Han-Chao Chang

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Tainan, TW

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Patents Grantslast 30 patents

Information Patent Grant
Article with circuit actuating capability
- Patent number 8,207,458
- Issue date Jun 26, 2012
- Jen-Lin Chen
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Grant
Gift package having circuit actuating capability
- Patent number 7,837,038
- Issue date Nov 23, 2010
- Han-Chao Chang
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Pen-and-electronic device assembly
- Patent number 7,314,325
- Issue date Jan 1, 2008
- Han-Chao Chang
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Button fastening device with circuit actuating capability
- Patent number 7,186,931
- Issue date Mar 6, 2007
- Han-Chao Chang
- A44 - HABERDASHERY JEWELLERY

Patents Applicationslast 30 patents

Information Patent Application
MEDICAMENT REMINDER DEVICE
- Publication number 20110273280
- Publication date Nov 10, 2011
- Han Chao Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
ARTICLE WITH CIRCUIT ACTUATING CAPABILITY
- Publication number 20090220928
- Publication date Sep 3, 2009
- Jen-Lin Chen
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Application
Pen-and-electronic device assembly
- Publication number 20070139914
- Publication date Jun 21, 2007
- Han-Chao Chang
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Button fastening device with circuit actuating capability
- Publication number 20060283691
- Publication date Dec 21, 2006
- Jen-Lin Chen
- Han-Chao Chang
- A44 - HABERDASHERY JEWELLERY
Information Patent Application
Method for controlling the working time of a gypsum composition in...
- Publication number 20030129256
- Publication date Jul 10, 2003
- Central Medical Technologies Inc.
- Han-Chao Chang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE