Assignee
NIKKI-UNIVERSAL CO LTD
JP·20 granted patents·6 pending applications·260 citations·filing 1977–2020
Top patents by PatentIndex Score
26 records- 0184US4871709AOzone cracking catalystNIKKI UNIVERSAL CO LTD·Filed 1988·Granted Oct 3, 1989·44 cites·12 claims
- 0277US6730144B2Air purifying filter using modified enzymesNIKKI UNIVERSAL CO LTD·Filed 2001·Granted May 4, 2004·19 cites·33 claims
- 0373US7727923B2Catalyst for exhaust gas purification and method for exhaust gas purificationNIKKI UNIVERSAL CO LTD·Filed 2005·Granted Jun 1, 2010·4 cites·8 claims
- 0473US4613585AProcess of preparing alumina for use in catalyst carrierNIKKI UNIVERSAL CO LTD·Filed 1984·Granted Sep 23, 1986·19 cites·5 claims
- 0569US5447701AGas purification methodNIKKI UNIVERSAL CO LTD·Filed 1993·Granted Sep 5, 1995·24 cites·14 claims
- 0667US6579352B1Air cleaning filterNIKKI UNIVERSAL CO LTD·Filed 1997·Granted Jun 17, 2003·35 cites·46 claims
- 0765US4108971AMethod of manufacture of spherical alumina particlesNIKKI UNIVERSAL CO LTD·Filed 1977·Granted Aug 22, 1978·17 cites·5 claims
- 0863US4301033AHigh apparent bulk density gamma alumina carrier and method of manufacture of sameNIKKI UNIVERSAL CO LTD·Filed 1979·Granted Nov 17, 1981·18 cites·4 claims
- 0958US4615999AMethod for preparing hydrodesulfurization catalystNIKKI UNIVERSAL CO LTD·Filed 1985·Granted Oct 7, 1986·16 cites·2 claims
- 1058US4399119AManufacture of spherical alumina from gibbsiteNIKKI UNIVERSAL CO LTD·Filed 1981·Granted Aug 16, 1983·10 cites·10 claims
- 1156US11911747B2Catalyst for ammonia decomposition and exhaust gas treatment methodNIKKI UNIVERSAL CO LTD·Filed 2019·Granted Feb 27, 2024·0 cites·6 claims
- 1255US5484756AHydrodesulfurization catalyst and preparation thereofNIKKI UNIVERSAL CO LTD·Filed 1993·Granted Jan 16, 1996·18 cites·11 claims
- 1351US5236878AZeolite-containing adsorptive composition and adsorptive decomposition composition containing such zeolite-containing compositionNIKKI UNIVERSAL CO LTD·Filed 1991·Granted Aug 17, 1993·14 cites·7 claims
- 1451US2023040547A1Deodorizing catalyst, slurry for forming deodorizing catalyst, deodorizing catalyst structure, method for producing deodorizing catalyst structure and deodorization methodNIKKI UNIVERSAL CO LTD·Filed 2019·Application pending·0 cites
- 1549US4309312AManufacture of spherical alumina from gibbsiteNIKKI UNIVERSAL CO LTD·Filed 1979·Granted Jan 5, 1982·5 cites·5 claims
- 1645US11642660B2Purification catalyst for interior of polymer film production furnace and purification method for interior of polymer film production furnaceNIKKI UNIVERSAL CO LTD·Filed 2020·Granted May 9, 2023·0 cites·7 claims
- 1741US5302558APorous sepiolite, process for producing same and adsorptive decomposition catalyst composition utilizing such porous sepioliteNIKKI UNIVERSAL CO LTD·Filed 1991·Granted Apr 12, 1994·6 cites·3 claims
- 1841US2018304239A1Purification catalyst for interior of polymer film production furnace and purification method for interior of polymer film production furnaceNIKKI UNIVERSAL CO LTD·Filed 2016·Application pending·0 cites
- 1941US2015321185A1Exhaust gas purification catalyst with high resistance to silicon poisoningNIKKI UNIVERSAL CO LTD·Filed 2013·Application pending·0 cites
- 2041US2016339387A1Ammonia decomposition catalystNIKKI-UNIVERSAL CO LTD·Filed 2014·Application pending·0 cites
- 2140US2022062483A1Air purification filter and method of producing the sameNIKKI UNIVERSAL CO LTD·Filed 2020·Application pending·0 cites
- 2239US12128339B2Filtering material for air filters and method for manufacturing filtering material for air filtersNIKKI UNIVERSAL CO LTD·Filed 2019·Granted Oct 29, 2024·0 cites·4 claims
- 2339US5397752AProduction of water resisting, hard, porous metasepioliteNIKKI UNIVERSAL CO LTD·Filed 1993·Granted Mar 14, 1995·5 cites·8 claims
- 2434US2011268242A1Hydrogen and Oxygen Recombination Catalyst, Recombination Apparatus, and Nuclear PlantNIKKI UNIVERSAL CO LTD·Filed 2011·Application pending·0 cites
- 2532US5399538APorous sepiolite, process for producing same and adsorptive decomposition catalyst compostion utilizing such porous sepioliteNIKKI UNIVERSAL CO LTD·Filed 1993·Granted Mar 21, 1995·2 cites·2 claims
- 2625US6524535B1Adsorption, decomposition deodorization elementNIKKI UNIVERSAL CO LTD·Filed 1998·Granted Feb 25, 2003·4 cites·20 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →