- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16B - Devices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedgesjoints or jointing
- F16B 23/00 - Specially-shaped heads of bolts or screws for rotations by a tool
Patent holdings for IPC class F16B 23/00
Total number of patents in this class: 565
10-year publication summary
|
53
|
53
|
65
|
63
|
58
|
55
|
55
|
47
|
36
|
20
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Phillips Screw Company | 92 |
18 |
| Illinois Tool Works Inc. | 11409 |
14 |
| Acument Intellectual Properties, LLC | 134 |
14 |
| MacLean-Fogg Company | 101 |
10 |
| INFASTECH Intellectual Properties Pte. Ltd. | 71 |
10 |
| Grip Holdings, LLC | 118 |
9 |
| McGard LLC | 49 |
9 |
| Kwantex Research Inc. | 32 |
7 |
| Mathread Inc. | 42 |
7 |
| Ttapdrive AS | 14 |
7 |
| Bryce Fastener Company, Inc. | 13 |
6 |
| Physical Systems, Inc. | 41 |
6 |
| Howmet Aerospace Inc. | 379 |
6 |
| The Boeing Company | 20025 |
5 |
| Fontana Fasteners R.D. S.r.l. | 19 |
5 |
| LISI Aerospace | 128 |
5 |
| The Hillman Group, Inc. | 395 |
4 |
| Mueller International, LLC | 716 |
4 |
| Nitto Seiko Co., Ltd. | 64 |
4 |
| Sheh Fung Screws Co., Ltd. | 7 |
4 |
| Other owners | 411 |