# US 10,117,426 B2 · Annular sustained release preparation and production method thereof

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- Number: US 10,117,426 B2
- Document ID: US10117426B2
- Status: Granted
- Kind: B2
- Application number: 13/634,734
- Filed: 2011-03-22
- Published: 2013-01-03
- Granted: 2018-11-06
- Earliest claimed: 2010-03-24
- Assignees: Shin-Etsu Chemical Co., Ltd.
- Applicants: Ryuichi Saguchi; Takehiko Fukumoto
- Inventors: Ryuichi Saguchi; Takehiko Fukumoto
- Web page: https://patentgrep.com/patent/US10117426B2

## CPC

- A01M 1/2044: {Holders or dispensers for liquid insecticide, e.g. using wicks}
- A01M: CATCHING, TRAPPING OR SCARING OF ANIMALS (appliances for catching swarms or drone-catching A01K57/00; fishing A01K69/00 - {A01K99/00}; biocides, pest repellants or attractants A01N); APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS

## Abstract

Provided is an annular sustained release preparation having at least two polymer tubes having both ends sealed and integrated by pressure-welding or at least one polymer tube and at least one polymer rod having both ends sealed and integrated by pressure-welding; and a sex pheromone liquid contained by at least one of the tubes or the tube; wherein an annular space can be formed by pulling the tubes or the tube and the rod apart from each other at a center portion therebetween, the central portion not having been pressure-welded; and an angle formed between a line connecting respective centers of diameters of the tubes welded to each other or the tube and the rod welded to each other and the pressure application direction is from 0 to 45°.

## Claims

### Claim 1

An annular sustained release preparation comprising:
at least two polymer tubes having both ends sealed and integrated by pressure-welding, or at least one polymer tube and at least one polymer rod sealed and integrated at both ends by pressure-welding; and
a sex pheromone liquid contained by at least one of the tubes or the tube;
wherein an annular space can be formed by pulling the tubes or the tube and the rod apart from each other at a center portion therebetween, the center portion not having been pressure-welded; and an angle formed between 1) a line connecting respective centers of diameters of the tubes welded to each other or the tube and the rod welded to each other and 2) a direction of pressure applied by a pressure-welder for the pressure-welding is from 0 to 45° with respect to the line connecting respective centers of diameters of the tubes welded to each other or the tube and the rod welded to each other.

### Claim 2 (depends on 1)

The annular sustained release preparation according to claim 1, wherein the angle is 0°.

### Claim 3 (depends on 1)

The annular sustained release preparation according to claim 1, wherein at least one of said at least two polymer tubes comprises a metal wire therein.