Byung Jin Chang

Person

Ann Arbor, MI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Multifunctional mounting assembly for wrap-around eyeglass frames
- Patent number 12,140,818
- Issue date Nov 12, 2024
- General Scientific Corp.
- Byung J. Chang
- G02 - OPTICS
Information Patent Grant
Head-mounted medical/dental accessories with voice-controlled opera...
- Patent number 12,000,549
- Issue date Jun 4, 2024
- General Scientific Corp.
- Byung J. Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Head-mountable illuminators with user-selectable color temperature
- Patent number 11,506,365
- Issue date Nov 22, 2022
- General Scientific/Surgitel
- Byung J. Chang
- F21 - LIGHTING
Information Patent Grant
Removable, adjustable wire arms for nose pads
- Patent number 11,402,658
- Issue date Aug 2, 2022
- General Scientific Corp. / Surgitel
- Byung J. Chang
- G02 - OPTICS
Information Patent Grant
Head-mounted LED light with integrated, adjustable iris
- Patent number 11,112,090
- Issue date Sep 7, 2021
- General Scientific Corp./Surgitel
- Byung Jin Chang
- A42 - HEADWEAR
Information Patent Grant
Head-mounted illuminator with capacitive proximity control
- Patent number 11,013,573
- Issue date May 25, 2021
- General Scientific/Surgitel
- Byung J. Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Head-mounted medical/dental accessories with voice-controlled opera...
- Patent number 10,842,002
- Issue date Nov 17, 2020
- Byung J. Chang
- F21 - LIGHTING
Information Patent Grant
Medical/dental headlamp with adjustable proximity on/off sensor
- Patent number 10,066,816
- Issue date Sep 4, 2018
- General Scientific Corp.
- Byung J. Chang
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
High-efficiency LED illuminator with improved beam quality and vent...
- Patent number 9,494,299
- Issue date Nov 15, 2016
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Grant
Through-the-lens (TTL) loupes with improved declination angle
- Patent number 9,465,235
- Issue date Oct 11, 2016
- General Scientific Corporation
- Byung J. Chang
- G02 - OPTICS
Information Patent Grant
High-efficiency LED illuminator with improved beam quality
- Patent number 9,383,077
- Issue date Jul 5, 2016
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Grant
Medical/dental headlight system with interchangeable beam-forming o...
- Patent number 9,273,836
- Issue date Mar 1, 2016
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Grant
Through-the-lens loupes with improved declination angle
- Patent number D746354
- Issue date Dec 29, 2015
- General Scientific Corporation
- Byung J. Chang
- D16 - Photography and optical equipment
Information Patent Grant
Head-worn illuminators and magnifiers with optical rejection coatin...
- Patent number 9,052,455
- Issue date Jun 9, 2015
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Grant
Mechanically stabilized optical mounting assembly
- Patent number 8,964,291
- Issue date Feb 24, 2015
- General Scientific Corporation
- Byung J. Chang
- G02 - OPTICS
Information Patent Grant
Low profile optical mounting assembly
- Patent number 8,913,318
- Issue date Dec 16, 2014
- General Scientific Corporation
- Thomas A Cummings
- G02 - OPTICS
Information Patent Grant
LED illuminator with improved beam quality
- Patent number 8,662,709
- Issue date Mar 4, 2014
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Grant
Head-mountable LED illuminator
- Patent number D682450
- Issue date May 14, 2013
- General Scientific Corporation
- Byung J. Chang
- D26 - Lighting
Information Patent Grant
Through-the-lens loupe assembly with interpupillary distance adjust...
- Patent number 8,120,847
- Issue date Feb 21, 2012
- General Scientific Corporation
- Byung J. Chang
- G02 - OPTICS
Information Patent Grant
Low-profile optical mounting assembly
- Patent number D649571
- Issue date Nov 29, 2011
- General Scientific Corporation
- Thomas A Cummings
- D16 - Photography and optical equipment
Information Patent Grant
Clip-on video camera system for medical, surgical and dental applic...
- Patent number 8,068,169
- Issue date Nov 29, 2011
- General Scientific Corporation
- Byung Jin Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
LED illuminator with improved beam quality
- Patent number 8,047,684
- Issue date Nov 1, 2011
- General Scientific Corporation
- Byung J. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Spectacle frames
- Patent number D636011
- Issue date Apr 12, 2011
- General Scientific Corporation
- Byung J. Chang
- D16 - Photography and optical equipment
Information Patent Grant
Low-profile optical mounting assembly
- Patent number 7,791,798
- Issue date Sep 7, 2010
- General Scientific Corporation
- Thomas Cummings
- G02 - OPTICS
Information Patent Grant
Pair of through-the-lens medical/dental loupes
- Patent number D617825
- Issue date Jun 15, 2010
- General Scientific Corporation
- Byung J. Chang
- D16 - Photography and optical equipment
Information Patent Grant
Telemicroscopic loupes with removable, replaceable lens cap to adju...
- Patent number 7,673,989
- Issue date Mar 9, 2010
- General Scientific Corporation
- Byung Jin Chang
- G02 - OPTICS
Information Patent Grant
Stable titanium spectacle frames for telemicroscopes and surgical t...
- Patent number 7,641,335
- Issue date Jan 5, 2010
- General Scientific Corporation
- Byung Jin Chang
- G02 - OPTICS
Information Patent Grant
Belt-worn control unit for LED headlight
- Patent number D601975
- Issue date Oct 13, 2009
- General Scientific Corporation
- Byung J. Chang
- D13 - Equipment for production, distribution, or transformation of energy
Information Patent Grant
Clip-on head-mounted LED light for medical and dental professionals
- Patent number D602185
- Issue date Oct 13, 2009
- General Scientific Corporation
- Byung J. Chang
- D26 - Lighting
Information Patent Grant
Through-the-lens medical/dental loupes
- Patent number D592692
- Issue date May 19, 2009
- General Scientific Corporation
- Byung J. Chang
- D16 - Photography and optical equipment

