Prosecution Insights
Last updated: April 19, 2026

Sumco Corporation

8 pending office actions

Portfolio Summary

8
Total Pending OAs
3
Final Rejections
5
Non-Final OAs

Pending Office Actions

App #TitleExaminerArt UnitStatusFiled
18570231 POLISHING HEAD, POLISHING DEVICE, AND METHOD OF MANUFACTURING SEMICONDUCTOR WAFER SHUM, KENT N 3723 Non-Final OA Dec 14, 2023
18568469 DOUBLE-SIDE POLISHING METHOD FOR WORK AND DOUBLE-SIDE POLISHING APPARATUS FOR WORK SHUM, KENT N 3723 Non-Final OA Dec 08, 2023
18290514 QUARTZ GLASS CRUCIBLE, MANUFACTURING METHOD THEREOF, AND MANUFACTURING METHOD OF SILICON SINGLE CRYSTAL QI, HUA 1714 Non-Final OA Nov 14, 2023
18237001 METHOD OF MANUFACTURING MONOCRYSTALLINE SILICON QI, HUA 1714 Non-Final OA Aug 23, 2023
18036988 METHOD OF ESTIMATING OXYGEN CONCENTRATION IN SILICON SINGLE CRYSTAL, METHOD OF MANUFACTURING SILICON SINGLE CRYSTAL, AND SILICON SINGLE CRYSTAL MANUFACTURING APPARATAUS QI, HUA 1714 Non-Final OA May 15, 2023
18314973 SILICON WAFER AND EPITAXIAL SILICON WAFER CHEN, DAVID Z 2815 Final Rejection May 10, 2023
17979879 SILICON WAFER AND EPITAXIAL SILICON WAFER CRAMER, HALEE PAIGE 2891 Final Rejection Nov 03, 2022
17996737 SINGLE CRYSTAL PRODUCTION APPARATUS AND SINGLE CRYSTAL PRODUCTION METHOD QI, HUA 1714 Final Rejection Oct 20, 2022

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