PATRA CO., LTD.
9Patents
8Active
9Granted
45Portfolio score
Filing activity: Nov 9, 1981 → Aug 14, 2023 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4440323A | Device for dispensing metered quantities of fluid from a container | Human Necessities | 29 | Expired |
| USD690523S1 | Office chair | General | 19 | Active |
| US9237811B1 | Chair with improved waist bearing power | Human Necessities | 19 | Active |
| USD980640S1 | Patterned chair | General | 5 | Active |
| USD930380S1 | Chair | General | 2 | Active |
| USD878793S1 | Chair | General | 2 | Active |
| US12042060B2 | Lumbar supporting system of chair and chair having the same | Human Necessities | 0 | Active |
| US11468067B2 | Information storage system for user inquiry-directed recommendations | Physics | 0 | Active |
| USD1077494S1 | Chair | General | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.