Patent Theme
Droplet Ejection Diagnostics
Technologies for precisely controlling the timing and volume of liquid droplet ejection, and for real-time or post-ejection monitoring of droplet trajectory, velocity, and nozzle health to maintain print accuracy and quality.
4,738 US filings from 654 companies since 2023 · 2023: 1,211 · 2024: 1,470 · 2025: 1,404 · 2026 YTD: 653
Printers & Typewriters
Top companies
Ranked by filings in this theme since 2023. 2026 is partial.
| # | Company | Since 2023 | 2023 | 2024 | 2025 | 2026 YTD | YoY |
|---|
| 1 | Seiko Epson Corporation | 1,208 | 285 | 357 | 380 | 186 | +6.4% |
| 2 | CANON KABUSHIKI KAISHA | 795 | 179 | 234 | 239 | 143 | +2.1% |
| 3 | BROTHER KOGYO KABUSHIKI KAISHA | 273 | 86 | 89 | 65 | 33 | -27.0% |
| 4 | Ricoh Company, Ltd. | 240 | 68 | 77 | 66 | 29 | -14.3% |
| 5 | HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. | 173 | 85 | 50 | 33 | 5 | -34.0% |
| 6 | KYOCERA Document Solutions Inc. | 142 | 27 | 48 | 42 | 25 | -12.5% |
| 7 | HITACHI HIGH-TECH CORPORATION | 59 | 13 | 22 | 16 | 8 | -27.3% |
| 8 | Konica Minolta, Inc. | 59 | 14 | 17 | 25 | 3 | +47.1% |
| 9 | KYOCERA CORPORATION | 56 | 9 | 21 | 21 | 5 | 0.0% |
| 10 | SII PRINTEK INC. | 46 | 13 | 19 | 10 | 4 | -47.4% |
| 11 | Xerox Corporation | 45 | 16 | 16 | 7 | 6 | -56.2% |
| 12 | SCREEN Holdings Co., Ltd. | 45 | 7 | 10 | 22 | 6 | +120.0% |
| 13 | SEMES CO., LTD. | 42 | 13 | 15 | 9 | 5 | -40.0% |
| 14 | TOSHIBA TEC KABUSHIKI KAISHA | 42 | 20 | 21 | 1 | · | -95.2% |
| 15 | RISO Technologies Corporation | 40 | · | 2 | 22 | 16 | +1000.0% |
| 16 | Samsung Display Co., Ltd. | 39 | 7 | 10 | 15 | 7 | +50.0% |
| 17 | Funai Electric Co., Ltd. | 36 | 13 | 19 | 4 | · | -78.9% |
| 18 | SHIMADZU CORPORATION | 35 | 6 | 17 | 6 | 6 | -64.7% |
| 19 | Kateeva, Inc. | 28 | 8 | 10 | 9 | 1 | -10.0% |
| 20 | Canon Production Printing Holding B.V. | 27 | 9 | 6 | 9 | 3 | +50.0% |
| 21 | FUJIFILM CORPORATION | 25 | 3 | 9 | 9 | 4 | 0.0% |
| 22 | SONY GROUP CORPORATION | 22 | 3 | 7 | 8 | 4 | +14.3% |
| 23 | Xaar Technology Limited | 15 | 4 | 6 | 4 | 1 | -33.3% |
| 24 | FUJIFILM DIMATIX, INC. | 13 | 3 | 5 | 5 | · | 0.0% |
| 25 | KEYENCE CORPORATION | 13 | · | 2 | 7 | 4 | +250.0% |