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For the Inventor, By the Inventor

Minneapolis, MN, United States of America

Johnstech International Corporation


USPTO Granted Patents = 105



Trademarks = 23

Forward Citations = 726

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

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

9.  Mike W Andres (8 out of 8 patents)

10.  Brian Halvorson (7 out of 7 patents)

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

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

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

14.  Valts Treibergs (7 out of 7 patents)

15.  David T Skodje (6 out of 6 patents)


Core Competencies:
Integrated Circuit Testing
Spring Probe Contact Assembly
Compliant Ground Block
Test Pin
Waveguide Testing
High Isolation Contactor
Electrically Conductive Pins
Self Flattening Test Socket
Wafer Level Probe Array
Anti Pinching Contact
Contact Assembly Array
Low Resistance Test Pin

105 patents:

1. 12487279 - Housing with vertical backstop (2025-12-02),
2. D1090440 - Spring probe contact assembly (2025-08-26),
3. D1075695 - Contact pin for integrated circuit testing (2025-05-20),
4. D1074619 - Spring pin tip (2025-05-13),
5. D1044751 - Compliant ground block and testing system for testing integrated circuits (2024-10-01),
6. D1042357 - Anti pinching contact (2024-09-17),
7. D1042346 - Contact pin for integrated circuit testing (2024-09-17),
8. D1042345 - Test pin (2024-09-17),
9. D1042344 - Contact (2024-09-17),
10. D1015282 - Spring pin tip (2024-02-20),
11. 11906576 - Contact assembly array and testing system having contact assembly array (2024-02-20),
12. 11879925 - Over the air (OTA) chip testing system (2024-01-23),
13. 11867752 - Contact assembly and kelvin testing system having contact assembly (2024-01-09),
14. 11821943 - Compliant ground block and testing system having compliant ground block (2023-11-21),
15. 11802909 - Compliant ground block and testing system having compliant ground block (2023-10-31),
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 - Dec 9 2025

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105 Patents

#19 in Minneapolis, MN

#86 in Minnesota

#3,483 in US

#7,239 in the World

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Minneapolis, MN, United States of America

Johnstech International Corporation

Forward Citations = 726

58 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)

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