Patent holdings for IPC class B01J 31/38

Total number of patents in this class: 247

10-year publication summary

24
20
19
26
22
9
10
9
15
9
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Chevron Phillips Chemical Company LP
1826
20
Braskem America, Inc.
203
11
Univation Technologies, LLC
637
10
LG Chem, Ltd.
17644
8
FUJIFILM Business Innovation Corp.
7637
6
China Petroleum & Chemical Corporation
1908
5
ExxonMobil Chemical Patents Inc.
3976
4
King Faisal University
920
4
Sinopec Yangzi Petrochemical Company Ltd.
19
4
W. R. Grace & Co.-Conn.
298
4
Dow Corning Corporation
960
3
Soochow University
1740
3
Tianjin University
815
3
GM Global Technology Operations LLC
15150
2
Shin-Etsu Chemical Co., Ltd.
5685
2
Saudi Basic Industries Corporation
552
2
Northwestern University
3408
2
AM Technology Limited
15
2
Basell Poliolefine Italia S.r.l.
916
2
Basell Polyolefine GmbH
550
2
Other owners 148