For the Inventor, By the Inventor

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Hiawatha, IA, United States of America

Crystal Group, Inc.

USPTO Granted Patents = 34

% Expired Patents = 5.9

Trademarks = 4

Forward Citations = 189

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34 inventors (with patents filed for the assignee):

David T Medin (11 out of 13 patents)

James E Shaw (8 out of 10 patents)

John R Bodensteiner (7 out of 7 patents)

4. Curtis R Nelson (6 out of 7 patents)

5. Matthew J Poduska (5 out of 11 patents)

6. Christopher M Jensen (4 out of 5 patents)

7. Todd A Hermanson (4 out of 4 patents)

8. Robert Dean Hinds (4 out of 4 patents)

9. Scott L Kayser (4 out of 4 patents)

10. Craig J Jensen (4 out of 5 patents)

11. Moji Hosseini (3 out of 3 patents)

12. Norman Boulard (3 out of 9 patents)

13. Steven R Waller (3 out of 3 patents)

14. Brad Patrick McDermott (2 out of 5 patents)

15. Alvin Derouen (2 out of 2 patents)

Core Competencies:

Tamper Response

Zeroization

Heat Sink

EMC Compliance

Data Sanitize

Memory Module

Environmental Monitor

Industrial PC

Cable Retention

Kinematic Environments

Power Supply

Personal Computer

34 patents: Sort by Forward Citations

1. 12664295 - Tamper and zeroization response unit (2026-06-23),

2. 12635110 - Dual inline memory module heat sink for conduction cooled environments (2026-05-19),

3. 11864338 - Apparatus and method for utilizing commercial off the shelf circuit boards in a highly kinematic environment (2024-01-02),

4. 11675524 - Isolated hardware data sanitize system and method (2023-06-13),

5. 10998671 - DIMM/expansion card retention method for highly kinematic environments (2021-05-04),

6. 10782755 - System and method for creating high powered EMC compliant power supply for industrial and military applications (2020-09-22),

7. 10734756 - DIMM/expansion card retention method for highly kinematic environments (2020-08-04),

8. 10729046 - Apparatus and method for utilizing commercial off the shelf circuit boards in a highly kinematic environment (2020-07-28),

9. 10193248 - System and method for retaining memory modules (2019-01-29),

10. 9820419 - Apparatus and method for utilizing commercial off the shelf circuit boards in a highly kinematic environment (2017-11-14),

11. 9535475 - System and method for creating high powered EMC compliant power supply for industrial and military applications (2017-01-03),

12. 8529285 - Cable retention clip for rugged applications (2013-09-10),

13. 7310750 - Method and system for extending the functionality of an environmental monitor for an industrial personal computer (2007-12-18),

14. 7191274 - Method and system for providing independent server functionality in a single personal computer (2007-03-13),

15. 7000010 - System and method for caching web pages on a management appliance for personal computers (2006-02-14),

Crystal Group, Inc. specializes in the design and manufacturing of rugged computing solutions tailored for demanding environments. With a focus on high-performance computing, the company serves sectors such as defense, aerospace, and industrial applications. Their products include servers, workstations, and storage solutions that are engineered to withstand extreme conditions while delivering reliable performance. Headquartered in Hiawatha, Iowa, Crystal Group is committed to innovation and quality in the rugged technology space.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Crystal Group, Inc.

34 Patents

#1 in Hiawatha, IA

#61 in Iowa

#10,002 in US

#19,612 in the World

Hiawatha, IA, United States of America

Crystal Group, Inc.

Forward Citations = 189

34 inventors:

David T Medin (11 out of 13 patents)

James E Shaw (8 out of 10 patents)

John R Bodensteiner (7 out of 7 patents)

4. Curtis R Nelson (6 out of 7 patents)

5. Matthew J Poduska (5 out of 11 patents)

Please report any incorrect information to [email protected]

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