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Intellectual property

18 granted patents

Our in-house engineering is supported by 18 patents granted by the China National Intellectual Property Administration: 4 invention patents and 14 utility models. They cover tooling and forming, inspection, automation and system control, supporting consistent manufacturing for our customers.

18
Granted patents
4
Invention patents
10
Tooling patents
2020—2025
Grant years
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— OVERVIEW

Four areas of engineering development

Our patent portfolio reflects where we invest: 10 tooling patents support in-house die development, 4 inspection patents support process quality control, and 3 automation patents support consistent production. A further patent covers system control.

18
Granted patentsChina National Intellectual Property Administration
4
Invention patents20-year term from filing
14
Utility models10-year term from filing
10
Tooling structuresOur largest patent category

Tooling & forming

In-house die development 10 patents

Patented structures for compound forming, non-marking bending, angled piercing and stripping, and die-insert extraction.

01
Compound die structure for simultaneous reverse flanging and undercut bending
Patent no. ZL 2022 2 0163847.1
Publication no. CN 216881323 U
Filed 2022.01.21 · Granted 2022.07.05
Utility model
02
Die structure for producing air-conditioning outlet grilles
Patent no. ZL 2021 2 0667724.7
Publication no. CN 217070388 U
Filed 2021.04.01 · Granted 2022.07.29
Utility model
03
Compound forming structure for a stamping die
Patent no. ZL 2022 2 0164444.9
Publication no. CN 217095146 U
Filed 2022.01.21 · Granted 2022.08.02
Utility model
04
Vertical die-insert extraction device without lateral force
Patent no. ZL 2023 2 0715444.8
Publication no. CN 219217248 U
Filed 2023.04.04 · Granted 2023.06.20
Utility model
05
Stamping die that converts axial motion into radial piercing
Patent no. ZL 2023 2 0715452.2
Publication no. CN 219378656 U
Filed 2023.04.04 · Granted 2023.07.21
Utility model
06
Rigid stripping structure for angled piercing of thick plate in a stamping die
Patent no. ZL 2023 2 0715447.1
Publication no. CN 219378655 U
Filed 2023.04.04 · Granted 2023.07.21
Utility model
07
Double-fold hemming die for air-conditioning panels
Patent no. ZL 2023 2 0715443.3
Publication no. CN 220127381 U
Filed 2023.04.04 · Granted 2023.12.05
Utility model
08
Metal bending die with a movable roller module
Patent no. ZL 2024 2 1827739.5
Publication no. CN 222830417 U
Filed 2024.07.31 · Granted 2025.05.06
Utility model
09
Guided multifunctional non-marking bending structure for a metal die
Patent no. ZL 2024 2 1827737.6
Publication no. CN 222830524 U
Filed 2024.07.31 · Granted 2025.05.06
Utility model
10
Bending die with a synchronised rocker mechanism
Patent no. ZL 2024 2 1827741.2
Publication no. CN 222842885 U
Filed 2024.07.31 · Granted 2025.05.09
Utility model

Inspection & measurement

Process quality 04 patents

Quality control built into production equipment: automated in-line checks of internal diameter, roundness, material thickness, shell length and hole position.

11
Automatic internal-diameter measurement system for a compressor shell production line
Patent no. ZL 2018 1 1267530.7
Publication no. CN 109163693 B
Filed 2018.10.29 · Granted 2024.11.12
Invention patent
12
Rapid measurement workstation for internal diameter, roundness and wall thickness
Patent no. ZL 2022 2 0164544.1
Publication no. CN 216745965 U
Filed 2022.01.21 · Granted 2022.06.14
Utility model
13
Shell-length inspection fixture
Patent no. ZL 2023 2 1595063.7
Publication no. CN 220018437 U
Filed 2023.06.21 · Granted 2023.11.14
Utility model
14
Automatic hole-position inspection device for air-conditioning motor brackets
Patent no. ZL 2024 2 1827736.1
Publication no. CN 222849941 U
Filed 2024.07.31 · Granted 2025.05.09
Utility model

Production automation

Continuous production 03 patents

Automatic part release and feeding, in-line chain cleaning and post-forming surface treatment help keep production lines running.

15
Post-forming surface-treatment machine for air-conditioning compressor components
Patent no. ZL 2019 1 1214082.9
Publication no. CN 110871386 B
Filed 2019.12.02 · Granted 2021.04.13
Invention patent
16
Automatic part-release and feeding system for a stamping die
Patent no. ZL 2021 1 0851153.7
Publication no. CN 113477824 B
Filed 2021.07.27 · Granted 2023.03.28
Invention patent
17
In-line cleaning device for a crawler-type chain
Patent no. ZL 2022 2 0164391.0
Publication no. CN 217296127 U
Filed 2022.01.21 · Granted 2022.08.26
Utility model

System control

Air-conditioning systems 01 patent

System-level technology for air-conditioning equipment.

18
Oil-return control system for air-conditioning refrigeration
Patent no. ZL 2018 1 0491176.X
Publication no. CN 108645081 B
Filed 2018.05.21 · Granted 2020.11.24
Invention patent
Verification: These patents can be checked by patent number or grant publication number through the China National Intellectual Property Administration patent enquiry system at cpquery.cnipa.gov.cn. Scanned certificates and patent register extracts are available for customer audits, supplier qualification and tender requirements.

Patent terms: Terms run from the filing date: 20 years for invention patents and 10 years for utility models. The listed grants are within these terms.

English titles: Titles are translated for reference. Please use the patent identifiers to consult the original Chinese records.

Work with in-house tooling expertise

From design-for-manufacture review and tooling development to production delivery, our engineering team can assess your drawings and prepare a process proposal and quotation.

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