Patent holdings for IPC class G01N 21/31

Total number of patents in this class: 2771

10-year publication summary

91
176
162
215
244
260
294
328
287
316
2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

Principal owners for this class

Owner
All patents
This class
Halliburton Energy Services, Inc.
21179
127
Shimadzu Corporation
5033
22
Schlumberger Technology Corporation
9050
21
Samsung Electronics Co., Ltd.
112170
19
General Electric Company
27644
19
Koninklijke Philips N.V.
21110
18
Panasonic Intellectual Property Management Co., Ltd.
22812
16
Siemens Healthcare Diagnostics Inc.
1742
16
Siemens AG
27959
14
Sony Corporation
42563
14
Robert Bosch GmbH
39033
14
SpectraSensors, Inc.
91
14
Ethicon, LLC
1368
14
Canon Inc.
37974
13
3m Innovative Properties Company
21765
12
Altria Client Services LLC
1297
12
Schlumberger Canada Limited
7987
11
Honeywell International Inc.
15167
11
Becton, Dickinson and Company
6088
11
Dräger Safety AG & Co. KGaA
374
11
Other owners 2362