Assignee
PUREX CO LTD
JP·21 granted patents·2 pending applications·318 citations·filing 1991–2021
Top patents by PatentIndex Score
23 records- 0195US5772738AMultifunctional air filter and air-circulating clean unit with the same incorporated thereinPUREX CO LTD·Filed 1996·Granted Jun 30, 1998·140 cites·11 claims
- 0283US5635463ASilicon wafer cleaning fluid with HN03, HF, HCl, surfactant, and waterPUREX CO LTD·Filed 1995·Granted Jun 3, 1997·60 cites·7 claims
- 0381US11408118B2Cloth clamping chuck and cloth handling devicePUREX CO LTD·Filed 2019·Granted Aug 9, 2022·2 cites·18 claims
- 0477US5350489ATreatment method of cleaning surface of plastic molded itemPUREX CO LTD·Filed 1993·Granted Sep 27, 1994·31 cites·5 claims
- 0573US11066769B2Cloth spreading apparatusPUREX CO LTD·Filed 2018·Granted Jul 20, 2021·1 cites·20 claims
- 0673US10975517B2Cloth spreading apparatusPUREX CO LTD·Filed 2017·Granted Apr 13, 2021·2 cites·4 claims
- 0773US9587348B2Cloths separating devicePUREX CO LTD·Filed 2013·Granted Mar 7, 2017·4 cites·12 claims
- 0871US9752277B2Cloth piece folding devicePUREX CO LTD·Filed 2014·Granted Sep 5, 2017·6 cites·2 claims
- 0966US5681398ASilicone wafer cleaning methodPUREX CO LTD·Filed 1995·Granted Oct 28, 1997·28 cites·12 claims
- 1060US5284802AContainer for semiconductor wafer sample and method of preparing samplePUREX CO LTD·Filed 1991·Granted Feb 8, 1994·33 cites·2 claims
- 1156US10815612B2Cloth spreading devicePUREX CO LTD·Filed 2015·Granted Oct 27, 2020·1 cites·1 claims
- 1249US11359317B2Edge clamping device and automatic cloth spreading machine including the samePUREX CO LTD·Filed 2019·Granted Jun 14, 2022·0 cites·16 claims
- 1348US12264433B2Cloth spreading apparatusPUREX CO LTD·Filed 2021·Granted Apr 1, 2025·0 cites·16 claims
- 1447US11326301B2Automatic cloth spreading machinePUREX CO LTD·Filed 2018·Granted May 10, 2022·0 cites·5 claims
- 1547US10699402B2Fabric type identifying apparatus and fabric type identifying methodPUREX CO LTD·Filed 2016·Granted Jun 30, 2020·0 cites·9 claims
- 1645US2020224348A1Cloth clamping chuck and cloth handling apparatusPUREX CO LTD·Filed 2018·Application pending·0 cites
- 1744US10671871B2Fabric type identifying apparatusPUREX CO LTD·Filed 2016·Granted Jun 2, 2020·0 cites·6 claims
- 1842US11993472B2Cloth transfer apparatusPUREX CO LTD·Filed 2019·Granted May 28, 2024·0 cites·12 claims
- 1942US5643404AMethod for examination of silicon wafer surface defectsPUREX CO LTD·Filed 1995·Granted Jul 1, 1997·9 cites·9 claims
- 2039US11299846B2Cloth spreading devicePUREX CO LTD·Filed 2018·Granted Apr 12, 2022·0 cites·11 claims
- 2131US6059887AProcess for cleaning the interior of semiconductor substratePUREX CO LTD·Filed 1998·Granted May 9, 2000·1 cites·19 claims
- 2230US11091873B2Cloth spreading apparatusPUREX CO LTD·Filed 2018·Granted Aug 17, 2021·0 cites·8 claims
- 2330US2017269003A1Exterior inspection devicePUREX CO LTD·Filed 2015·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →