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For the Inventor, By the Inventor

Milwaukee, WI, United States of America

A.o. Smith Corporation


USPTO Granted Patents = 382

% Expired Patents = 12.0



Trademarks = 62

Forward Citations = 4,556

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332 inventors (with patents filed for the assignee):

goldMedal Brian Thomas Branecky (38 out of 46 patents)

silverMedal Dan Mircea Ionel (26 out of 34 patents)

bronzeMedal Stephen J Dellinger (17 out of 19 patents)

4.  Alan Edward Lesak (16 out of 18 patents)

5.  William Louis Mehlhorn (15 out of 23 patents)

6.  Terry G Phillips (13 out of 22 patents)

7.  Chih Min Lin (13 out of 18 patents)

8.  Timothy H Houle (12 out of 13 patents)

9.  Dayan Bi (11 out of 11 patents)

10.  Wade C Patterson (11 out of 42 patents)

11.  William James Watkins (10 out of 14 patents)

12.  Robert E Lykes (10 out of 10 patents)

13.  James L King (10 out of 22 patents)

14.  Phillip C Ruehl (9 out of 16 patents)

15.  Norman Richard Long (9 out of 9 patents)


Core Competencies:
Water Heater
Filtration System
Tankless Design
Thermal Storage
Gas Water Heating
Heat Pump
UV Sterilization
Condensing Heat Exchanger
Control Method
Anode Control
Flow Sensor
Water Purifier

382 patents:

1. 12729879 - Tank water heater and water heating system (2026-09-08),
2. 12680727 - Fluid heating system with combustion trim learning (2026-07-14),
3. 12663182 - Flexible connectors for water heater (2026-06-23),
4. 12594527 - Method of making a cartridge filter (2026-04-07),
5. D1116032 - Set of water line connections for a water heater (2026-03-03),
6. 12553643 - Water heater dip tube (2026-02-17),
7. 12515214 - Water softener system and method of operating the same (2026-01-06),
8. 12467658 - Diffuser for thermal storage tank (2025-11-11),
9. 12442561 - Water heating system and method of operating the same (2025-10-14),
10. D1093558 - Set of water line connections for a water heater (2025-09-16),
11. 12313299 - Water heater with reserve capacity, and method of operating the same (2025-05-27),
12. 12202745 - UV LED sterilizing tank (2025-01-21),
13. 12179166 - Media tank (2024-12-31),
14. 12098867 - Water heating system and method of operating the same (2024-09-24),
15. D1041985 - Countertop pitcher water filter (2024-09-17),
A. O. Smith Corporation is a leading manufacturer of residential and commercial water heaters, boilers, and water treatment products. With a history dating back to 1874, the company is committed to delivering high-quality, innovative solutions for water heating and purification. A. O. Smith operates globally and is known for its reliable and energy-efficient products, backed by exceptional customer service.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

A.o. Smith Corporation
382 Patents

#5 in Milwaukee, WI

#23 in Wisconsin

#1,208 in US

#2,414 in the World

Milwaukee, WI (US)
Milwaukee, WI, United States of America

A.o. Smith Corporation

Forward Citations = 4,556

332 inventors:

goldMedal Brian Thomas Branecky (38 out of 46 patents)

silverMedal Dan Mircea Ionel (26 out of 34 patents)

bronzeMedal Stephen J Dellinger (17 out of 19 patents)

4.  Alan Edward Lesak (16 out of 18 patents)

5.  William Louis Mehlhorn (15 out of 23 patents)

Please report any incorrect information to [email protected]
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