Dae-Ki Park

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Yongin-shi, KR

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Patents Grantslast 30 patents

Information Patent Grant
Dual-structure helmet and method of manufacturing the same
- Patent number 6,676,884
- Issue date Jan 13, 2004
- Hong Jin Crown Corp., Ltd.
- Wan-Ki Hong
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Dual-structure helmet and method of manufacturing the same
- Patent number 6,468,644
- Issue date Oct 22, 2002
- Hong Jin Crown Corporation, Ltd.
- Wan-Ki Hong
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Dual-structure helmet and method of manufacturing the same
- Publication number 20030049431
- Publication date Mar 13, 2003
- HONG JIN CROWN Corporation, Ltd.
- Wan-Ki Hong
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL