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For the Inventor, By the Inventor

Walla Walla, WA, United States of America

Key Technology Corporation


USPTO Granted Patents = 93

% Expired Patents = 36.6



Trademarks = 19

Forward Citations = 976

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125 inventors (with patents filed for the assignee):

goldMedal Timothy Justice (16 out of 16 patents)

silverMedal Johan Calcoen (15 out of 16 patents)

bronzeMedal Gerald Ray Richert (15 out of 15 patents)

4.  Dirk Adams (8 out of 13 patents)

5.  David W Hufford (8 out of 12 patents)

6.  Dean D Dunham (7 out of 7 patents)

7.  Christopher A Woiler (7 out of 7 patents)

8.  Peter T Jones (7 out of 7 patents)

9.  Eugene Groenewald (6 out of 6 patents)

10.  Cliff J Leidecker (5 out of 12 patents)

11.  James Dale Ruff (5 out of 7 patents)

12.  Marc Van Daele (4 out of 4 patents)

13.  Peter Lodewyckx (4 out of 4 patents)

14.  Robert E Jones (4 out of 4 patents)

15.  Michael T Jones (4 out of 4 patents)


Core Competencies:
Sorting Apparatus
Vibratory Conveyor
Object Detection
Inspection Methods
Cutting Apparatus
Diverter Assembly
Quality Regulating
Conveying Apparatus
Electromagnetic Emitters
Spectral Manipulation
Size Grader
High Speed Sorting

93 patents:

1. 12567279 - Methods and apparatus for inspecting and sorting (2026-03-03),
2. 11995912 - Apparatus for inspecting and sorting (2024-05-28),
3. 11745224 - Method and apparatus for sorting (2023-09-05),
4. 11577918 - Product diverter for a reciprocally movable conveying device (2023-02-14),
5. 11446707 - Method and apparatus for sorting (2022-09-20),
6. 11334741 - Method and apparatus for inspecting and sorting (2022-05-17),
7. 10850930 - Product diverter for a reciprocally movable conveying device (2020-12-01),
8. 10621406 - Method of sorting (2020-04-14),
9. 10500753 - Method of cutting and cutting apparatus using high pressure liquid (2019-12-10),
10. 10486199 - Method and apparatus for sorting having a background element with a multiplicity of selective energizable electromagnetic emitters (2019-11-26),
11. 10478863 - Method and apparatus for sorting (2019-11-19),
12. 10478862 - Method and apparatus for sorting (2019-11-19),
13. 10449573 - Sorting apparatus (2019-10-22),
14. 10363582 - Method and apparatus for sorting (2019-07-30),
15. 10293379 - Object detection method (2019-05-21),
Key Technology Corporation, based in Walla Walla, WA, specializes in advanced sorting technology designed to enhance food processing and industrial applications. The company develops innovative solutions including sorting apparatus, vibratory conveyors, and cutting apparatus, focusing on object detection and inspection methods to ensure product quality. Their expertise extends to diverter assemblies and quality regulating systems, making them a leader in optimizing conveying processes and improving operational efficiency across various sectors.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Key Technology Corporation
93 Patents

#2 in Walla Walla, WA

#72 in Washington

#4,023 in US

#8,271 in the World

Walla Walla, WA (US)
Walla Walla, WA, United States of America

Key Technology Corporation

Forward Citations = 976

125 inventors:

goldMedal Timothy Justice (16 out of 16 patents)

silverMedal Johan Calcoen (15 out of 16 patents)

bronzeMedal Gerald Ray Richert (15 out of 15 patents)

4.  Dirk Adams (8 out of 13 patents)

5.  David W Hufford (8 out of 12 patents)

Please report any incorrect information to [email protected]
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