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For the Inventor, By the Inventor

Madison, WI, United States of America

Sub-Zero Group, Inc.

USPTO Granted Patents = 41

Trademarks = 2

Forward Citations = 110

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35 inventors (with patents filed for the assignee):

goldMedal Curtis Leroy Cruver, Iv (22 out of 72 patents)

silverMedal Stephen Andrew Derfiny (18 out of 21 patents)

bronzeMedal Bronson Blum (6 out of 6 patents)

4.  Sean T Petersen (4 out of 15 patents)

5.  Brant David Springer (3 out of 3 patents)

6.  Keith R Wanta (3 out of 3 patents)

7.  Thomas Michael Lasecki (3 out of 3 patents)

8.  Keith Harold Roth (3 out of 3 patents)

9.  Alan C Wood (2 out of 6 patents)

10.  Mark R Eckert (2 out of 7 patents)

11.  Alexander R Krahn (2 out of 2 patents)

12.  Colin M Hasburgh (2 out of 2 patents)

13.  William Cesare Cesaroni (2 out of 50 patents)

14.  Terrence Hoffmann (2 out of 2 patents)

15.  Andrew R Huerth (2 out of 2 patents)


Core Competencies:
Ice Maker
Nugget Ice Maker
Control Knob
Humidity Control
Drawer Divider
Cleaning Fluid Drawer
Water Dispenser
Heated Door Glass
Adjustable Shelf Support
Ice Scoop Holder
Sliding Door
Shelf Light Assembly

41 patents:

1. D1154728 - Front panel for an ice maker (2026-10-20),
2. D1150156 - Drawer stack front panel set (2026-09-29),
3. 12736264 - Nugget ice maker (2026-09-15),
4. D1126258 - Front panel for an ice maker (2026-05-12),
5. D1084053 - Ice maker door and kick plate (2025-07-15),
6. 12359860 - Backstop for an ice maker (2025-07-15),
7. 12320455 - Hose with connector at intervals (2025-06-03),
8. D1059430 - Door shelf (2025-01-28),
9. D1059429 - Door shelf (2025-01-28),
10. D1059101 - Drawer divider walls (2025-01-28),
11. D1058616 - Shelf (2025-01-21),
12. D1051649 - Drawer (2024-11-19),
13. D1047628 - Ice scoop (2024-10-22),
14. 12111058 - Heated door glass for oven (2024-10-08),
15. D1041976 - Shelf nose (2024-09-17),
Company Overview
Sub-Zero Group, Inc. is a leading manufacturer specializing in high-end kitchen appliances, particularly refrigeration and cooking equipment. The company is renowned for its commitment to quality, innovation, and performance, offering products that blend advanced technology with elegant design. Headquartered in Madison, Wisconsin, Sub-Zero serves a global market, catering to both residential and commercial clients. Their focus on sustainability and energy efficiency reflects a dedication to modern culinary needs while maintaining a legacy of craftsmanship.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Sub-Zero Group, Inc. USPTO Patent Assignee Logo
41 Patents

#22 in Madison, WI

#209 in Wisconsin

#8,447 in US

#16,725 in the World

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

Sub-Zero Group, Inc.

Forward Citations = 110

35 inventors:

goldMedal Curtis Leroy Cruver, Iv (22 out of 72 patents)

silverMedal Stephen Andrew Derfiny (18 out of 21 patents)

bronzeMedal Bronson Blum (6 out of 6 patents)

4.  Sean T Petersen (4 out of 15 patents)

5.  Brant David Springer (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sub-Zero Group, Inc.. Retrieved from https://idiyas.com/company/sub-zero-group

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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