Patent · US Active

3-oxa-10-aza-phenanthrenes

US7838521B2 · kind B2 · utility

3Cited by

7References

18Claims

0Family size

Assignee

NYCOMED GMBH · DE

Inventors

Dieter Flockerzi · Allensbach, DE
Ulrich Kautz · Allensbach, DE
Armin Hatzelmann · Konstanz, DE
Christof Zitt · Konstanz, DE
Andrea Wohlsen · Konstanz, DE
Degenhard Marx · Radebeul, DE
Hans-Peter Kley · Allensbach, DE
Jens Christoffers · Oldenburg, DE
Anna Rosiak · Hannover, DE

Key dates

Filing date	Sep 5, 2005
Grant date	Nov 23, 2010
Priority date	—
Expiry date	Mar 4, 2028

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P43/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The compounds of formula Iin which R1, R2 and R3 have the meanings as given in the description, are novel effective PDE4 inhibitors.

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