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Inventor

Eun Chang Choi

Inventor
Daejeon, KR

Overview

21→
Patents
1997–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 21 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A61Bprimary
A61BDiagnosis15%
H04LTransmission of digital information, e.g. telegraphic communication15%
H04WWireless communication networks12%
F24FAir-conditioning6%
A61CDentistry3%
A61FFilters implantable into blood vessels3%
A61LMethods or apparatus for sterilising materials or objects in general3%
B29CShaping or joining of plastics3%
B33YAdditive manufacturing, i.e. manufacturing of three-dimensional [3d] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3d printing, stereolithography or selective laser sintering3%
C12MApparatus for enzymology or microbiology3%
PatentTitleYear
10,835,390Method for manufacturing bone graft material and bone graft material manufactured thereby202010,695,090Automatic hair transplant apparatus202010,582,947Follicle transfer and transplantation method based on follicular unit extraction202010,441,315Apparatus for loading follicular unit into needle for hair implant201910,251,674Manual follicle-transplanting hair transplanter for increasing graft survival rate201910,174,279Apparatus and method for expanding skin20199,848,909Automatic hair transplanter for transplanting follicles20179,008,423'Method and apparatus for detecting and recognizing object using local binary patterns'20158,472,426'Real-time wireless communication method for guaranteeing quality of service in wireless personal area network'20138,364,083'Priority-based wireless USB transfer service management apparatus and method thereof'20138,155,031'Wireless audio transceiver system and method using UWB wireless communication'20128,018,829'Method and apparatus for OFDM based on 3D signal constellation'20118,000,753'Apparatus and method for providing hands-free and LCD display function of mobile communication terminal using Zigbee'20117,774,439'Sensing information management apparatus and method of sensor based home network system'20107,728,763'High resolution ranging apparatus and method using UWB'20106,346,895'Apparatus and method for using nibble inversion code'20026,238,023'Window type air conditioner having injection-molded upper and lower casings'20016,104,326'Bit synchronization apparatus for recovering high speed NRZ data'20006,059,021'Horizontal air direction control vane arrangement of an air conditioner'20005,862,676'Refrigerant expansion device'19995,675,293'Voltage controlled ring oscillator'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2015Patents assigned to KOREA ELECTRONICS TELECOMM (11)· patent assignee history
1997–2002Patents assigned to KOREA TELECOMMUNICATION (3)· patent assignee history
1997–2015Based in Daejeon, KR· patent location history
1999–2001Patents assigned to SAMSUNG ELECTRONICS CO LTD (3)· patent assignee history
1999–2001Based in Suwon-si, KR· patent location history
2002Based in Taejon, KR· patent location history
2012Based in Daejon, KR· patent location history
2017–2020Patents assigned to ELECTRONICS & TELECOMMUNICATIONS RES INST (7)· patent assignee history
2017–2020Based in Daegu, KR· patent location history
2019–2020Patents assigned to KYUNGPOOK NAT UNIV IND ACADEMIC COOP FOUND (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KOREA ELECTRONICS TELECOMM111997–2015
ELECTRONICS & TELECOMMUNICATIONS RES INST72017–2020
KOREA TELECOMMUNICATION31997–2002
KYUNGPOOK NAT UNIV IND ACADEMIC COOP FOUND32019–2020
SAMSUNG ELECTRONICS CO LTD31999–2001
Locations
LocationPatentsSpan
Daejeon, KR91997–2015
Daegu, KR72017–2020
Suwon-si, KR31999–2001
Daejon, KR12012
Taejon, KR12002