- All sections
- B - Performing operations; transporting
- B31B - Making containers of paper, cardboard or material worked in a manner analogous to paper
- B31B 70/81 - Forming or attaching accessories, e.g. opening devices, closures or tear strings
Patent holdings for IPC class B31B 70/81
Total number of patents in this class: 176
10-year publication summary
|
7
|
8
|
28
|
28
|
27
|
23
|
20
|
23
|
23
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Unitech Co., Ltd. | 199 |
22 |
| Illinois Tool Works Inc. | 11152 |
12 |
| CMD Corporation | 69 |
8 |
| Reynolds Presto Products Inc. | 189 |
8 |
| Poly-America, L.P., Poly-America GP, LLC, a Texas Limited Liability Company | 191 |
7 |
| The Glad Products Company | 542 |
6 |
| Totani Corporation | 121 |
6 |
| Kellogg Company | 282 |
5 |
| Sonoco Development, Inc. | 776 |
5 |
| Rezip Co. | 11 |
5 |
| S. C. Johnson & Son, Inc. | 2869 |
4 |
| Nike, Inc. | 13075 |
4 |
| Innoflex Incorporated | 25 |
4 |
| Fuji Seal International, Inc. | 289 |
3 |
| Holweg Group | 21 |
3 |
| Hosokawa Yoko Co., Ltd. | 132 |
3 |
| Polytex Fibers Corporation | 29 |
3 |
| Starlinger & Co Gesellschaft m.b.H. | 102 |
3 |
| Graphic Packaging International, LLC | 1364 |
3 |
| Frito-Lay North America, Inc. | 1350 |
2 |
| Other owners | 60 |