Skip to content
The Patent Garden

US Plant Patent PP18036

Silvanus 1

Thuja plant named ‘Silvanus 1’

PUBLIC DOMAIN

Patent expired December 7, 2025. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on September 20, 2025. This patent earned 78 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP18036, the photograph of Silvanus 1 printed in the patent.
Figure 1 from US Plant Patent PP18036, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

The record

Patent number
PP18036
Filed
September 20, 2005
Granted
September 18, 2007
Expires
December 7, 2025
Assignee
NEMETH JENOE
Inventor
NEMETH JENOE

Abstract

‘Silvanus 1’ is a new variety of Thuja occidentalis that exhibits medium dense branching and is suitable for use as a solitary garden plant or for use as a field hedge.

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

1. A new and distinct variety of Thuja occidentalis plant named ‘Silvanus 1’ as is herein described and illustrated.

Read the full patent: US Plant Patent PP18036 in full — the complete specification, every figure, and the file history.