- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16L - Pipes; joints or fittings for pipes; supports for pipes, cables or protective tubing; means for thermal insulation in general
- F16L 21/035 - 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 around the spigot end before connection
Patent holdings for IPC class F16L 21/035
Total number of patents in this class: 132
10-year publication summary
|
29
|
14
|
18
|
12
|
15
|
10
|
8
|
7
|
7
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Poulton Technologies Limited | 14 |
4 |
| Airbus Operations Limited | 1157 |
3 |
| Advanced Drainage Systems, Inc. | 304 |
3 |
| Dionex Softron GmbH | 110 |
3 |
| Pegler Yorkshire Group Limited | 11 |
3 |
| Victaulic Company | 664 |
3 |
| Hultec Acquisition, LLC | 21 |
3 |
| Pratt & Whitney Canada Corp. | 4215 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| Caterpillar Inc. | 8877 |
2 |
| Weatherford Technology Holdings, LLC | 2135 |
2 |
| Carl Freudenberg KG | 1346 |
2 |
| Langdon Incorporated | 10 |
2 |
| Lindab AB | 123 |
2 |
| North American Pipe Corporation | 48 |
2 |
| Press-seal Corporation | 38 |
2 |
| Saint-Gobain Pam | 102 |
2 |
| SDB IP Holdings, LLC | 124 |
2 |
| Trelleborg Forsheda Building AB | 4 |
2 |
| WABCO GmbH | 483 |
2 |
| Other owners | 84 |