West St. Paul, MN, United States of America

Dennis J Chirhart

This inventor holds 4 USPTO granted patents. Top assignee: 3M Innovative Properties Company. Active years: 1990-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Dennis J Chirhart. Retrieved from https://idiyas.com/inventor/dennis-j-chirhart

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 3.6

ph-index = 4

Forward Citations = 115(Granted Patents)


Company Filing History:


Years Active: 1990-2008

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4 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Dennis J Chirhart

Introduction

Dennis J Chirhart, an accomplished inventor based in West St. Paul, Minnesota, has made significant contributions to the field of retroreflective technology. With a total of four patents to his name, his innovative ideas have influenced various applications in safety and visibility.

Latest Patents

Among Chirhart's latest patents, the "Retroreflective Sheeting with Controlled Cap-Y" stands out as a groundbreaking development. This patent describes a retroreflective laminate sheeting that features a unique viewing surface with discrete pigmented indicia. These indicia are designed to provide a specific cap-Y value that is less than that of the retroreflective layer, enhancing the visual properties of the sheeting.

Another notable patent is the "Cube Corner Retroreflective Article with Enhanced Pigmentation." This invention combines a transparent film, a pigmented layer, and a retroreflective cube layer, which includes cube corner elements bounded by intersecting grooves. The strategic alignment of pigmented indicia with these grooves enables improved functionality and effectiveness of the retroreflective article.

Career Highlights

Chirhart has had a successful career, notably working with the Minnesota Mining and Manufacturing Company (3M) and 3M Innovative Properties Company. His work at these organizations has played a pivotal role in advancing industry standards in retroreflective technologies.

Collaborations

Throughout his career, Dennis has collaborated with talented individuals such as Terry R Bailey and Howard R Tolliver. These partnerships have fostered creative environments leading to innovative solutions and product advancements in their respective fields.

Conclusion

Dennis J Chirhart's contributions to retroreflective technology through his patents and collaborations illustrate his commitment to innovation. His work continues to inspire and influence advancements in safety and visibility applications, establishing him as a notable figure in the realm of inventions.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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