- All sections
- B - Performing operations; transporting
- B28B - Shaping clay or other ceramic compositions; shaping slag; shaping mixtures containing cementitious material, e.g. plaster
- B28B 21/72 - Producing multilayer tubes
Patent holdings for IPC class B28B 21/72
Total number of patents in this class: 26
10-year publication summary
0
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0
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1
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0
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2
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1
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0
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1
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0
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0
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
BASF SE | 19740 |
2 |
Covestro Deutschland AG | 2429 |
2 |
Covestro LLC | 577 |
2 |
Schlumberger Technology Corporation | 9690 |
1 |
Royal Bank of Canada | 1839 |
1 |
The Sherwin-Williams Company | 553 |
1 |
GM Global Technology Operations LLC | 13620 |
1 |
Engineered Polymer Solutions, Inc. (a Delaware corporation) | 160 |
1 |
Lancer Systems L.P. | 12 |
1 |
Nano Precision Medical, Inc. | 34 |
1 |
Novo Plastics Inc. | 11 |
1 |
Pittsburgh Corning Corporation | 7 |
1 |
Rolls-Royce Corporation | 1686 |
1 |
Schlusselbauer, Johann | 6 |
1 |
Soda Club Ltd. | 3 |
1 |
The Valspar Corporation | 166 |
1 |
Valspar Sourcing, Inc. | 370 |
1 |
SWIMC, LLC | 2426 |
1 |
The Sherwin-Williams Headquarters Company | 160 |
1 |
Verescence France | 7 |
1 |
Other owners | 3 |