- 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 33/129 - Packers; Plugs with mechanical slips for hooking into the casing
Patent holdings for IPC class E21B 33/129
Total number of patents in this class: 996
10-year publication summary
98
|
112
|
94
|
114
|
112
|
100
|
104
|
98
|
72
|
25
|
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 |
154 |
Weatherford Technology Holdings, LLC | 2135 |
65 |
Schlumberger Technology Corporation | 9690 |
48 |
The Wellboss Company, LLC | 96 |
48 |
Baker Hughes, a GE Company, LLC | 2171 |
36 |
Nine Downhole Technologies, LLC | 72 |
34 |
Baker Hughes Oilfield Operations, LLC | 1885 |
34 |
Baker Hughes Holdings LLC | 3060 |
33 |
Baker Hughes Incorporated | 5689 |
32 |
Schlumberger Canada Limited | 6913 |
25 |
Innovex Downhole Solutions, Inc. | 182 |
25 |
Saudi Arabian Oil Company | 11322 |
20 |
Schlumberger Technology B.v. | 4951 |
19 |
Services Petroliers Schlumberger | 5426 |
19 |
Vertice Oil Tools Inc. | 87 |
13 |
CNPC USA Corp. | 109 |
11 |
G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen | 61 |
11 |
Exacta-Frac Energy Services, Inc. | 56 |
11 |
PetroQuip Energy Services, LLP | 18 |
9 |
Vertice Oil Tools | 37 |
9 |
Other owners | 340 |