Norman P Pih

Title: Norman P. Pih: Inventor of a Countercurrent Liquid-Mixing Apparatus

Introduction

Norman P. Pih is an inventor associated with Newark, Delaware, and E. I. du Pont de Nemours and Company. His patent work includes an apparatus designed for multistage countercurrent liquid separation.

Latest Patents

Pih’s listed patent, “Apparatus for Mixing Liquids Used in Countercurrent Multiphase Liquid,” describes a reusable device for multiphase, multistage countercurrent liquid separation. The apparatus is intended to support the progressive separation of target microorganisms from background organisms and materials, with precise transfer, air exclusion, homogeneous mixing, and isolation from the surrounding atmosphere.

The design uses at least one chamber with a sealing, piston-like sliding bottom whose movement can be controlled or stopped. Internal mixing is provided, preferably by a magnetic stainless-steel ball that can be reciprocated from outside the chamber. Stops limit the bottom’s motion, and the patent describes several ways to actuate the apparatus. The design avoids valves and is intended to operate at low cost. The patent record lists 1 patent for Pih.

Career Highlights

Pih’s documented invention focuses on practical equipment for controlled liquid separation and mixing. His association with E. I. du Pont de Nemours and Company connects his patent work with an established industrial research and development organization.

Collaborations

The supplied information identifies Peter M. Mrozinski and Charles F. Collier as Pih’s coworkers. Their names provide context for the professional environment associated with his work.

Conclusion

Norman P. Pih’s listed patent presents a reusable, valve-free apparatus for controlled mixing and countercurrent liquid separation, reflecting an engineering approach to precise and economical processing.