 cites·11 claims
- 1654US2017002156A1Biaxially-stretched porous membraneDAIKIN IND LTD·Filed 2014·Application pending·0 cites
- 1752US2014367325A1Method for Multi-Stage Expansion and Stretching of Film and FilterCHOI KYUNG-JU·Filed 2009·Application pending·0 cites
- 1850US2015200402A1Sheet, electrode and fuel cellDAIKIN IND LTD·Filed 2013·Application pending·0 cites
- 1949US5151206AAcicular iron carbide particulate material and process for producing sameDAIKIN IND LTD·Filed 1989·Granted Sep 29, 1992·10 cites·4 claims
- 2049US4457955AProcess for producing magnetizable particlesDAIKIN IND LTD·Filed 1982·Granted Jul 3, 1984·6 cites·9 claims
- 2149US2021260516A1Air filter medium, filter pack, and air filter unitDAIKIN IND LTD·Filed 2019·Application pending·0 cites
- 2249US2022040614A1Air filter medium, filter pack, air filter unit, and method for producing the sameDAIKIN IND LTD·Filed 2019·Application pending·0 cites
- 2348US8865839B2Polytetrafluoroethylene mixtureSAWADA YASUHIKO·Filed 2011·Granted Oct 21, 2014·0 cites·8 claims
- 2446US10537836B2Filter medium for air filter, filter pack, air filter unit and method for producing the filter medium for air filterDAIKIN IND LTD·Filed 2017·Granted Jan 21, 2020·0 cites·17 claims
- 2545US8937132B2Polytetrafluoroethylene mixtureSAWADA YASUHIKO·Filed 2011·Granted Jan 20, 2015·0 cites·6 claims
- 2645US4900464AParticles containing iron carbideDAIKIN IND LTD·Filed 1986·Granted Feb 13, 1990·6 cites·3 claims
- 2743US5104561AProcess for preparing carbide fine particlesDAIKIN IND LTD·Filed 1990·Granted Apr 14, 1992·7 cites·4 claims
- 2841US5552072ACoated acicular fine particulate materials, processes for preparing same and use thereofDAIKIN IND LTD·Filed 1994·Granted Sep 3, 1996·6 cites·19 claims
- 2938US5205950AProcess for preparing iron carbide fine particlesDAIKIN IND LTD·Filed 1991·Granted Apr 27, 1993·5 cites·14 claims
- 3038US2014165517A1Filter medium for air filter, air filter unit, and method for producing filter medium for air filterHARA SATOSHI·Filed 2012·Application pending·0 cites
- 3131US5660927AAcicular metal iron fine particles, process for preparing same, magnetic coating composition and magnetic recording medium containing sameDAIKIN IND LTD·Filed 1994·Granted Aug 26, 1997·2 cites·17 claims
- 3230US5437805AParticles containing iron carbideDAIKEN IND LTD·Filed 1993·Granted Aug 1, 1995·0 cites·5 claims
- 3330US5346758AMagnetic coating composition and magnetic recording mediumDAIKIN IND LTD·Filed 1986·Granted Sep 13, 1994·0 cites·11 claims
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