官方网站查询导航

home page of the united states patent and trademark offices main web site.

sanxian focus on the pro- duction, r&d of acoustic green building materials and their innovation of application technology. we have obtained 15 national techni- cal patents, and established product management systems such as iso9001, iso14001 that comply strictly with national regulations.

wanfang data has been a leading information content and service provider in china since 1993. with a wide range of database resources and value-added services, wanfang data serves as a gateway to chinese culture, medicine, business, science, engineering, etc.

iprdaily is a leading global intellectual property (ip) technology media which focusing on ip services and ip industry ecosystem. we try to provide the best scientific technology media for people concerning ip field to know ip industry and future.

hangzhou xinanjiang industrial pump manufacturer that has won 26 patents in fluorine plastic magnetic pump, roots vacuum unit, water jet vacuum pump, pph wound storage tank, liquid ring vacuum pump, centrifugal pump and other fields. xinanjiang has engaged in the chemical anti-corrosion field for

since its establishment in 2002, chang tsi & partners has been managing to become one of the leading law firms in china. the firm has been constantly referred as the “national outstanding law firm”,“the best ip law firm in china”, “china ip law firm”, “tier 1 ip law firm of the year” by ministry

hengqin intellectual property exchange

china science patent & trademark agent ltd

gangyuan electronics experience of more than 27 years in tactile switch manufacturing,2 invention patents and 47 utility model patents. more miniature tactile switch info at gangyuantech.com.