- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F41A - Functional features or details common to both smallarms and ordnance, e.g. cannons; mountings for smallarms or ordnance
- F41A 21/04 - Barrel liners
Patent holdings for IPC class F41A 21/04
Total number of patents in this class: 23
10-year publication summary
|
3
|
4
|
2
|
2
|
7
|
2
|
1
|
4
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Proof Research, Inc. | 34 |
5 |
| Blackpowder Products, Inc. | 39 |
4 |
| The United States of America as represented by the Secretary of the Army | 1179 |
2 |
| Utm Ltd | 14 |
2 |
| American Flowform Products, LLC | 11 |
2 |
| BAE Systems Bofors AB | 200 |
1 |
| Saeilo Enterprises, Inc. | 70 |
1 |
| University of North Texas | 195 |
1 |
| Wilcox Industries Corp. | 128 |
1 |
| Consulting Group of Jocassee, Inc. | 2 |
1 |
| Jbryant Enterprises Inc. | 1 |
1 |
| Utm Liimited | 1 |
1 |
| Erik Schlosser | 1 |
1 |
| Other owners | 0 |