For the Inventor, By the Inventor

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Dallas, TX, United States of America

Indresco Inc.

USPTO Granted Patents = 38

CIPO Patents = 2

Trademarks = 2

Forward Citations = 277

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35 inventors (with patents filed for the assignee):

Mark C Langenohl (5 out of 8 patents)

Dwight S Whittemore (4 out of 6 patents)

Lawrence D Fitch (3 out of 4 patents)

4. Robert A Pennison (3 out of 9 patents)

5. Edward L Erny (2 out of 6 patents)

6. Richard E Eckman (2 out of 19 patents)

7. David R Sundell (2 out of 2 patents)

8. Stanley R Pavlica (2 out of 4 patents)

9. Albert L Renkey (2 out of 3 patents)

10. James T Hughes (2 out of 2 patents)

11. Stanley A Smith (2 out of 2 patents)

12. Richard J Knauss (2 out of 2 patents)

13. Mark R Bentley (2 out of 2 patents)

14. Robert N Anderson (2 out of 2 patents)

15. Gustav O Hughes (2 out of 2 patents)

Core Competencies:

Refractory Brick Design

Insulating Mixes

Magnesite-Carbon Refractories

High Alumina Shapes

Silicon Carbide Composition

Pumpable Castable

Cement-Free Monoliths

Air Tool Design

Connector Pin Assembly

Weight Measurement Device

Pneumatic Safety System

Sliding Seal

38 patents: Sort by Forward Citations

1. 5704184 - Impact pad for ladles (1998-01-06),

2. 5603759 - Stable, cement-bonded, overhead sprayed insulating mixes and resultant (1997-02-18),

3. 5591070 - Air tool with exhaust diverting valve (1997-01-07),

4. 5588903 - Ergonomic power tool (1996-12-31),

5. 5562880 - Refractory brick design for open end of refractory lined vessel (1996-10-08),

6. 5560892 - Apparatus system for beneficiation of kish graphite (1996-10-01),

7. 5549745 - Non-slumping, pumpable castable and method of applying the same (1996-08-27),

8. 5531279 - Sensor impulse unit (1996-07-02),

9. 5512325 - Non-slumping, pumpable castable and method of applying the same (1996-04-30),

10. 5438026 - Magnesite-carbon refractories and shapes made therefrom with improved (1995-08-01),

11. 5429722 - Magnesium electrolysis cell, lining therefor, and method (1995-07-04),

12. 5427360 - Refractory brick design for open end of refractory lined vessel (1995-06-27),

13. 5418199 - Refractory mix and shapes made therefrom (1995-05-23),

14. 5367798 - Connector pin assembly for bucket rigging (1994-11-29),

15. 5363995 - Slide gate plate and method (1994-11-15),

Company Overview

Indresco Inc., based in Dallas, TX, specializes in the development and manufacturing of advanced industrial solutions. The company focuses on innovative technologies that enhance operational efficiency across various sectors, including manufacturing and logistics. With a commitment to quality and sustainability, Indresco leverages cutting-edge research to deliver products that meet the evolving needs of its clients. The organization is dedicated to fostering technological advancements that drive productivity and improve overall performance in industrial applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

38 Patents

#48 in Dallas, TX

#502 in Texas

#9,020 in US

#17,831 in the World

Dallas, TX, United States of America

Indresco Inc.

Forward Citations = 277

35 inventors:

Mark C Langenohl (5 out of 8 patents)

Dwight S Whittemore (4 out of 6 patents)

Lawrence D Fitch (3 out of 4 patents)

4. Robert A Pennison (3 out of 9 patents)

5. Edward L Erny (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Indresco Inc.. Retrieved from https://idiyas.com/company/indresco

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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