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- patft.uspto.gov
  
  USPTO Web Patent Databases
  
  The US Patent and Trademark Office (PTO) offers World-Wide Web (Web) access to bibliographic and full-text patent databases.
  
  2026-04-17
  
  瀏覽：1158
- www.uspto.gov
  
  United States Patent and Trademark Office
  
  Home page of the United States Patent and Trademark Office's main web site. ... USPTO 2014-2018 Strategic Plan Available for Public Comment We've released our draft 2014-2018 Strategic Plan that sets priorities to strengthen the USPTO, drive innovation, a
  
  2026-04-22
  
  瀏覽：947

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Patent - Wikipedia, the free encyclopedia

日期：2026-04-22

A patent is a set of exclusive rights granted by a sovereign state to an inventor or their assignee for a limited period of time, in exchange for the public disclosure of the invention. An invention is a solution to a ......

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EPO - Espacenet - European Patent Office

日期：2026-04-24

Site search Search current area only Advanced search Patent search Advanced patent search Deutsch English Français Contact About us European Patent Organisation The Office Boards of appeal Jobs Tenders Annual ......

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United States Patent and Trademark Office

日期：2026-04-24

Home page of the United States Patent and Trademark Office's main web site....

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Google Patent Search

日期：2026-04-21

Search more than seven million U.S. patents....

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Free Patents Online

日期：2026-04-17

Complete Patent Searching Database and Patent Data Analytics Services....

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FPO IP Research & Communities - Free Patents Online

日期：2026-04-19

Note that most fields support Phrase (ABST/"cardboard box"), Proximity ......

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Espacenet - Home page

日期：2026-04-23

Espacenet. Logo European Patent Office. Espacenet. Patent search. Deutsch · English · Français · Contact. Change country. Austria · Belgium · Bulgaria · China ......

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Espacenet: EPO

日期：2026-04-19

2011年3月24日 - Espacenet - patent search. ... GPI - advanced search. Espacenet. Patent search. Espacenet offers free access to more than 80 million patent ......

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