Karl R. Mueller

Papers

Total Citations

H-Index

About

Karl R. Mueller has made foundational contributions to pharmaceutical science, particularly in the development and evaluation of transdermal drug delivery systems. His key research areas include percutaneous absorption testing, diffusion cell methodology, and the biopharmaceutical characterization of transdermal patches. Mueller’s most notable achievement is the invention of the "Patch Cell," an automated in vitro diffusion apparatus designed to assess the release and skin permeation of transdermal nitroglycerine (TNG) delivery systems. This innovation enabled reproducible, batch-to-batch quality control testing using skin from human, hairless mouse, and Yucatan pig models, bridging the gap between laboratory research and clinical application. His seminal 1990 paper, "Automated In Vitro Method for Evaluating Diffusion Characteristics of Transdermal Nitroglycerine Delivery Systems with or without Skin," has garnered 3 citations, reflecting its specialized but enduring relevance in transdermal technology. Mueller’s work has provided a standardized tool for researchers and manufacturers, advancing the safety and efficacy of transdermal therapeutics. His contributions remain a reference point for those developing in vitro models for drug delivery assessment.