Patent · US Active

Intrauterine system

US9949869B2 · kind B2 · utility

5Cited by

8References

11Claims

0Family size

Assignee

Bayer Oy · FI

Inventors

Taina Tjäder · Littoinen, FI
Ulla Calvo Alonso · Kaarina, FI
Pirjo Inki · Kaarina, FI
Harri Jukarainen · Kuusisto, FI
Ilkka Jutila · Littoinen, FI
Pirjo Kortesuo · Maaninka, FI
Juha Lehtinen · Turku, FI
Eeva Lukkari-Lax · Espoo, FI
Heikki Lyytikäinen · Naantali, FI
Joachim Moede · Turku, FI
Hannu Nikander · Paattinen, FI
Pirjo Sallinen · Berlin, DE
Faisal Shafiq · Krefeld, DE
Wolfgang Kaufhold
Christian Wamprecht · Neuss, DE

Key dates

Filing date	Sep 30, 2010
Grant date	Apr 24, 2018
Priority date	—
Expiry date	Jan 8, 2034

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P15/18
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to novel intrauterine systems and to methods for manufacturing these systems. An intrauterine system according to the invention comprises a reservoir and a continuous, closed and flexible frame. The frame comprises a thermoplastic polyurethane elastomer made of a polycarbonate diol, 1,6-hexamethylenediisocyanate, and a chain extender.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.