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For the Inventor, By the Inventor

Duncan, OK, United States of America

David Durward Szarka

USPTO Granted Patents = 61


 

Average Co-Inventor Count = 1.9

ph-index = 32

Forward Citations = 2,486(Granted Patents)

Forward Citations (Not Self Cited) = 2,328(Dec 10, 2025)


Inventors with similar research interests:


Company Filing History:

goldMedal31 out of 1,479 
 
Halliburton Company
 patents
silverMedal30 out of 11,795 
 
Halliburton Energy Services, Inc.
 patents
bronzeMedal1 out of 971 
 
Conocophillips Company
 patents
where one patent can have more than one assignee

Years Active: 1981-2016

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Areas of Expertise:
Riser Displacement Systems
Pressure Activated Systems
Expansion Tool
Cementing Operations
Subsurface Release Plug
Diverter Plugs
Equalizer Valve Assembly
Well Jetting Apparatus
Hydraulic Set Liner Hanger
Completion Tool Systems
Casing Cementer
Positioning Tools
61 patents (USPTO):Explore Patents
1. 9284795 - Riser displacement and cleaning systems and methods of use (2016-03-15),
2. 9238954 - Pressure activated down hole systems and methods (2016-01-19),
3. 9169721 - Expansion tool for non-cemented casing-casing annulus (CCA) wellbores (2015-10-27),
4. 9109437 - Method of using an expansion tool for non-cemented casing annulus (CCA) wellbores (2015-08-18),
5. 9033056 - Pressure activated down hole systems and methods (2015-05-19),
6. 8967255 - Subsurface release cementing plug (2015-03-03),
7. 8474530 - Method and apparatus for a high side orienting sub for multi-lateral installations (2013-07-02),
8. 8267174 - Internal retention mechanism (2012-09-18),
9. 7686092 - Plug systems and methods for using plugs in subterranean formations (2010-03-30),
10. 7673688 - Casing wiping dart with filtering layer (2010-03-09),
11. 7665520 - Multiple bottom plugs for cementing operations (2010-02-23),
12. 7584792 - Plug systems and methods for using plugs in subterranean formations (2009-09-08),
13. 7533729 - Reverse cementing float equipment (2009-05-19),
14. 7506686 - Diverter plugs for use in well bores and associated methods of use (2009-03-24),
15. 7350578 - Diverter plugs for use in well bores and associated methods of use (2008-04-01),

Title: The Innovative Journey of David Durward Szarka

Introduction: David Durward Szarka, a talented inventor hailing from Duncan, Oklahoma, has made significant contributions to the world of innovations with his creative mind and dedication to problem-solving.

Latest Patents: David Durward Szarka holds several patents in various fields, showcasing his versatility and ingenuity in inventing new solutions to complex challenges.

Career Highlights: Throughout his career, David Durward Szarka has demonstrated a keen ability to identify gaps in the market and develop groundbreaking inventions to fill those voids. His passion for innovation has led to the creation of several successful products that have improved the lives of many.

Collaborations: David Durward Szarka has collaborated with leading experts in the industry, including researchers, engineers, and scientists, to bring his inventions to life. These collaborations have been instrumental in the success of his projects and have helped him push the boundaries of what is possible.

Conclusion: In conclusion, David Durward Szarka's innovative spirit and relentless drive to create have established him as a respected figure in the world of inventions. His contributions have left a lasting impact on various industries, and his legacy as an inventor continues to inspire future generations to think outside the box and pursue their innovative ideas.

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