OHKI CO., LTD.
13Patents
11Active
13Granted
47Portfolio score
Filing activity: Jul 30, 2001 → Aug 25, 2020 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8746131B2 | Drip bag | Human Necessities | 27 | Active |
| US7498281B2 | Nonwoven fabric and tea bag | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7235272B2 | Drip bag | Human Necessities | 7 | Expired |
| US8776481B2 | Packing-packaging apparatus | Performing Operations; Transporting | 5 | Active |
| US9650168B2 | Thread material cutting device | Emerging Cross-Sectional Technologies | 2 | Active |
| US9732453B2 | Nonwoven fabric sheet, and extraction filter and extraction bag using the same | Textiles; Paper | 1 | Active |
| US10882688B2 | Sheet material for extraction, extraction filter, and extraction bag | Performing Operations; Transporting | 0 | Active |
| US12161247B2 | Extraction bag | Performing Operations; Transporting | 0 | Active |
| US10906731B2 | Drip bag | Human Necessities | 0 | Active |
| US10246252B2 | Drip bag | Human Necessities | 0 | Active |
| US10548427B2 | Sheet for extraction, extraction filter, and extraction bag | Emerging Cross-Sectional Technologies | 0 | Active |
| US10730692B2 | Drip bag | Human Necessities | 0 | Active |
| US11643270B2 | Extraction bag | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.