Ryan M Callahan

Title: Ryan M. Callahan and His Filter Innovations.

Introduction

Ryan M. Callahan is an inventor based in Minneapolis, Minnesota, whose patent work focuses on filter technologies. He is associated with Donaldson Company, Inc. His portfolio includes 2 patents.

Latest Patents

Callahan’s latest patents address filter construction and airflow management.

“Pattern Coated Filter and Method” describes a filter assembly with adsorbent beads attached by adhesive to a base layer. The assembly also includes two filter-material layers bonded around their perimeter, forming a substantially coextensive structure.

“Recirculation Filter for an Electronics Enclosure” describes a filter designed for use near sensitive components inside an electronics enclosure. Its filter-material layer sits between two outer layers, with much of the material’s central region offset from the filter’s first flow face.

Career Highlights

Callahan’s patented work reflects an emphasis on practical filtration solutions, including adsorbent-bearing filter assemblies and recirculation filters for electronics enclosures. These designs address both filter structure and the placement of filtration material within a device.

Collaborations

Callahan’s listed coworkers include Daniel L. Tuma and Scott A. Keller. His work is associated with Donaldson Company, Inc.

Conclusion

Ryan M. Callahan’s patents highlight contributions to filter design, from pattern-coated assemblies to recirculation filters intended for electronics enclosures.