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For the Inventor, By the Inventor

Wilmington, DE, United States of America

Aos Holding Company


USPTO Granted Patents = 83



Forward Citations = 979

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97 inventors (with patents filed for the assignee):

goldMedal Dennis R Hughes (18 out of 25 patents)

silverMedal Ray Oliver Knoeppel (13 out of 20 patents)

bronzeMedal Marc W Akkala (11 out of 15 patents)

4.  Kevin Mark Field (9 out of 9 patents)

5.  Thomas Gerard Van Sistine (6 out of 10 patents)

6.  Hyungsik Lee (5 out of 5 patents)

7.  Gary S Threatt (5 out of 6 patents)

8.  Herbert Edward Smith (4 out of 4 patents)

9.  R Dale Shropshire (4 out of 5 patents)

10.  Gregory Allen Reynolds (4 out of 4 patents)

11.  Mark A Murphy (4 out of 15 patents)

12.  Andrew Robert Caves (3 out of 3 patents)

13.  Andrew William Phillips (3 out of 10 patents)

14.  Robert Eugene Olson (3 out of 3 patents)

15.  Emadeddin Y Tanbour (3 out of 4 patents)


Core Competencies:
Water Heater
Gas Water Heater
Heating Device
Temperature Adjustable Mixing Valve
Corrosion-Resistant Heat Exchanger
Anti-Microbial Coatings
Fluid-Heating Apparatus
Leak Detection System
Combustion Chamber
Rooftop Water Heater
Safety Circuit
Water Storage Device

83 patents:

1. 10544962 - Water heater and method of operating the same (2020-01-28),
2. 9435565 - Water heater and method of operating the same (2016-09-06),
3. 9228746 - Heating device having a secondary safety circuit for a fuel line and method of operating the same (2016-01-05),
4. 8596226 - Water heater burner tube and door assembly (2013-12-03),
5. 8596225 - Anti-stacking pump assembly for a water heater and method of operating the same (2013-12-03),
6. 8375897 - Gas water heater (2013-02-19),
7. 8277912 - Organic polymer coatings for water containers (2012-10-02),
8. 8176937 - Temperature adjustable mixing valve (2012-05-15),
9. 8162232 - Water storage device having a powered anode (2012-04-24),
10. 8161918 - Water heater (2012-04-24),
11. 8113154 - Transition element for a passage in a water heater (2012-02-14),
12. 8111980 - Water heater and method of controlling the same (2012-02-07),
13. 8068727 - Storage-type water heater having tank condition monitoring features (2011-11-29),
14. 8047164 - Removable heat exchanger for a gas fired water heater (2011-11-01),
15. 8047163 - Gas water heater with harmful gas monitoring and warning functions and the method of monitoring and warning (2011-11-01),
AOS HOLDING COMPANY is a multinational conglomerate that operates in various industries such as technology, healthcare, real estate, and energy. With a diverse portfolio of subsidiaries, AOS has firmly established itself as a leader in innovation and strategic investments. The company aims to create long-term value for its stakeholders through a combination of organic growth and strategic acquisitions. Visit our website to learn more about our operations and expertise.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

83 Patents

#66 in Wilmington, DE

#85 in Delaware

#4,319 in US

#8,901 in the World

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Wilmington, DE, United States of America

Aos Holding Company

Forward Citations = 979

97 inventors:

goldMedal Dennis R Hughes (18 out of 25 patents)

silverMedal Ray Oliver Knoeppel (13 out of 20 patents)

bronzeMedal Marc W Akkala (11 out of 15 patents)

4.  Kevin Mark Field (9 out of 9 patents)

5.  Thomas Gerard Van Sistine (6 out of 10 patents)

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