This inventor holds 26 USPTO granted patents and 1 published patent application, plus 4 CIPO patents and 3 EPO patents, primarily in Hearing Protection Devices. Top assignees: 3M Innovative Properties Company, Other. Active years: 1995-2023.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Alexandria, VA (US) (1995 - 2002)
- Canton, MI (US) (2006)
- Woodbury, MN (US) (2015 - 2023)
Company Filing History:
23 out of 22,398 
3 out of 834,513 Years Active: 1995-2023
Areas of Expertise:
Title: Douglas D. Fletcher: Innovator in Air Filter Technology
Introduction
Douglas D. Fletcher is a prolific inventor based in Woodbury, MN, with a significant contribution to the field of air filtration technology. With a total of 23 patents to his name, Fletcher has focused on innovations that improve the efficiency and monitoring of air filters, ensuring optimal performance in various air-handling systems.
Latest Patents
Among his latest innovations is the patent for an "Air Filter Condition Sensing" mechanism. This invention features an air filter that includes filter media, a sensor, and circuitry designed to receive data from the sensor regarding the condition of the filter media. This system is capable of wirelessly transmitting the data to a separate device equipped with a display, allowing users to receive real-time indications of the filter's condition. Another notable patent involves devices, systems, and methods for assessing the condition of air filter media in powered air-handling systems using pressure information from the system. These advancements provide users with critical information needed for maintaining air quality and filter effectiveness.
Career Highlights
Douglas D. Fletcher is currently associated with 3M Innovative Properties Company, where he has contributed his expertise in research and development. His work in this organization has been instrumental in pushing forward innovative solutions that address common challenges in air filtration.
Collaborations
Throughout his career, Fletcher has collaborated with talented professionals, including coworkers Oscar M. Hemberg and Eric O. Hemberg. These collaborations have helped enhance the quality and impact of his inventions, leading to advancements in air filter technology.
Conclusion
Douglas D. Fletcher stands out as a key figure in the realm of air filtration inventions. His commitment to innovation, along with his impressive patent portfolio, underscores his dedication to enhancing air quality through smart technological solutions. As an inventor, Fletcher continues to shape the future of air-handling systems, contributing valuable insights and advancements within the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile