- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; rotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 2/00 - Rotary-piston machines or pumps
Patent holdings for IPC class F04C 2/00
Total number of patents in this class: 841
10-year publication summary
95
|
70
|
80
|
65
|
64
|
45
|
41
|
25
|
23
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
LG Electronics Inc. | 69257 |
67 |
Copeland LP | 656 |
51 |
Daikin Industries, Ltd. | 9495 |
23 |
Hamilton Sundstrand Corporation | 4525 |
16 |
Hitachi Astemo, Ltd. | 5618 |
16 |
Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
15 |
Mitsubishi Electric Corporation | 43934 |
13 |
Bitzer Kuehlmaschinenbau GmbH | 140 |
13 |
Robert Bosch GmbH | 40953 |
11 |
Schwabische Huttenwerke Automotive GmbH | 68 |
11 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
10 |
Edwards Limited | 764 |
10 |
Hitachi-johnson Controls Air Conditioning, Inc. | 499 |
10 |
Hanon Systems EFP Canada Ltd. | 65 |
10 |
Denso Corporation | 23338 |
9 |
KYB Corporation | 1278 |
9 |
GM Global Technology Operations LLC | 13620 |
8 |
CIRCOR Pumps North America, LLC | 32 |
8 |
Hanon Systems EFP Deutschland GmbH | 79 |
8 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
7 |
Other owners | 516 |