Patents Applicationslast 30 patents

Information Patent Application
HEAD-MOUNTABLE ILLUMINATORS WITH USER-SELECTABLE COLOR TEMPERATURE
- Publication number 20220268426
- Publication date Aug 25, 2022
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Application
MULTIFUNCTIONAL MOUNTING ASSEMBLY FOR WRAP-AROUND EYEGLASS FRAMES
- Publication number 20210124191
- Publication date Apr 29, 2021
- General Scientific Corp.
- Byung J. Chang
- G02 - OPTICS
Information Patent Application
REMOVABLE, ADJUSTABLE WIRE ARMS FOR NOSE PADS
- Publication number 20210033883
- Publication date Feb 4, 2021
- General Scientific Corp.
- Byung J. Chang
- G02 - OPTICS
Information Patent Application
HEAD-MOUNTED MEDICAL/DENTAL ACCESSORIES WITH VOICE-CONTROLLED OPERA...
- Publication number 20210029804
- Publication date Jan 28, 2021
- General Scientific Corp.
- Byung J. Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
HEAD-MOUNTED ILLUMINATOR WITH CAPACITIVE PROXIMITY CONTROL
- Publication number 20190125482
- Publication date May 2, 2019
- General Scientific Corp.
- Byung J. Chang
- F21 - LIGHTING
Information Patent Application
HEAD-MOUNTED MEDICAL/DENTAL ACCESSORIES WITH VOICE-CONTROLLED OPERA...
- Publication number 20180310384
- Publication date Oct 25, 2018
- General Scientific Corporation
- Byung J. Chang
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
CUSTOM FIT NOSE PADS FOR SPECTACLE FRAMES
- Publication number 20180239165
- Publication date Aug 23, 2018
- General Scientific Corp.
- Byung J. Chang
- G02 - OPTICS
Information Patent Application
NECK POSTURE RECORDING AND WARNING DEVICE
- Publication number 20170345274
- Publication date Nov 30, 2017
- General Scientific Corporation
- Byung J. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
MEDICAL/DENTAL HEADLAMP WITH ADJUSTABLE PROXIMITY ON/OFF SENSOR
- Publication number 20160238220
- Publication date Aug 18, 2016
- General Scientific Corporation
- Byung J. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
THROUGH-THE-LENS (TTL) LOUPES WITH IMPROVED DECLINATION ANGLE
- Publication number 20150146290
- Publication date May 28, 2015
- General Scientific Corporation
- Byung J. Chang
- G02 - OPTICS
Information Patent Application
MOTION-ACTIVATED MEDICAL/DENTAL HEADLAMP
- Publication number 20150003048
- Publication date Jan 1, 2015
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Application
MEDICAL/DENTAL HEADLAMP WITH ADJUSTABLE PROXIMITY ON/OFF SENSOR
- Publication number 20150003049
- Publication date Jan 1, 2015
- General Scientific Corporation
- Byung J. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
HIGH-EFFICIENCY LED ILLUMINATOR WITH IMPROVED BEAM QUALITY AND VENT...
- Publication number 20140293588
- Publication date Oct 2, 2014
- Byung J. Chang
- F21 - LIGHTING
Information Patent Application
HIGH-EFFICIENCY LED ILLUMINATOR WITH IMPROVED BEAM QUALITY
- Publication number 20140247582
- Publication date Sep 4, 2014
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Application
MECHANICALLY STABILIZED OPTICAL MOUNTING ASSEMBLY
- Publication number 20130094081
- Publication date Apr 18, 2013
- General Scientific Corporation
