- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 43/1185 - Ignition systems
Patent holdings for IPC class E21B 43/1185
Total number of patents in this class: 726
10-year publication summary
56
|
41
|
47
|
58
|
95
|
65
|
98
|
86
|
51
|
26
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Halliburton Energy Services, Inc. | 20165 |
115 |
Hunting Titan, Inc. | 240 |
78 |
DYNAenergetics Europe GmbH | 205 |
73 |
Geodynamics, Inc. | 203 |
48 |
Schlumberger Technology Corporation | 9690 |
45 |
Owen Oil Tools LP | 101 |
35 |
Schlumberger Canada Limited | 6913 |
28 |
Wells Fargo Bank, National Association | 2945 |
28 |
G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen | 61 |
24 |
Services Petroliers Schlumberger | 5426 |
18 |
Schlumberger Technology B.v. | 4951 |
17 |
Baker Hughes Incorporated | 5689 |
15 |
XConnect, LLC | 38 |
14 |
DYNAenergetics GmbH & Co. KG | 44 |
11 |
Expro Americas, LLC | 38 |
9 |
Baker Hughes Holdings LLC | 3060 |
8 |
Weatherford Technology Holdings, LLC | 2135 |
7 |
Harrison Jet Guns II, L.P., Harrison Jet Guns Management Company, L.L.C., a Texas Limited Liability Company | 15 |
7 |
GR Energy Services Management, LP | 31 |
7 |
DYNAenergetics Europe GmbH | 20 |
6 |
Other owners | 133 |