CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.

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Changzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Optical path structure and laser light projector using optical path...
- Patent number 12,068,570
- Issue date Aug 20, 2024
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd.
- Ou Zhang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Infrared temperature measurement device
- Patent number D992434
- Issue date Jul 18, 2023
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd.
- Ou Zhang
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Laser measuring system
- Patent number 11,486,790
- Issue date Nov 1, 2022
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.
- Ou Zhang
- G01 - MEASURING TESTING
Information Patent Grant
Laser point projecting device
- Patent number 11,333,958
- Issue date May 17, 2022
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.
- Ou Zhang
- F21 - LIGHTING
Information Patent Grant
Adjusting mechanism and laser collimator having the same
- Patent number 9,952,402
- Issue date Apr 24, 2018
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd.
- Ou Zhang
- G02 - OPTICS
Information Patent Grant
Cross line laser
- Patent number 9,316,498
- Issue date Apr 19, 2016
- Changzhou Huada Kejie Opto-Electro Instrument Co., LTD.
- Ou Zhang
- G01 - MEASURING TESTING
Information Patent Grant
Automatically tracking precise layout laser tool
- Patent number D699768
- Issue date Feb 18, 2014
- Changzhou Huada Kejie Opto-electro Instrument Co. Ltd.
- Ou Zhang
- D15 - Machines not elsewhere specified

Patents Applicationslast 30 patents

Information Patent Application
CONSTRUCTION SURFACE FLATNESS DETECTOR
- Publication number 20240295396
- Publication date Sep 5, 2024
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT
- Ou ZHANG
- G01 - MEASURING TESTING
Information Patent Application
A LASER DIODE CONTROL METHOD AND CONTROL SYSTEM, AND A LASER DEVICE
- Publication number 20240235153
- Publication date Jul 11, 2024
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou ZHANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LASER SURVEYING SYSTEM FOR SETTING OUT
- Publication number 20240210540
- Publication date Jun 27, 2024
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT
- Ou ZHANG
- G01 - MEASURING TESTING
Information Patent Application
A LASER RECEIVING DEVICE
- Publication number 20240142579
- Publication date May 2, 2024
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou ZHANG
- G01 - MEASURING TESTING
Information Patent Application
A LASER DIODE CONTROL METHOD AND CONTROL SYSTEM, AND A LASER DEVICE
- Publication number 20240136789
- Publication date Apr 25, 2024
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou ZHANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL SYSTEM OF LASER MARKING INSTRUMENT AND LASER MARKING INSTRU...
- Publication number 20220146844
- Publication date May 12, 2022
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.
- Ou Zhang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL PATH STRUCTURE AND LASER LIGHT PROJECTOR USING OPTICAL PATH...
- Publication number 20220140562
- Publication date May 5, 2022
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.
- Ou Zhang
- G02 - OPTICS
Information Patent Application
MEASURING TOOL
- Publication number 20210190948
- Publication date Jun 24, 2021
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.
- Ou ZHANG
- G01 - MEASURING TESTING
Information Patent Application
LASER MEASURING SYSTEM
- Publication number 20210080346
- Publication date Mar 18, 2021
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou ZHANG
- G02 - OPTICS
Information Patent Application
LASER POINT PROJECTING DEVICE
- Publication number 20200192207
- Publication date Jun 18, 2020
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou ZHANG
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LASER LEVEL RULER
- Publication number 20190162536
- Publication date May 30, 2019
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou ZHANG
- G01 - MEASURING TESTING
Information Patent Application
A LASER CONTROL CIRCUIT, CONTROL METHOD AND LASER INK LINE DEVICE W...
- Publication number 20170149208
- Publication date May 25, 2017
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou ZHANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Adjusting Mechanism and Laser Collimator Having the Same
- Publication number 20160103295
- Publication date Apr 14, 2016
- Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd
- Ou Zhang
- G02 - OPTICS
Information Patent Application
LASER MODULE CONTROL CIRCUIT
- Publication number 20150340839
- Publication date Nov 26, 2015
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.
- Ou Zhang
- H01 - BASIC ELECTRIC ELEMENTS

Trademarklast 30 trademarks

Information Trademark
90763313 - HDOEI KEEP DOING LEVEL BEST
- Serial number 90763313
- Filing date Jun 9, 2021
- CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments

CHANGZHOU HUADA KEJIE OPTO-ELECTRO INSTRUMENT CO., LTD.

Organization

Patents Grantslast 30 patents

Optical path structure and laser light projector using optical path...

Infrared temperature measurement device

Laser measuring system

Laser point projecting device

Adjusting mechanism and laser collimator having the same

Cross line laser

Automatically tracking precise layout laser tool

Patents Applicationslast 30 patents

CONSTRUCTION SURFACE FLATNESS DETECTOR

A LASER DIODE CONTROL METHOD AND CONTROL SYSTEM, AND A LASER DEVICE

LASER SURVEYING SYSTEM FOR SETTING OUT

A LASER RECEIVING DEVICE

A LASER DIODE CONTROL METHOD AND CONTROL SYSTEM, AND A LASER DEVICE

OPTICAL SYSTEM OF LASER MARKING INSTRUMENT AND LASER MARKING INSTRU...

OPTICAL PATH STRUCTURE AND LASER LIGHT PROJECTOR USING OPTICAL PATH...

MEASURING TOOL

LASER MEASURING SYSTEM

LASER POINT PROJECTING DEVICE

LASER LEVEL RULER

A LASER CONTROL CIRCUIT, CONTROL METHOD AND LASER INK LINE DEVICE W...

Adjusting Mechanism and Laser Collimator Having the Same

LASER MODULE CONTROL CIRCUIT

Trademarklast 30 trademarks

90763313 - HDOEI KEEP DOING LEVEL BEST