- Byung J. Chang
- G02 - OPTICS
Information Patent Application
MEDICAL/DENTAL HEADLIGHT SYSTEM WITH IMPROVED COLOR RENDITION
- Publication number 20120320568
- Publication date Dec 20, 2012
- General Scientific Corporation
- Byung J. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
HEAD-WORN ILLUMINATORS AND MAGNIFIERS WITH OPTICAL REJECTION COATIN...
- Publication number 20120320454
- Publication date Dec 20, 2012
- General Scientific Corporation
- Byung J. Chang
- G02 - OPTICS
Information Patent Application
LED ILLUMINATOR WITH IMPROVED BEAM QUALITY
- Publication number 20110305007
- Publication date Dec 15, 2011
- Byung J. Chang
- F21 - LIGHTING
Information Patent Application
LED ILLUMINATOR WITH IMPROVED BEAM QUALITY
- Publication number 20110122598
- Publication date May 26, 2011
- General Scientific Corporation
- Byung J. Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
MEDICAL/DENTAL HEADLIGHT SYSTEM WITH INTERCHANGEABLE BEAM-FORMING O...
- Publication number 20110026258
- Publication date Feb 3, 2011
- General Scientific Corporation
- Byung J. Chang
- F21 - LIGHTING
Information Patent Application
LOW PROFILE OPTICAL MOUNTING ASSEMBLY
- Publication number 20110013277
- Publication date Jan 20, 2011
- General Scientific Corporation
- Thomas Cummings
- G02 - OPTICS
Information Patent Application
THROUGH-THE-LENS LOUPE ASSEMBLY WITH INTERPUPILLARY DISTANCE ADJUST...
- Publication number 20100290115
- Publication date Nov 18, 2010
- General Scientific Corporation
- Byung J. Chang
- G02 - OPTICS
Information Patent Application
CLIP-ON VIDEO CAMERA SYSTEM FOR MEDICAL, SURGICAL AND DENTAL APPLIC...
- Publication number 20080204589
- Publication date Aug 28, 2008
- Byung Jin Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
HEAT-DISSIPATING HEAD-MOUNTED LED LAMP
- Publication number 20080101081
- Publication date May 1, 2008
- Byung J. Chang
- F21 - LIGHTING
Information Patent Application
Low-profile optical mounting assembly
- Publication number 20070285772
- Publication date Dec 13, 2007
- Thomas Cummings
- G02 - OPTICS
Information Patent Application
Telemicroscopic loupes with removable, replaceable lens cap to adju...
- Publication number 20060192917
- Publication date Aug 31, 2006
- Byung Jin Chang
- G02 - OPTICS
Information Patent Application
Stable titanium spectacle frames for telemicroscopes and surgical t...
- Publication number 20060170860
- Publication date Aug 3, 2006
- Byung Jin Chang
- G02 - OPTICS
Information Patent Application
Ergonomic frames for telescopic loupes
- Publication number 20020159024
- Publication date Oct 31, 2002
- Byung Jin Chang
- G02 - OPTICS
Information Patent Application
Ergonomic frames for telescopic loupes
- Publication number 20020126255
- Publication date Sep 12, 2002
- Byung Jin Chang
- G02 - OPTICS
Information Patent Application
Clip-on optical mounting structure
- Publication number 20020126376
- Publication date Sep 12, 2002
- Byung Jin Chang
- G02 - OPTICS

Byung Jin Chang

Person

Patents Grantslast 30 patents

Multifunctional mounting assembly for wrap-around eyeglass frames

Head-mounted medical/dental accessories with voice-controlled opera...

