Patent · US Active

Crystalline anhydrate with anticholinergic efficacy

US7968717B2 · kind B2 · utility

4Cited by

3References

10Claims

0Family size

Assignee

Boehringer Ingelheim International GmbH · DE

Inventors

Waldemar Pfrengle · Seibersbach, DE
Peter Sieger · Mittelbiberach, DE

Key dates

Filing date	Oct 29, 2004
Grant date	Jun 28, 2011
Priority date	—
Expiry date	Mar 18, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D451/10
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a new crystalline anhydrate of tiotropium bromide, processes for preparing it and its use for preparing a pharmaceutical composition for the treatment of respiratory complaints, particularly for the treatment of COPD (chronic obstructive pulmonary disease) and asthma.

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