Pittsburgh, PA, United States of America

H Douglas Dahl

This inventor holds 1 USPTO granted patent. Top assignee: Conoco Inc.. Active years: 1981.

IDiyas Innovation Intelligence. (2026). Inventor Profile: H Douglas Dahl. Retrieved from https://idiyas.com/inventor/h-douglas-dahl-0a8q9vou

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 20(Granted Patents)


Company Filing History:


Years Active: 1981

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1 patent (USPTO):Explore Patents

Title: H Douglas Dahl: Innovator in Coal Seam Fracturing

Introduction

H Douglas Dahl is a notable inventor based in Pittsburgh, PA. He has made significant contributions to the field of coal seam fracturing, particularly with his innovative approach to enhancing gas permeability in coal seams. His work has implications for energy extraction and resource management.

Latest Patents

Dahl holds a patent for a method titled "Pretreatment for Fracturing Coal Seams." This patent involves a pretreatment process that enhances the effectiveness of fracturing coal seams by injecting a material capable of swelling coal. The swelling action closes natural cleats within the coal, thereby improving gas permeability and facilitating more efficient extraction.

Career Highlights

Dahl's career is marked by his association with Conoco Inc., where he has applied his expertise in coal seam technology. His innovative methods have contributed to advancements in the energy sector, particularly in the extraction of natural gas from coal seams.

Collaborations

Dahl has worked alongside notable colleagues such as Raymond L Mazza and Ronald W Umphrey. Their collaborative efforts have furthered research and development in coal seam technologies.

Conclusion

H Douglas Dahl's contributions to coal seam fracturing represent a significant advancement in energy extraction techniques. His innovative patent and collaboration with industry professionals highlight his impact on the field.

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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