Paul Kwong Shun CHEUNG

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Molding method for producing a stator for a screw drilling tool usi...
- Patent number 11,673,297
- Issue date Jun 13, 2023
- SHANGHAI PUJIA DRILLING TECHNOLOGY CO., LTD.
- Dingyu Guo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Prepolymer of elastomer material for screw drilling tool and prepar...
- Patent number 11,555,087
- Issue date Jan 17, 2023
- SHANGHAI PUJIA DRILLING TECHNOLOGY CO., LTD.
- Dingyu Guo
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
PREPOLYMER OF ELASTOMER MATERIAL FOR SCREW DRILLING TOOL AND PREPAR...
- Publication number 20200231734
- Publication date Jul 23, 2020
- SHANGHAI PUJIA DRILLING TECHNOLOGY CO., LTD.
- Dingyu GUO
- E21 - EARTH DRILLING MINING
Information Patent Application
MOLDING METHOD FOR PRODUCING A STATOR FOR A SCREW DRILLING TOOL USI...
- Publication number 20200230845
- Publication date Jul 23, 2020
- SHANGHAI PUJIA DRILLING TECHNOLOGY CO., LTD.
- Dingyu GUO
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL