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For the Inventor, By the Inventor

Freeport, IL, United States of America

Calphalon Corporation


USPTO Granted Patents = 89

% Expired Patents = 1.1



Trademarks = 7

Forward Citations = 1,556

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31 inventors (with patents filed for the assignee):

goldMedal Joel Tetreault (42 out of 42 patents)

silverMedal Paul Angelo Logiudice (16 out of 17 patents)

bronzeMedal Sarah Pantaleo (15 out of 16 patents)

4.  Andrew Q Liu (14 out of 15 patents)

5.  Steven J Muske (14 out of 18 patents)

6.  Lars Blacken (13 out of 13 patents)

7.  Brian Joseph Demers (7 out of 36 patents)

8.  Steve Muske (6 out of 6 patents)

9.  Kevin O'Doherty (5 out of 7 patents)

10.  Liu Wai Hung (5 out of 5 patents)

11.  Lee Chak Por (5 out of 5 patents)

12.  Neil John Varlamoff (4 out of 16 patents)

13.  Dean Olaya (3 out of 3 patents)

14.  Joanna Gail Kucko (3 out of 3 patents)

15.  Jeremy Bunting (3 out of 3 patents)


Core Competencies:
Knife Block
Cookware Handle
Waffle Maker
Slow Cooker
Electric Skillet
Food Grater
Cutlery Implement
Egg Poacher
Toaster Oven
Gripping Portion
Contact Grill
Baking Tool Handle

89 patents:

1. D920053 - Knife block (2021-05-25),
2. 11000141 - Knife block with storage slot blade sharpeners and cutlery set using same (2021-05-11),
3. 10638863 - Knife block with storage slot blade sharpeners and cutlery set using same (2020-05-05),
4. 10486857 - Stackable cookware and lids (2019-11-26),
5. D832660 - Knife block (2018-11-06),
6. D832659 - Knife block (2018-11-06),
7. D832658 - Knife block (2018-11-06),
8. 9693644 - Knife block with storage slot blade sharpeners and cutlery set using same (2017-07-04),
9. D766048 - Knife block (2016-09-13),
10. D766047 - Knife block (2016-09-13),
11. D764879 - Knife block (2016-08-30),
12. D764878 - Knife block (2016-08-30),
13. D764877 - Knife block (2016-08-30),
14. D764876 - Knife block (2016-08-30),
15. D764875 - Knife block (2016-08-30),
Calphalon Corporation, headquartered in Freeport, Illinois, specializes in the design and manufacture of high-quality cookware and kitchen tools. The company is renowned for its innovative products, including knife blocks, cookware handles, waffle makers, slow cookers, electric skillets, food graters, cutlery implements, and egg poachers. With a commitment to enhancing culinary experiences, Calphalon focuses on combining functionality with modern design, catering to both home cooks and professional chefs alike.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Calphalon Corporation
89 Patents

#3 in Freeport, IL

#240 in Illinois

#4,189 in US

#8,597 in the World

Freeport, IL (US)
Freeport, IL, United States of America

Calphalon Corporation

Forward Citations = 1,556

31 inventors:

goldMedal Joel Tetreault (42 out of 42 patents)

silverMedal Paul Angelo Logiudice (16 out of 17 patents)

bronzeMedal Sarah Pantaleo (15 out of 16 patents)

4.  Andrew Q Liu (14 out of 15 patents)

5.  Steven J Muske (14 out of 18 patents)

Please report any incorrect information to [email protected]
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