Head-mountable illuminators with user-selectable color temperature

Removable, adjustable wire arms for nose pads

Head-mounted LED light with integrated, adjustable iris

Head-mounted illuminator with capacitive proximity control

Head-mounted medical/dental accessories with voice-controlled opera...

Medical/dental headlamp with adjustable proximity on/off sensor

High-efficiency LED illuminator with improved beam quality and vent...

Through-the-lens (TTL) loupes with improved declination angle

High-efficiency LED illuminator with improved beam quality

Medical/dental headlight system with interchangeable beam-forming o...

Through-the-lens loupes with improved declination angle

Head-worn illuminators and magnifiers with optical rejection coatin...

Mechanically stabilized optical mounting assembly

Low profile optical mounting assembly

LED illuminator with improved beam quality

Head-mountable LED illuminator

Through-the-lens loupe assembly with interpupillary distance adjust...

Low-profile optical mounting assembly

Clip-on video camera system for medical, surgical and dental applic...

LED illuminator with improved beam quality

Spectacle frames

Low-profile optical mounting assembly

Pair of through-the-lens medical/dental loupes

Telemicroscopic loupes with removable, replaceable lens cap to adju...

Stable titanium spectacle frames for telemicroscopes and surgical t...

Belt-worn control unit for LED headlight

Clip-on head-mounted LED light for medical and dental professionals

Through-the-lens medical/dental loupes

Patents Applicationslast 30 patents

HEAD-MOUNTABLE ILLUMINATORS WITH USER-SELECTABLE COLOR TEMPERATURE

MULTIFUNCTIONAL MOUNTING ASSEMBLY FOR WRAP-AROUND EYEGLASS FRAMES

REMOVABLE, ADJUSTABLE WIRE ARMS FOR NOSE PADS

HEAD-MOUNTED MEDICAL/DENTAL ACCESSORIES WITH VOICE-CONTROLLED OPERA...

HEAD-MOUNTED ILLUMINATOR WITH CAPACITIVE PROXIMITY CONTROL

HEAD-MOUNTED MEDICAL/DENTAL ACCESSORIES WITH VOICE-CONTROLLED OPERA...

CUSTOM FIT NOSE PADS FOR SPECTACLE FRAMES

NECK POSTURE RECORDING AND WARNING DEVICE

MEDICAL/DENTAL HEADLAMP WITH ADJUSTABLE PROXIMITY ON/OFF SENSOR

THROUGH-THE-LENS (TTL) LOUPES WITH IMPROVED DECLINATION ANGLE

MOTION-ACTIVATED MEDICAL/DENTAL HEADLAMP

MEDICAL/DENTAL HEADLAMP WITH ADJUSTABLE PROXIMITY ON/OFF SENSOR

HIGH-EFFICIENCY LED ILLUMINATOR WITH IMPROVED BEAM QUALITY AND VENT...

HIGH-EFFICIENCY LED ILLUMINATOR WITH IMPROVED BEAM QUALITY

MECHANICALLY STABILIZED OPTICAL MOUNTING ASSEMBLY

MEDICAL/DENTAL HEADLIGHT SYSTEM WITH IMPROVED COLOR RENDITION

HEAD-WORN ILLUMINATORS AND MAGNIFIERS WITH OPTICAL REJECTION COATIN...

LED ILLUMINATOR WITH IMPROVED BEAM QUALITY

LED ILLUMINATOR WITH IMPROVED BEAM QUALITY

MEDICAL/DENTAL HEADLIGHT SYSTEM WITH INTERCHANGEABLE BEAM-FORMING O...

LOW PROFILE OPTICAL MOUNTING ASSEMBLY

THROUGH-THE-LENS LOUPE ASSEMBLY WITH INTERPUPILLARY DISTANCE ADJUST...

CLIP-ON VIDEO CAMERA SYSTEM FOR MEDICAL, SURGICAL AND DENTAL APPLIC...

HEAT-DISSIPATING HEAD-MOUNTED LED LAMP

Low-profile optical mounting assembly

Telemicroscopic loupes with removable, replaceable lens cap to adju...

Stable titanium spectacle frames for telemicroscopes and surgical t...

Ergonomic frames for telescopic loupes

Ergonomic frames for telescopic loupes

Clip-on optical mounting structure