Company Filing History:
5 out of 37 
5 out of 18 Years Active: 2005-2011
Title: **Innovative Contributions of John Tehan in Mail Safety Technologies**
Introduction
John Tehan, a distinguished inventor based in Chesterfield, Missouri, has made substantial contributions to the field of mail safety technologies. With a total of ten patents to his name, his work primarily focuses on methods for detecting hazardous substances within mail pieces, particularly addressing concerns related to Chemical and Biological Warfare Agents (CBWAs).
Latest Patents
Among his latest innovations are two significant patents aimed at enhancing mail handling safety. The first is titled "Systems and methods for residue collection with improved letter handling capability." This invention includes systems for detecting particulate substances within mail, specifically designed to identify residues of CBWAs. It is integrated into a Dual Pass Rough Cull System (DPRCS), assisting in identifying contaminated mail upon its initial entry into postal facilities, thus preventing the mixing of potentially hazardous mail with other pieces. Additionally, to safeguard the integrity of mail during processing, the system employs aerosol chambers and dual arrays of pinch rollers to minimize damage to the mail pieces.
The second patent is closely related and focuses specifically on the detection of these residues, reinforcing the importance of safety in mail handling operations.
Career Highlights
John Tehan has worked with notable companies such as Drs Sustainment Systems, Inc. and Engineered Support Systems, Inc. His experience in these organizations has enriched his expertise and fueled his innovative endeavors in creating safer mail handling systems.
Collaborations
Throughout his career, Tehan has collaborated with talented individuals, including colleagues James J. Strohmeyer and William Blumfelder. These partnerships have played a vital role in the development and refinement of his patented technologies.
Conclusion
John Tehan's inventions represent critical advancements in mail safety, particularly in protecting against potential threats posed by hazardous substances. By focusing on innovative detection systems, his patents aim to revolutionize how mail is processed and handled, ensuring the safety of postal workers and the public at large. With a commitment to improving technology in this field, Tehan remains a noteworthy figure in the realm of inventions focused on public safety.