- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16L - Pipesjoints or fittings for pipessupports for pipes, cables or protective tubingmeans for thermal insulation in general
- F16L 21/03 - Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
Patent holdings for IPC class F16L 21/03
Total number of patents in this class: 301
10-year publication summary
|
27
|
40
|
35
|
23
|
43
|
22
|
16
|
15
|
21
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| S & B Technical Products, Inc. | 87 |
22 |
| Mueller International, LLC | 744 |
12 |
| Nibco Inc. | 238 |
12 |
| Kubota Corporation | 4437 |
11 |
| Victaulic Company | 625 |
11 |
| ASC Engineered Solutions, LLC | 334 |
8 |
| Krausz Industries Ltd. | 65 |
7 |
| Trelleborg Pipe Seals Lelystad BV | 20 |
6 |
| Pipes & Fittings EQOfluids S.L. | 12 |
6 |
| Saint-Gobain Pam | 65 |
4 |
| United States Pipe and Foundry Company,LLC | 85 |
4 |
| Eaton Intelligent Power Limited | 6291 |
4 |
| Hultec Acquisition, LLC | 21 |
4 |
| Flexsteel USA, LLC | 173 |
4 |
| American Cast Iron Pipe Company | 41 |
3 |
| Jung Woo Metal Ind. Co., Ltd. | 10 |
3 |
| NORMA Germany GmbH | 251 |
3 |
| Press-seal Corporation | 44 |
3 |
| SICA S.p.A. | 78 |
3 |
| Steere Enterprises, Inc. | 16 |
3 |
| Other owners | 168 |