Patent holdings for IPC class D21C 9/10

Total number of patents in this class: 446

10-year publication summary

32
42
36
33
35
35
35
27
20
14
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
GP Cellulose GmbH
89
31
Kemira Oyj
1207
21
International Paper Company
790
16
Andritz Oy
282
14
UPM-Kymmene Corporation
937
14
Ecolab USA Inc.
5465
13
Valmet AB
503
13
GPCP IP Holdings LLC
1641
13
GranBio Intellectual Property Holdings, LLC
119
13
BASF SE
20892
11
Suzano S.A.
199
8
Clean Chemistry, Inc.
36
7
Kimberly-clark Worldwide, Inc.
5503
6
Andritz Inc.
333
6
API Intellectual Property Holdings, LLC
77
6
Arkema France
4051
6
Metsa Fibre Oy
35
6
Novozymes A/S
3320
5
Buckman Laboratories International, Inc.
235
5
Metsa Board Oyj
53
5
Other owners 227