Pen input device sheet with elastic layer having recessed protruding pattern facing a position detecting device
US-12591318-B2 · Mar 31, 2026 · US
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Ito Masamitsu patents
Ito Masamitsu is listed as an inventor on 74 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Ito Masamitsu |
| Total patents | 74 |
| First publication | Feb 5, 2015 |
| Latest publication | Mar 31, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Position indicator
US-2026063449-A1 · Mar 5, 2026 · US
Method for adjusting resonance frequency of resonance circuit included in electronic pen, electronic pen, and method for manufacturing electronic pen
US-12498807-B2 · Dec 16, 2025 · US
Position indicator
US-12492919-B2 · Dec 9, 2025 · US
Position detection sensor and position detection device
US-2025362762-A1 · Nov 27, 2025 · US
Position detection sensor and position detection device
US-12405679-B2 · Sep 2, 2025 · US
Position detection apparatus configured to detect the positions of multiple position indicators, and position detection method
US-2025258566-A1 · Aug 14, 2025 · US
Electronic pen cartridge and electronic pen
US-12340035-B2 · Jun 24, 2025 · US
Position detection apparatus configured to detect the positions of multiple position indicators, and position detection method
US-12293038-B2 · May 6, 2025 · US
Examination system and terminal apparatus
US-2025068266-A1 · Feb 27, 2025 · US
Recent patents
Latest publications not already listed above.
Method for adjusting resonance frequency of resonance circuit included in electronic pen, electronic pen, and method for manufacturing electronic pen
US-2025004583-A1 · Jan 2, 2025 · US
Communication system and terminal apparatus
US-12169602-B2 · Dec 17, 2024 · US
Pen input device sheet
US-2024411387-A1 · Dec 12, 2024 · US
Electronic pen cartridge and electronic pen
US-2024345668-A1 · Oct 17, 2024 · US
Method for adjusting resonance frequency of resonance circuit included in electronic pen, electronic pen, and method for manufacturing electronic pen
US-12111989-B2 · Oct 8, 2024 · US
Electronic pen cartridge and electronic pen
US-12056297-B2 · Aug 6, 2024 · US
Position indicator
US-2024200985-A1 · Jun 20, 2024 · US
Knock-type electronic pen including first and second position indicators located at different ends of a tubular casing
US-12001618-B2 · Jun 4, 2024 · US
Position indicator
US-11940301-B2 · Mar 26, 2024 · US
Communication system and terminal apparatus
US-2024019945-A1 · Jan 18, 2024 · US
Method for adjusting resonance frequency of resonance circuit included in electronic pen, electronic pen, and method for manufacturing electronic pen
US-2023376133-A1 · Nov 23, 2023 · US
Position detection sensor and position detection device
US-2023332930-A1 · Oct 19, 2023 · US
Cartridge for an electronic pen
US-D1001130-S · Oct 10, 2023 · US
Method for adjusting resonance frequency of resonance circuit included in electronic pen, electronic pen, and method for manufacturing electronic pen
US-11762487-B2 · Sep 19, 2023 · US
Electronic pen cartridge and electronic pen
US-2023280846-A1 · Sep 7, 2023 · US
Position detection sensor and position detection device
US-11725963-B2 · Aug 15, 2023 · US
Electronic pen core body and electronic pen
US-11714498-B2 · Aug 1, 2023 · US
Position detection apparatus configured to detect the positions of multiple position indicators, and position detection method
US-2023205361-A1 · Jun 29, 2023 · US
Position indicator
US-2023204391-A1 · Jun 29, 2023 · US
Electronic pen cartridge and electronic pen
US-11687172-B2 · Jun 27, 2023 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Wacom Co Ltd | 68 |
| Toshiba Memory Corp | 4 |
| Toshiba Kk | 2 |
| Kioxia Corp | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G06F3/03545 | 60 |
| G06F3/046 | 41 |
| G06F3/0383 | 35 |
| G06F3/038 | 17 |
| G06F3/04162 | 12 |