Ja Heon Koo

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Busan, KR

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Patents Grantslast 30 patents

Information Patent Grant
Method of fabricating an antinoise earplug
- Patent number 7,998,391
- Issue date Aug 16, 2011
- Ja Heon Koo
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
NON-ADHESIVE ANTINOISE EARPLUG AND FABRICATION METHOD THEREOF
- Publication number 20110240041
- Publication date Oct 6, 2011
- Ja Heon Koo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL