Collapsible bicycles with triangular frames (expired in 2006)
http://www.freepatentsonline.com/4718688.pdf
http://www.freepatentsonline.com/help/item/When-does-a-patent-expire.html
Folding handlebar
http://www.freepatentsonline.com/7243573.pdf
Hub assembly for disk brake of bicycle
http://www.freepatentsonline.com/7367632.pdf
Quick release structure for a bicycle
http://www.freepatentsonline.com/7681900.pdf
Patent documents available on Taiwan Patent Serach
http://twpat.tipo.gov.tw/tipotwoc/tipotwekm
Hub and disc-plate locking structure of a bicycle: Patent Number M293204
Quick release structure for bike: Patent Number M328409
Hub: Patent Number M328958
Belt-driven bicycle frame with eccentric bottom bracket: Patent Number M330246