Patent holdings for IPC class C07C 33/22

Total number of patents in this class: 94

10-year publication summary

4
9
5
7
3
7
3
1
3
0
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Takasago International Corporation
403
18
Sumitomo Chemical Company, Limited
9015
3
Kaneka Corporation
4654
3
Wanhua Chemical Group Co., Ltd.
374
3
DSM IP Assets B.V.
5422
2
Dalian University of Technology
1579
2
Kuraray Co., Ltd.
3581
2
National University Corporation Nagoya University
795
2
Sun Yat-sen University
721
2
The Procter & Gamble Company
21919
1
BASF SE
21165
1
Shell Internationale Research Maatschappij B.V.
3437
1
AstraZeneca AB
2830
1
Syngenta Participations AG
1568
1
Syngenta Limited
435
1
Showa Denko K.K.
2090
1
Axel Plastics Research Laboratories Inc.
22
1
BIAL - Portela & CA, S.A.
213
1
Central Glass Company, Limited
1289
1
Changchun Institute of Applied Chemistry Chinese Academy of Sciences
111
1
Other owners 46