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For the Inventor, By the Inventor

Sudbury, MA, United States of America

Duracraft Corporation


USPTO Granted Patents = 135

Trademarks = 2

Forward Citations = 2,760

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37 inventors (with patents filed for the assignee):

goldMedal Jui-Shang Wang (74 out of 98 patents)

silverMedal Bernard Chiu (50 out of 68 patents)

bronzeMedal Rodney B Jane (30 out of 43 patents)

4.  John E Longan (28 out of 44 patents)

5.  Stanley Gresens (27 out of 48 patents)

6.  Richard M O'Grady (25 out of 62 patents)

7.  Robert L Marvin, Jr (17 out of 28 patents)

8.  Gregory James Holderfield (14 out of 38 patents)

9.  Frank A Marino (10 out of 18 patents)

10.  Johnson Peng (9 out of 9 patents)

11.  John M Staton (8 out of 29 patents)

12.  Robert Marvin (6 out of 16 patents)

13.  Steven R Valentor (4 out of 7 patents)

14.  Diane Allen (3 out of 13 patents)

15.  Rodney Jane' (3 out of 8 patents)


Core Competencies:
Portable Electric Heater
Humidifier
Air Cleaner
Portable Electric Fan
Window Fan
High Velocity Fan
Evaporative Humidifier
Fan Housing
Portable Ceramic Heater
Console Humidifier
Swivel Mount Fan
Multiple Blade Fan

135 patents:

1. 6513861 - Protective device for an edge of a glass object (2003-02-04),
2. D421648 - Humidifier (2000-03-14),
3. D402749 - Shell for a portable electric heater (1998-12-15),
4. D398389 - Console humidifier (1998-09-15),
5. D395080 - Portable electric fan (1998-06-09),
6. D394702 - Humidifier (1998-05-26),
7. D393704 - Air cleaner (1998-04-21),
8. D391347 - Reflector for a portable heater (1998-02-24),
9. D390938 - Humidifier (1998-02-17),
10. D389235 - Window fan (1998-01-13),
11. D388869 - High velocity fan (1998-01-06),
12. D388511 - Humidifier housing unit (1997-12-30),
13. D388162 - Humidifier (1997-12-23),
14. D387152 - Portable electrical fan (1997-12-02),
15. D386579 - Front grill for a portable electric fan (1997-11-18),
Duracraft Corporation is a leading manufacturer of high-quality home appliances and household products. With over 50 years of experience in the industry, Duracraft has established itself as a trusted brand known for its durability, reliability, and innovation. Our wide range of products includes fans, humidifiers, air purifiers, heaters, and more. We focus on creating efficient and user-friendly solutions that enhance the comfort and well-being of our customers' homes. Visit our website to explore our product offerings and learn more about how Duracraft can improve your living environment.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

135 Patents

#1 in Sudbury, MA

#151 in Massachusetts

#2,764 in US

#5,810 in the World

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Sudbury, MA, United States of America

Duracraft Corporation

Forward Citations = 2,760

37 inventors:

goldMedal Jui-Shang Wang (74 out of 98 patents)

silverMedal Bernard Chiu (50 out of 68 patents)

bronzeMedal Rodney B Jane (30 out of 43 patents)

4.  John E Longan (28 out of 44 patents)

5.  Stanley Gresens (27 out of 48 patents)

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