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For the Inventor, By the Inventor

Tigard, OR, United States of America

Michael M Sprague

This inventor holds 7 USPTO granted patents. Top assignees: Wagner Electronic Products, Inc., Other. Active years: 1987-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Michael M Sprague. Retrieved from https://idiyas.com/inventor/michael-m-sprague

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

USPTO Granted Patents = 7

% Patents Active = 85.7

Average Co-Inventor Count = 1.5

ph-index = 4

Forward Citations = 80(Granted Patents)


Location History:

  • Seattle, WA (US) (1988 - 1989)
  • Tigard, OR (US) (1987 - 1994)
  • Portland, OR (US) (2009)

Company Filing History:

goldMedal1 out of 12 
 
Wagner Electronic Products, Inc.
 patents
silverMedal6 out of 834,513 
Other
 patents

Years Active: 1987-2009

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7 patents (USPTO):Explore Patents
1. 7571554 - Heat recovery and ventilation system for dryers (2009-08-11),
2. 5276980 - Reversible conditioned air flow system (1994-01-11),
3. 5226244 - Circulating air dryer (1993-07-13),
4. 4953298 - Kiln controller (1990-09-04),
5. 4885863 - Fishing lure retriever (1989-12-12),
6. 4756112 - Fishing lure retriever (1988-07-12),
7. 4662083 - Ventilating system for dryers (1987-05-05),

Title: Michael M Sprague: Innovator in Drying Technology

Introduction

Michael M Sprague is a notable inventor based in Tigard, OR (US), recognized for his contributions to drying technology. He holds a total of 7 patents, showcasing his innovative approach to improving efficiency in drying processes.

Latest Patents

Among his latest inventions is a heat recovery and ventilation system for dryers. This system features a heat-recovery device that pre-heats make-up air using exhaust air from multiple drying chambers, such as dry kilns for lumber. The design includes ductwork that connects the drying chambers to the heat-recovery device in a parallel arrangement. Additionally, he developed a reversible conditioned air flow system for direct-fired kilns. This system utilizes a powered air-mover mechanism to create air circulation within the kiln, allowing for air movement in either direction.

Career Highlights

Throughout his career, Michael has worked with various companies, including Wagner Electronic Products, Inc. His work has significantly impacted the efficiency of drying technologies, particularly in the lumber industry.

Collaborations

Michael has collaborated with notable individuals such as John L Carter and Crosby Stone, contributing to advancements in his field.

Conclusion

Michael M Sprague's innovative patents and career achievements highlight his significant role in the development of drying technologies. His work continues to influence the industry, making processes more efficient and effective.

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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