Oil supply device for compressor, compressor, and refrigeration equipment
US-12546301-B2 · Feb 10, 2026 · US
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Qi Feifei patents
Qi Feifei is listed as an inventor on 37 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Qi Feifei |
| Total patents | 37 |
| First publication | Aug 24, 2017 |
| Latest publication | Feb 10, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Oil supply device for compressor, compressor, and refrigeration equipment
US-12448959-B2 · Oct 21, 2025 · US
Control method for refrigerating and freezing device, and refrigerating and freezing device
US-12398951-B2 · Aug 26, 2025 · US
Oil supply device for compressor, compressor, and refrigeration equipment
US-2025052235-A1 · Feb 13, 2025 · US
Oil supply device for compressor, compressor, and refrigeration equipment
US-2025052236-A1 · Feb 13, 2025 · US
Control method for heating unit, heating unit, and refrigerating and freezing apparatus
US-2023345591-A1 · Oct 26, 2023 · US
Method for controlling temperature of refrigerator, and refrigerator
US-2023332818-A1 · Oct 19, 2023 · US
Control method for refrigerating and freezing device, and refrigerating and freezing device
US-2023243584-A1 · Aug 3, 2023 · US
Method for simultaneously determining fat-soluble vitamins and carotenoids in serum
US-11460451-B2 · Oct 4, 2022 · US
Method for simultaneously determining fat-soluble vitamins and carotenoids in serum
US-2021190733-A1 · Jun 24, 2021 · US
Recent patents
Latest publications not already listed above.
Refrigerator adopting linear compressor and control method thereof
US-10969150-B2 · Apr 6, 2021 · US
Refrigeration control method for refrigerator and refrigerator
US-10782066-B2 · Sep 22, 2020 · US
Refrigerator control method and system with inverter compressor
US-10739066-B2 · Aug 11, 2020 · US
Refrigerator
US-10684058-B2 · Jun 16, 2020 · US
Refrigerator controlling method and system with linear compressor
US-10655908-B2 · May 19, 2020 · US
Bent pipe with retention member and semiconductor refrigerator having same
US-10612822-B2 · Apr 7, 2020 · US
Refrigerator control method and system using linear compressor
US-10591196-B2 · Mar 17, 2020 · US
Sintered heat tube and semiconductor cooling refrigerator provided with same
US-10539356-B2 · Jan 21, 2020 · US
Refrigeration control method for refrigerator and refrigerator
US-2019242643-A1 · Aug 8, 2019 · US
Freezing and refrigerating device and defrosting control method thereof
US-10247466-B2 · Apr 2, 2019 · US
Semiconductor refrigerator
US-10222114-B2 · Mar 5, 2019 · US
Cold end heat exchanging device and semiconductor refrigerator
US-10197309-B2 · Feb 5, 2019 · US
Refrigerator
US-10126038-B2 · Nov 13, 2018 · US
Refrigerator adopting linear compressor and control method thereof
US-2018306477-A1 · Oct 25, 2018 · US
Refrigerator control method and system with inverter compressor
US-2018266755-A1 · Sep 20, 2018 · US
Refrigerator Control Method and System Using Linear Compressor
US-2018216861-A1 · Aug 2, 2018 · US
Bent pipe and semiconductor refrigeration refrigerator with bent pipe
US-2018023864-A1 · Jan 25, 2018 · US
Refrigerator
US-2018017312-A1 · Jan 18, 2018 · US
Refrigerator controlling method and system with linear compressor
US-2018010847-A1 · Jan 11, 2018 · US
Refrigerator
US-2018010842-A1 · Jan 11, 2018 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Qingdao Haier Joint Stock Co Ltd | 28 |
| Qingdao haier refrigerator co ltd | 12 |
| Haier Smart Home Co Ltd | 8 |
| Univ Xi An Jiaotong | 2 |
| Chongqing Haier Refrigeration Electric Appliance Co Ltd | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| F25D11/00 | 11 |
| F25D29/00 | 11 |
| F25B21/02 | 9 |
| F25D2700/12 | 9 |
| F25D19/00 | 8 |