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For the Inventor, By the Inventor

Portland, OR, United States of America

Esco Corp.


USPTO Granted Patents = 177



Trademarks = 37

Forward Citations = 5,528

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160 inventors (with patents filed for the assignee):

goldMedal Terry Lee Briscoe (38 out of 42 patents)

silverMedal Christopher M Carpenter (25 out of 44 patents)

bronzeMedal Larren F Jones (22 out of 22 patents)

4.  Robert K Emrich (14 out of 15 patents)

5.  Charles George Ollinger (14 out of 18 patents)

6.  Frederick C Hahn (14 out of 15 patents)

7.  Donald M Conklin (10 out of 16 patents)

8.  Robert McClanahan (9 out of 9 patents)

9.  Severn D Durand (8 out of 11 patents)

10.  James E Bearden (8 out of 9 patents)

11.  David M Graf (7 out of 9 patents)

12.  Kevin S Stangeland (6 out of 11 patents)

13.  Robert S Fleck (6 out of 6 patents)

14.  John S Kreitzberg (6 out of 6 patents)

15.  Dziugas Radzius (5 out of 6 patents)


Core Competencies:
Earth Working Equipment
Wear Parts Monitoring
Excavating Buckets
Shredding Machines
Wear Assembly
Dredge Cutterhead
Mineral Winning Pick
Coupling Assemblies
Wear Member
Dragline Bucket
Food Steaming Apparatus
Pinned Connections

177 patents:

1. 10030367 - Wear member for earth working equipment (2018-07-24),
2. 10024036 - Lock for a wear assembly (2018-07-17),
3. 10024033 - Wear part monitoring (2018-07-17),
4. 10022724 - Stepped shredder hammers (2018-07-17),
5. 10011975 - Monitoring ground-engaging products for earth working equipment (2018-07-03),
6. 9963853 - Lip for excavating bucket (2018-05-08),
7. 9915148 - Mineral winning pick, holder, and combination (2018-03-13),
8. 9855560 - Hammer for shredding machines (2018-01-02),
9. 9816254 - Wear assembly for use on earth working equipment (2017-11-14),
10. D792488 - Hammer for shredding machines (2017-07-18),
11. 9670649 - Wear part monitoring (2017-06-06),
12. 9650764 - Wear assembly for use on earth working equipment (2017-05-16),
13. 9561562 - Hardfaced wearpart using brazing and associated method and assembly for manufacturing (2017-02-07),
14. 9512600 - Coupling assemblies with enhanced take up (2016-12-06),
15. 9493930 - Lock for securing a wear assembly to excavating equipment (2016-11-15),
ESCO Corporation is a global leader in the production of highly engineered wear parts and replacement products used in mining, infrastructure development, oil and gas, and industrial applications. With over a century of experience, ESCO's solutions optimize efficiency and increase productivity for customers in various industries worldwide. The company's products range from cutting edges and crushers to ground engaging tools and buckets, supported by a team of experts and extensive distribution network.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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177 Patents

#8 in Portland, OR

#25 in Oregon

#2,201 in US

#4,572 in the World

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Portland, OR, United States of America

Esco Corp.

Forward Citations = 5,528

160 inventors:

goldMedal Terry Lee Briscoe (38 out of 42 patents)

silverMedal Christopher M Carpenter (25 out of 44 patents)

bronzeMedal Larren F Jones (22 out of 22 patents)

4.  Robert K Emrich (14 out of 15 patents)

5.  Charles George Ollinger (14 out of 18 patents)

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