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For the Inventor, By the Inventor

Houston, TX, United States of America

George Leo Stegemeier

This inventor holds 116 USPTO granted patents and 1 published patent application, plus 3 CIPO patents, primarily in In Situ Thermal Processing (CPC class E21B4-324). Top assignees: Shell Oil Comapny, The University of Texas System, Other. Active years: 1986-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: George Leo Stegemeier. Retrieved from https://idiyas.com/inventor/george-leo-stegemeier

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

USPTO Granted Patents = 116 

% Patents Active = 41.4

 

Average Co-Inventor Count = 6.0

ph-index = 97

Forward Citations = 22,024(Granted Patents)

Forward Citations (Not Self Cited) = 19,662(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • all Houston, TX (US) (1994)
  • Houston, TX (US) (1986 - 2014)

Company Filing History:

goldMedal104 out of 7,646 
 
Shell Oil Comapny
 patents
silverMedal10 out of 5,640 
 
The University of Texas System
 patents
bronzeMedal2 out of 834,570 
Other
 patents

Years Active: 1986-2014

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Areas of Expertise:
Hydrocarbon Recovery
Thermal Processing
Soil Remediation
Fluid Injectivity
Oil Shale Formation
Tar Sands
Pressure Control
Gas-Lift Well
Heating Elements
Synthesis Gas Production
Downhole Control
Diatomite Formation
116 patents (USPTO):Explore Patents
1. 8789586 - In situ recovery from a hydrocarbon containing formation (2014-07-29),
2. 8485252 - In situ recovery from a hydrocarbon containing formation (2013-07-16),
3. 8225866 - In situ recovery from a hydrocarbon containing formation (2012-07-24),
4. 8191630 - Creating fluid injectivity in tar sands formations (2012-06-05),
5. 7860377 - Subsurface connection methods for subsurface heaters (2010-12-28),
6. 7798221 - In situ recovery from a hydrocarbon containing formation (2010-09-21),
7. 7730947 - Creating fluid injectivity in tar sands formations (2010-06-08),
8. 7717171 - Moving hydrocarbons through portions of tar sands formations with a fluid (2010-05-18),
9. 7644765 - Heating tar sands formations while controlling pressure (2010-01-12),
10. 7549470 - Solution mining and heating by oxidation for treating hydrocarbon containing formations (2009-06-23),
11. 7534926 - Soil remediation using heated vapors (2009-05-19),
12. 7322410 - Controllable production well packer (2008-01-29),
13. 7259688 - Wireless reservoir production control (2007-08-21),
14. 7225866 - In situ thermal processing of an oil shale formation using a pattern of heat sources (2007-06-05),
15. 7147059 - Use of downhole high pressure gas in a gas-lift well and associated methods (2006-12-12),

Title: Unveiling the Innovator: George Leo Stegemeier

Introduction: George Leo Stegemeier, a prolific inventor hailing from the vibrant city of Houston, TX, USA, has left an indelible mark in the field of patents with an impressive total of 116 to his name.

Latest Patents: Stegemeier's recent patents showcase his groundbreaking work in the realm of in situ recovery from hydrocarbon-containing formations. His innovative processes involve the application of thermal treatments to oil shale formations, effectively harnessing the pyrolysis of hydrocarbons to extract valuable resources.

Career Highlights: With a rich professional journey, Stegemeier's expertise has been honed through his tenure at esteemed institutions such as Shell Oil Company and the University of Texas System. His contributions have not only revolutionized the energy sector but have also paved the way for sustainable practices in hydrocarbon extraction.

Collaborations: Throughout his career, Stegemeier has fostered fruitful collaborations with industry stalwarts, including Harold J. Vinegar and Scott Lee Wellington. These partnerships have not only propelled innovation but have also exemplified the power of collective ingenuity in driving technological advancements.

Conclusion: George Leo Stegemeier's relentless pursuit of innovation and commitment to excellence have solidified his position as a trailblazer in the world of patents. His pioneering work continues to inspire generations of inventors, shaping the landscape of technological progress for years to come.

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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