Toronto, Canada

Douglas R Hart

This inventor holds 7 USPTO granted patents, plus 1 CIPO patent. Top assignees: Landus Inc., Other. Active years: 1980-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Douglas R Hart. Retrieved from https://idiyas.com/inventor/douglas-r-hart

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 = 1.3

ph-index = 7

Forward Citations = 191(Granted Patents)


Company Filing History:


Years Active: 1980-1998

Loading Chart...
Loading Chart...
7 patents (USPTO):Explore Patents

Title: Innovations by Douglas R Hart

Introduction

Douglas R Hart is a notable inventor based in Toronto, Canada. He has made significant contributions to the field of technology, holding a total of 7 patents. His work primarily focuses on improving efficiency and functionality in various systems.

Latest Patents

One of Hart's latest patents is a method and apparatus designed to provide freeze protection for solar water heating systems. This invention prevents freezing in the piping and tank of a solar water heating system mounted above a heated space. The system utilizes the supply and return piping in conjunction with a heat exchanger to create a mechanism for gentle water circulation through natural convection, effectively preventing freezing. Another significant patent is an automatic cycle terminator for dryers. This control device can interrupt power to a dryer when the load is dry, using the pattern of power consumption to determine the cycle termination point. This innovation optimizes the drying process and can be integrated directly into dryers during manufacturing.

Career Highlights

Throughout his career, Douglas R Hart has worked with various companies, including Landus Inc. His inventions reflect a commitment to enhancing everyday appliances and systems, showcasing his innovative spirit.

Collaborations

Some of Hart's notable coworkers include David M Jones and Donald A Urquhart. Their collaboration has likely contributed to the development of his impactful inventions.

Conclusion

Douglas R Hart's contributions to technology through his patents demonstrate his innovative approach to solving practical problems. His work continues to influence the efficiency of modern systems and appliances.

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]
Loading…