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For the Inventor, By the Inventor

Whitinsville, MA, United States of America

Duracraft Corporation

USPTO Granted Patents = 135

% Expired Patents = 0.74

Forward Citations = 2,821

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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 17 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:
Humidifier
Portable Fan
Electric Heater
Air Cleaner
Window Fan
Evaporative Humidifier
Table Fan
Fan Housing
Vaporizer
High Velocity Fan
Portable Heater
Filtered Air Moving Apparatus

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),
Company Overview
Duracraft Corporation, based in Whitinsville, MA, specializes in the development and manufacturing of air treatment devices. The company focuses on creating innovative solutions for indoor air quality, including humidifiers, portable fans, electric heaters, and air cleaners. With a commitment to enhancing comfort and well-being, Duracraft's product range also features window fans, evaporative humidifiers, and various fan types, catering to diverse consumer needs in air management and climate control.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

135 Patents

#1 in Whitinsville, MA

#152 in Massachusetts

#2,882 in US

#5,991 in the World

Whitinsville, MA (US)
Whitinsville, MA, United States of America

Duracraft Corporation

Forward Citations = 2,821

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Duracraft Corporation. Retrieved from https://idiyas.com/company/duracraft

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

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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