search:us free patent相關網頁資料

    • patft.uspto.gov
      The US Patent and Trademark Office (PTO) offers World-Wide Web (Web) access to bibliographic and full-text patent databases.
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    • www.freepatentsonline.com
      Most Popular Patent Content Recent documents: US Patents US Applications US Design Patents Miscellaneous: Crazy Patents University Patents Chemical Patents New Computers: Permitting Access Electrical Computers
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日期:2026-04-24
US Plant Patent pp05000 [add leading 0's if needed] US Reissue re34343 US Statutory Invention Reg. h1234 Multiple Requests Separate with a semicolon: 12345; pp6000 Enter Number(s): To link to a patent, please use the ......
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日期:2026-04-18
Complete Patent Searching Database and Patent Data Analytics Services. ... Note that most fields support Phrase (ABST/"cardboard box"), Proximity (ABST/"cardboard box"~5), Wildcard (ABST/card*), and Leading Wildcard ......
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日期:2026-04-22
Download and print a PDF copy of any U.S. patent, for free, through the use of a simple web form. Multiple patents can be obtained by separating requests with a semicolon. Design ......
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日期:2026-04-22
Search more than seven million U.S. patents....
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日期:2026-04-24
Complete Patent Searching Database and Patent Data Analytics Services....
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日期:2026-04-21
Note that most fields support Phrase (ABST/"cardboard box"), Proximity ......
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日期:2026-04-24
www.pat2pdf.org - A FREE patent search tool. Download U.S. patents (in PDF) and more! To download a copy of a ......
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日期:2026-04-22
A list of online databases for a free patent search covering Canada - United States - Europe - WIPO and the EPO free ......