IDiyas

For the Inventor, By the Inventor

St. Francis, WI, United States of America

Harnischfeger Corporation


USPTO Granted Patents = 184


Trademarks = 7

Forward Citations = 2,277

Loading Chart...
Loading Chart...

146 inventors (with patents filed for the assignee):

goldMedal Harvey J Kallenberger (19 out of 26 patents)

silverMedal Narahari Gattu (9 out of 9 patents)

bronzeMedal Roger D Luebke (8 out of 8 patents)

4.  Herbert D Long, Jr (6 out of 6 patents)

5.  Robert A Fritsch (6 out of 6 patents)

6.  George E Thorsen (5 out of 6 patents)

7.  Darryl R Immel (5 out of 5 patents)

8.  Ram N Rathi (5 out of 5 patents)

9.  Andrew P Dretzka (4 out of 4 patents)

10.  Max J Dechantsreiter (4 out of 4 patents)

11.  Lembit Vaerk (4 out of 4 patents)

12.  John E Wieschel (4 out of 4 patents)

13.  Lawrence A Millonzi (4 out of 4 patents)

14.  Dieter C Juergens (4 out of 4 patents)

15.  Rikos A Kasim (3 out of 10 patents)


Core Competencies:
Mining Shovel
Dragline
Overhead Crane
Blasthole Drill
Lifting Apparatus
Material-Handling Machine
Electrical Drive System
Welding Apparatus
Hoist Apparatus
Crane Mechanism
Retaining Device
Power Shovel

184 patents:

1. 6025686 - Method and system for controlling movement of a digging dipper (2000-02-15),
2. 5865557 - Clevis with improved pin locking assembly (1999-02-02),
3. 5815960 - Retarding mechanism for the dipper door of a mining shovel (1998-10-06),
4. 5791257 - Overhead crane with adjustable bearings (1998-08-11),
5. 5788096 - Material-handling machine with hinged leg (1998-08-04),
6. 5752334 - Dumping system for a dragline bucket (1998-05-19),
7. 5730855 - Hoist apparatus and method for positioning anode in smelting furnace (1998-03-24),
8. 5706736 - Polar crane and related method (1998-01-13),
9. 5676471 - Dragline with improved thrust bearing assembly supporting upper structure (1997-10-14),
10. 5662311 - Lifting apparatus including overload sensing device (1997-09-02),
11. 5657559 - Rigging assembly for an excavating bucket (1997-08-19),
12. 5653297 - Blasthole drill with improved automatic breakout wrench (1997-08-05),
13. 5642577 - Dragline with high headroom between upper and lower structures (1997-07-01),
14. 5636460 - Dragline with cantilevered side-access dump block (1997-06-10),
15. 5636459 - Dragline including improved boom (1997-06-10),
Harnischfeger Corporation is a global industrial equipment manufacturer, specializing in the design, manufacture, and distribution of heavy machinery. With over 100 years of experience, we offer innovative solutions for industries such as construction, mining, and material handling. Our products are known for their reliability, durability, and superior performance. Visit our website for more information.
This text is generated by artificial intelligence and may not be accurate.

logo

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

184 Patents

#1 in St. Francis, WI

#42 in Wisconsin

#2,133 in US

#4,411 in the World

...
St. Francis, WI, United States of America

Harnischfeger Corporation

Forward Citations = 2,277

146 inventors:

goldMedal Harvey J Kallenberger (19 out of 26 patents)

silverMedal Narahari Gattu (9 out of 9 patents)

bronzeMedal Roger D Luebke (8 out of 8 patents)

4.  Herbert D Long, Jr (6 out of 6 patents)

5.  Robert A Fritsch (6 out of 6 patents)

Please report any incorrect information to support@idiyas.com
Loading…