Search United States Patents, Inventors and Assignees

No. PatentGenius is an independent reference archive with no official standing and no connection to any patent office. Every record here links out to the full official document, which is the authoritative source. Nothing on this site is legal advice.

Records are compiled from published United States patent documents and verified field by field against the official record. Where a field cannot be verified it is left empty rather than estimated — an incomplete record is more useful than a plausible-looking wrong one.

Inventors are the people who made the invention and must be natural persons. The assignee is whoever owned the right at the time of grant, usually an employer under an agreement signed long before the filing. The two fields answer different questions, which is why inventors and assignees are indexed separately here.

A D prefix marks a design patent, which protects the ornamental appearance of an article rather than how it works, and whose single claim is defined by the drawings. PP marks a plant patent, RE a reissue. Utility patents — the large majority — carry a bare number.

No. It holds a compiled subset, and the listings show what is currently held rather than the complete corpus. A search that returns nothing here is not evidence that no such patent exists; the official databases are the place to establish that.