Inventor

SIEFERT HANS-MARTIN

DE3 patents

⚠️ This page may combine multiple inventors who share the name “SIEFERT HANS-MARTIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BAYER AG

2 patents

US6270799B1Aug 7, 2001

Medicament formulation with a controlled release of an active agent

BAYER AG15 citations77

US6740306B2May 25, 2004

Imidazotriazinone-containing compositions for nasal administration

BAYER AG3 citations57

SCHERING AG

1 patent

US4367216AJan 4, 1983

Triiodinated 5-aminoisophthalic acid derivatives

SCHERING AG50 citations89