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For the Inventor, By the Inventor

Minneapolis, MN, United States of America

Johnstech International Corporation


USPTO Granted Patents = 114

% Expired Patents = 19.3


Trademarks = 19

Forward Citations = 794

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55 inventors (with patents filed for the assignee):

goldMedal Jeffrey C Sherry (36 out of 36 patents)

silverMedal David A Johnson (29 out of 32 patents)

bronzeMedal John E Nelson (26 out of 26 patents)

4.  Michael W Andres (18 out of 18 patents)

5.  Gary William Michalko (15 out of 16 patents)

6.  Brian Warwick (13 out of 14 patents)

7.  Valts Treibergs (11 out of 14 patents)

8.  Sarosh M Patel (10 out of 14 patents)

9.  Mike W Andres (9 out of 9 patents)

10.  Russell F Oberg (8 out of 10 patents)

11.  Brian Halvorson (7 out of 7 patents)

12.  Patrick J Alladio (7 out of 8 patents)

13.  Joel N Erdman (7 out of 10 patents)

14.  Eric V Kline (7 out of 7 patents)

15.  Melissa Hasskamp (7 out of 7 patents)


Core Competencies:
Integrated Circuit
Spring Probe
Kelvin Testing
Test Pin
Compliant Ground Block
Microcircuit Tester
Contact Assembly
Waveguide Testing
Electrically Conductive Pins
High Isolation Contactor
Wafer Level Probes
Contact Pin

114 patents:

1. D1121579 - Ground block for integrated circuits (2026-04-07),
2. 12596136 - Spring probe assembly for a Kelvin testing system (2026-04-07),
3. D1117094 - Spring probe contact (2026-03-10),
4. D1117093 - Spring probe contact (2026-03-10),
5. D1117092 - Spring probe contact (2026-03-10),
6. D1117091 - Spring probe (2026-03-10),
7. D1117077 - Spring probe contact (2026-03-10),
8. D1110964 - Pin for IC testing device (2026-02-03),
9. D1110279 - Contact pin for integrated circuit testing (2026-01-27),
10. 12487279 - Housing with vertical backstop (2025-12-02),
11. D1090440 - Spring probe contact assembly (2025-08-26),
12. D1075695 - Contact pin for integrated circuit testing (2025-05-20),
13. D1074619 - Spring pin tip (2025-05-13),
14. D1044751 - Compliant ground block and testing system for testing integrated circuits (2024-10-01),
15. D1042357 - Anti pinching contact (2024-09-17),
Johnstech International Corporation is a global leader in the design and manufacturing of high-performance testing solutions for the semiconductor industry. With over 30 years of experience, the company provides innovative solutions that enable precise and reliable testing of semiconductor devices. Their wide range of products includes advanced contactors, test sockets, and measurement solutions that cater to the needs of leading semiconductor manufacturers worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

Johnstech International Corporation
114 Patents

#19 in Minneapolis, MN

#82 in Minnesota

#3,358 in US

#6,922 in the World

Minneapolis, MN (US)
Minneapolis, MN, United States of America

Johnstech International Corporation

Forward Citations = 794

55 inventors:

goldMedal Jeffrey C Sherry (36 out of 36 patents)

silverMedal David A Johnson (29 out of 32 patents)

bronzeMedal John E Nelson (26 out of 26 patents)

4.  Michael W Andres (18 out of 18 patents)

5.  Gary William Michalko (15 out of 16 patents)

Please report any incorrect information to [email protected]
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