Hakki Han

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Seoul, KR

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Patents Grantslast 30 patents

Information Patent Grant
Elevator having function of removing dust adhered to object aboard
- Patent number 12,103,821
- Issue date Oct 1, 2024
- Gumyoung General Co., Ltd.
- Gum-Gee Lee
- B08 - CLEANING
Information Patent Grant
Reflective optical encoder with contaminant protection
- Patent number 10,396,635
- Issue date Aug 27, 2019
- Otis Elevator Company
- HakKi Han
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic elevator door coupler
- Patent number 8,776,953
- Issue date Jul 15, 2014
- Otis Elevator Company
- HakKi Han
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
ELEVATOR HAVING FUNCTION OF REMOVING DUST ADHERED TO OBJECT ABOARD
- Publication number 20210395044
- Publication date Dec 23, 2021
- GUMYOUNG GENERAL CO., LTD.
- Gum-Gee Lee
- B08 - CLEANING
Information Patent Application
ELEVATOR DOOR CONTROL SYSTEM FOR DETECTION OF OBSTACLE TRAPPING
- Publication number 20190100412
- Publication date Apr 4, 2019
- Otis Elevator Company
- HakKi Han
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
REFLECTIVE OPTICAL ENCODER WITH CONTAMINANT PROTECTION
- Publication number 20180212495
- Publication date Jul 26, 2018
- Otis Elevator Company
- HakKi HAN
- B66 - HOISTING LIFTING HAULING
Information Patent Application
MAGNETIC ELEVATOR DOOR COUPLER
- Publication number 20100282546
- Publication date Nov 11, 2010
- Hakki Han
- B66 - HOISTING LIFTING HAULING