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For the Inventor, By the Inventor

Pasadena, CA, United States of America

Tsann Kuen USA Inc.

USPTO Granted Patents = 46

% Expired Patents = 43.5

Forward Citations = 1,135

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15 inventors (with patents filed for the assignee):

goldMedal Tsan-Kuen Wu (32 out of 43 patents)

silverMedal Michael G Hu (5 out of 6 patents)

bronzeMedal Robert W Johnson (4 out of 10 patents)

4.  Michael W Boehm (4 out of 4 patents)

5.  Chien-Chang Chen (2 out of 8 patents)

6.  Yuan-Song Tsai (2 out of 2 patents)

7.  Chi-Ting Chen (1 out of 3 patents)

8.  Po-Wen Hsiao (1 out of 1 patent)

9.  Chin-Cheng Chiu (1 out of 1 patent)

10.  Tsan Kuen Wu (1 out of 1 patent)

11.  Simon Ming-Jen Huang (1 out of 1 patent)

12.  Ming-Jen Huang (1 out of 2 patents)

13.  Chung-Pin Chiou (1 out of 2 patents)

14.  Yuan-Liang Yu (1 out of 2 patents)

15.  Jared B Wilson (1 out of 1 patent)


Core Competencies:
Barbecue Grill
Electric Toaster
Brewing Apparatus
Grill Device
Cooking Temperature Control
Electric Grill Plate
Fruit Squeezer
Coffee Maker
Electrical Cooker
Table Top Grill
Combination Appliance
Cooking Device

46 patents:

1. RE40285 - Grill device (2008-05-05),
2. 6739329 - Barbecue device (2004-05-25),
3. 6694964 - Barbecue grill assembly with a foldable side rack (2004-02-24),
4. 6684877 - Barbecue device (2004-02-03),
5. 6595111 - Electric toaster (2003-07-22),
6. 6571687 - Electric toaster (2003-06-03),
7. 6553895 - Brewing apparatus for electric coffee maker (2003-04-29),
8. 6546925 - Barbecue grill assembly (2003-04-15),
9. D472097 - Griller (2003-03-26),
10. 6513515 - Barbecue grill assembly with a casing (2003-02-04),
11. D466260 - Electric iron (2002-11-27),
12. D465691 - Griller (2002-11-20),
13. 6472644 - Grill device with a safety unit for ensuring electrical disconnection when two grill units are separated (2002-10-29),
14. D464230 - Griller (2002-10-16),
15. D463950 - Griller (2002-10-09),
Company Overview
Tsann Kuen USA Inc., based in Pasadena, California, specializes in the design and manufacture of a diverse range of consumer appliances. The company focuses on innovative kitchen solutions, including barbecue grill assemblies, electric toasters, brewing apparatuses, and waffle makers. With a commitment to enhancing culinary experiences, Tsann Kuen also develops pressing irons, electric countertop grills, and fruit squeezers, catering to the evolving needs of modern households and culinary enthusiasts.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

46 Patents

#8 in Pasadena, CA

#1,791 in California

#7,600 in US

#15,122 in the World

Pasadena, CA (US)
Pasadena, CA, United States of America

Tsann Kuen USA Inc.

Forward Citations = 1,135

15 inventors:

goldMedal Tsan-Kuen Wu (32 out of 43 patents)

silverMedal Michael G Hu (5 out of 6 patents)

bronzeMedal Robert W Johnson (4 out of 10 patents)

4.  Michael W Boehm (4 out of 4 patents)

5.  Chien-Chang Chen (2 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tsann Kuen USA Inc.. Retrieved from https://idiyas.com/company/tsann-kuen-usa

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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