Lien-Wen Chang

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Spring hinge for glasses
- Patent number 7,581,289
- Issue date Sep 1, 2009
- Obe Ohnmacht & Baumgartner GmbH & Co. KG
- Lien Fon Chang
- G02 - OPTICS
Information Patent Grant
Spring hinge for glasses
- Patent number 7,318,252
- Issue date Jan 15, 2008
- OBE Ohnmacht & Baumgartner GmbH & Co.
- Lien Fon Chang
- G02 - OPTICS
Information Patent Grant
Projector device
- Patent number 6,923,417
- Issue date Aug 2, 2005
- Benq Corporation
- Lien-Wen Chang
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electronic apparatus with height-adjusting device
- Patent number 6,789,904
- Issue date Sep 14, 2004
- Benq Corporation
- Lien-Wen Chang
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Adjustable support stand
- Patent number 6,685,149
- Issue date Feb 3, 2004
- BenQ Corporation
- Lien-Wen Chang
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Computer mainframe housing assembled with hooks and notches
- Patent number 5,164,886
- Issue date Nov 17, 1992
- Lien-Sheng Chang
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD, SYSTEM AND DEVICE OF SPEECH EMOTION RECOGNITION AND QUANTIZ...
- Publication number 20230154487
- Publication date May 18, 2023
- Chu-Ying HUANG
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
SPRING HINGE FOR GLASSES
- Publication number 20070283530
- Publication date Dec 13, 2007
- OBE OHNMACHT & BAUMGARTNER GMBH & CO. KG
- Lien Fon Chang
- G02 - OPTICS
Information Patent Application
Spring hinge for glasses
- Publication number 20050086768
- Publication date Apr 28, 2005
- Lien Fon Chang
- G02 - OPTICS
Information Patent Application
Connection device
- Publication number 20040150976
- Publication date Aug 5, 2004
- Lien-Wen Chang
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Display with replaceable stand
- Publication number 20040084588
- Publication date May 6, 2004
- Benq Corporation
- Chia-Yu Liu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Projector device
- Publication number 20030227600
- Publication date Dec 11, 2003
- Lien-Wen Chang
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electronic apparatus with height-adjusting device
- Publication number 20030227601
- Publication date Dec 11, 2003
- Lien-Wen Chang
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY