Current location - Trademark Inquiry Complete Network - Trademark registration - American patent investigation
American patent investigation
In the United States Patent and Trademark Office (website: puter)

You can use the truncation character "$" to expand the search scope, for example: comput$ $ $.

You can use () to change the priority, such as (needle or spiral) and not (sew $ or line).

Use quotation marks to search for phrases, such as "digital computer"

Search results list display

Patent full-text display

Patent documents authorized from 1790 to 1975 only show the patent number, authorization date and US patent classification number.

Patent documents authorized after 1976, showing data of patent description items, abstracts, list of cited documents, claims and specifications (excluding drawings).

—References cited: list of references cited in this patent.

—References: list of U.S. patent documents citing this patent; It is equivalent to entering "REF/ search string" in the "Advanced Search" interface to search.

Patent full-text image display

Quick access to patent full-text image website

acgi/nph-Parser? PatentNo. =5 123456