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For the Inventor, By the Inventor

Saint Joseph, MI, United States of America

Leco Corporation


USPTO Granted Patents = 195

% Expired Patents = 6.2



Trademarks = 20

Forward Citations = 2,021

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103 inventors (with patents filed for the assignee):

goldMedal Anatoly N Verenchikov (44 out of 44 patents)

silverMedal Peter Markel Willis (27 out of 28 patents)

bronzeMedal Gordon C Ford (26 out of 27 patents)

4.  Viatcheslav Artaev (14 out of 14 patents)

5.  Roger L Bredeweg (11 out of 11 patents)

6.  Michael C Mason (10 out of 10 patents)

7.  Mikhail Yavor (9 out of 17 patents)

8.  Larry S O'Brien (9 out of 9 patents)

9.  George J Sitek (9 out of 9 patents)

10.  Mark Firmer Merrick (8 out of 8 patents)

11.  Anatoli N Verentchikov (8 out of 9 patents)

12.  Ted J Casper (8 out of 8 patents)

13.  Joel C Mitchell (8 out of 8 patents)

14.  Mark Russell Wheeler (7 out of 7 patents)

15.  Julie R Pitz (7 out of 7 patents)


Core Competencies:
Mass Spectrometer
Ion Trap
Electrostatic Trap
Time-of-Flight
Chromatography
Thermal Modulator
Data Acquisition
Soft Ionization
Multi-Reflecting
Gas Chromatography
Quantitative Analysis
Thermogravimetric Analyzer

195 patents:

1. 12730095 - Thermal modulator (2026-09-08),
2. 12540926 - Split flow modulator for comprehensive two-dimensional chromatography (2026-02-03),
3. 12442803 - Flow splitter for gas chromatography systems (2025-10-14),
4. 12140576 - Multi-dimensional chromatography modulator with variable modulation period (2024-11-12),
5. 12100584 - Methods and systems for multi-pass encoded frequency pushing (2024-09-24),
6. 12025595 - Thermal modulator (2024-07-02),
7. 11994501 - Method for ranking library hits in mass spectrometry (2024-05-28),
8. 11899033 - Access port for a thermogravimetric analyzer furnace (2024-02-13),
9. 11899032 - Molar transfer device (2024-02-13),
10. 11846614 - Thermal modulator (2023-12-19),
11. 11742192 - Electrostatic trap mass spectrometer with improved ion injection (2023-08-29),
12. 11726010 - Rotary dosing device (2023-08-15),
13. 11609212 - Chromatography system (2023-03-21),
14. 11397139 - Metallographic grinder and components thereof (2022-07-26),
15. 11391706 - Chromatography system (2022-07-19),
Leco Corporation, headquartered in Saint Joseph, Michigan, specializes in the development and manufacturing of advanced analytical instrumentation, particularly in the field of mass spectrometry. The company focuses on core technologies such as mass spectrometers, ion traps, and time-of-flight systems, which are essential for various applications in chemical analysis and material characterization. Leco's innovations also encompass chromatography, thermal modulation, and data acquisition, catering to diverse industries including environmental, food safety, and pharmaceuticals.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Leco Corporation
195 Patents

#1 in Saint Joseph, MI

#93 in Michigan

#2,108 in US

#4,314 in the World

Saint Joseph, MI (US)
Saint Joseph, MI, United States of America

Leco Corporation

Forward Citations = 2,021

103 inventors:

goldMedal Anatoly N Verenchikov (44 out of 44 patents)

silverMedal Peter Markel Willis (27 out of 28 patents)

bronzeMedal Gordon C Ford (26 out of 27 patents)

4.  Viatcheslav Artaev (14 out of 14 patents)

5.  Roger L Bredeweg (11 out of 11 patents)

Please report any incorrect information to [email protected]
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