- All sections
- A - Human necessities
- A47C - Chairssofasbeds
- A47C 7/28 - Seat parts with tensioned springs, e.g. of flat type
Patent holdings for IPC class A47C 7/28
Total number of patents in this class: 171
10-year publication summary
|
9
|
16
|
16
|
14
|
15
|
28
|
21
|
13
|
13
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Steelcase Inc. | 1335 |
22 |
| MillerKnoll, Inc. | 524 |
18 |
| Illinois Tool Works Inc. | 11523 |
17 |
| Delta Kogyo Co., Ltd. | 139 |
6 |
| Delta Tooling Co., Ltd. | 150 |
4 |
| Grammer AG | 411 |
4 |
| TS Tech Co., Ltd. | 1496 |
4 |
| Dv8 ID S.r.l. | 10 |
4 |
| PR Sella B.V. | 12 |
3 |
| The Lovesac Company | 211 |
3 |
| Tinke 7 MEI BV | 3 |
3 |
| Agio International Company, Limited | 28 |
2 |
| Formway Furniture Limited | 74 |
2 |
| Franklin Products, Inc. | 20 |
2 |
| Hans Voorwinde Beheer B.V. | 3 |
2 |
| HNI Technologies Inc. | 298 |
2 |
| Knoll, Inc. | 368 |
2 |
| L & P Property Management Company | 932 |
2 |
| Okamura Corporation | 503 |
2 |
| Adient US LLC | 438 |
2 |
| Other owners | 65 |