免费专利检索网站
# 参考
- https://www.zhihu.com/question/20766812 (opens new window)
- https://www.zhihu.com/question/59967051 (opens new window)
# 亲测免费的
- http://www.innojoy.com/
# 国家官方免费的(非常卡)
- http://pss-system.cnipa.gov.cn/sipopublicsearch/portal/uiIndex.shtml (opens new window)
- https://cprs.patentstar.com.cn/ (opens new window)
# 还没试过的
- http://www.caship.ac.cn/
- https://www.baiten.cn/
- https://www.rainpat.com/
- https://www.iprdb.com/ (注册验证码收不到)
- https://www.patenthub.cn/
# 免费转收费的
- http://www.soopat.com/
编辑 (opens new window)
上次更新: 2021/11/06, 19:59:09