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For the Inventor, By the Inventor

Evansville, IN, United States of America

George Koch Sons LLC


USPTO Granted Patents = 38

% Expired Patents = 7.9


Trademarks = 6

Forward Citations = 458

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39 inventors (with patents filed for the assignee):

goldMedal Robert L Koch, Ii (8 out of 9 patents)

silverMedal Kenneth N Kraft (4 out of 4 patents)

bronzeMedal James H Muehlbauer (4 out of 4 patents)

4.  Stanley E Williams (4 out of 4 patents)

5.  Gregory M Wallace (3 out of 3 patents)

6.  David W Carl (3 out of 3 patents)

7.  David C Siemers (3 out of 4 patents)

8.  Larry J Head (3 out of 3 patents)

9.  Jeffrey L Dexter (3 out of 3 patents)

10.  James M Gleason (2 out of 3 patents)

11.  Brian Thomas Hawkins (2 out of 2 patents)

12.  Larry J Schenk (2 out of 2 patents)

13.  Donald E Miller (2 out of 3 patents)

14.  David M Horton (2 out of 2 patents)

15.  J Steve Whitehead (2 out of 2 patents)


Core Competencies:
Parts Immersion Apparatus
Coating Objects
Curing System
Conveyor Line Control
Powder Coating Painting
Multi-Zone VOC Control
Flume Coater
Paint Spray Booth
Fluid Removing Apparatus
Radiation Curable Coating
Electrocoating Tank
Drying Oven

38 patents:

1. 7946302 - Parts immersion apparatus and method (2011-05-24),
2. 7455732 - Apparatus and systems for coating objects (2008-11-25),
3. 6699329 - Coating and curing system (2004-03-02),
4. 6675066 - Conveyor line process control system and method (2004-01-06),
5. 6120604 - Powder coating painting apparatus with universal modular line control (2000-09-19),
6. 5960930 - Power coating painting apparatus with conveyor synchronization and (1999-10-05),
7. 5921278 - Composite tank for industrial finishing equipment (1999-07-13),
8. 5755246 - Housing for industrial finishing equipment (1998-05-26),
9. 5749160 - Multi-zone method for controlling voc and nox emissions in a flatline (1998-05-12),
10. 5676755 - Flume coater (1997-10-14),
11. 5524361 - Flatline method of drying wafers (1996-06-11),
12. 5444922 - Corrugated product dryer (1995-08-29),
13. 5195437 - Conveyor system (1993-03-23),
14. 5147422 - Paint spray booth (1992-09-15),
15. 4972606 - Control damper for radiant oven (1990-11-27),
Company Overview
George Koch Sons LLC is a prominent manufacturer specializing in advanced finishing systems and equipment for various industries, including automotive, aerospace, and general manufacturing. The company is known for its innovative solutions in paint application, powder coating, and environmental control systems, ensuring high-quality finishes and efficient production processes. Based in Evansville, Indiana, George Koch Sons combines engineering expertise with a commitment to sustainability, providing tailored solutions that enhance operational efficiency and product quality.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

George Koch Sons LLC USPTO Patent Assignee Logo
38 Patents

#8 in Evansville, IN

#134 in Indiana

#9,020 in US

#17,831 in the World

Evansville, IN (US)
Evansville, IN, United States of America

George Koch Sons LLC

Forward Citations = 458

39 inventors:

goldMedal Robert L Koch, Ii (8 out of 9 patents)

silverMedal Kenneth N Kraft (4 out of 4 patents)

bronzeMedal James H Muehlbauer (4 out of 4 patents)

4.  Stanley E Williams (4 out of 4 patents)

5.  Gregory M Wallace (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: George Koch Sons LLC. Retrieved from https://idiyas.com/company/george-koch-sons

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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