Orono, ME, United States of America

John C Hassler

This inventor holds 2 USPTO granted patents. Top assignees: S.d. Warren Services Company, University of Maine System. Active years: 1985-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John C Hassler. Retrieved from https://idiyas.com/inventor/john-c-hassler

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 = 2.7

ph-index = 2

Forward Citations = 51(Granted Patents)


Company Filing History:


Years Active: 1985-2000

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2 patents (USPTO):Explore Patents

Title: Innovations by John C. Hassler

Introduction

John C. Hassler is a notable inventor based in Orono, ME, whose work has significantly contributed to the fields of coating technology and pulp processing. With a total of two patents to his name, he has developed innovative solutions that enhance the efficiency and quality of manufacturing processes.

Latest Patents

Hassler's latest patents include groundbreaking devices and methods designed for testing tack uniformity of coatings. These devices enable the characterization of local, small-scale variations in tack build-up, measuring tack over areas smaller than 20 mm², and ideally under 1 mm². Such detailed measurements allow for a more accurate assessment of tack properties, which is crucial in predicting back trap mottle (BTM) in coatings.

Another significant patent pertains to the method for determining the degree of completion and pulp yield during pulping or delignification reactions. This method involves an advanced on-line, real-time, closed-loop process control system that monitors the reaction of wood in process liquor. By sampling the liquor and analyzing its total organic carbon content, it calculates the degree of completion and pulp yield through a mathematical model grounded in the conservation of carbon mass.

Career Highlights

Throughout his career, John C. Hassler has been associated with reputable organizations such as the University of Maine System and S. D. Warren Services Company. His experiences in these institutions have likely enriched his research capabilities and innovation potential.

Collaborations

Hassler has collaborated with renowned professionals in his field, including Joseph M. Genco and Douglas W. Bousfield. These collaborations have fostered a rich exchange of ideas and expertise, further advancing his inventions and contributions to the industry.

Conclusion

In summary, John C. Hassler stands out as an influential inventor whose work in testing tack uniformity and monitoring pulp yield has the potential to redefine manufacturing practices. His patents reflect a commitment to innovation and efficiency, positioning him as a notable figure in his respective fields.

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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