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For the Inventor, By the Inventor

Carrollton, TX, United States of America

Varel International Ind., L.p.

USPTO Granted Patents = 89

% Expired Patents = 60.7



Trademarks = 14

Forward Citations = 291

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55 inventors (with patents filed for the assignee):

goldMedal William W King (13 out of 52 patents)

silverMedal Federico Bellin (11 out of 29 patents)

bronzeMedal Alfazazi Dourfaye (10 out of 21 patents)

4.  Thomas Gallifet (9 out of 9 patents)

5.  Michael R Reese (8 out of 50 patents)

6.  David Michael Harrington (8 out of 8 patents)

7.  Vamsee Chintamaneni (7 out of 7 patents)

8.  Xiaobin Lu (7 out of 9 patents)

9.  Charles Daniel Johnson (6 out of 6 patents)

10.  Steven Wayne Drews (6 out of 9 patents)

11.  David Michel Harrington (6 out of 6 patents)

12.  Bruno Cuillier De Maindreville (5 out of 12 patents)

13.  Matthew Charles Stroever (5 out of 5 patents)

14.  Anthony Stuart Plana (5 out of 5 patents)

15.  Michel De Reynal (5 out of 8 patents)


Core Competencies:
Drill Bits
PDC Cutters
Hybrid Designs
Superabrasive Cutters
Percussion Tools
Erosion Resistance
Thermal Stability
Sealing Mechanisms
Wear Resistant Materials
Rock Bits
Downhole Tools
Cutting Structures

89 patents:

1. 11060356 - Superabrasive cutters for earth boring bits with multiple raised cutting surfaces (2021-07-13),
2. 10900290 - Fixed cutter completions bit (2021-01-26),
3. 10844667 - Drill bit having shaped impregnated shock studs and/or intermediate shaped cutter (2020-11-24),
4. 10753155 - Fixed cutter stabilizing drill bit (2020-08-25),
5. 10590525 - Modified surface properties of percussion tools used in downhole drilling (2020-03-17),
6. 10550644 - Drill bit having shaped leading cutter and impregnated backup cutter (2020-02-04),
7. 10538970 - Method for drilling out a plug using a hybrid rotary cone drill bit (2020-01-21),
8. 10508501 - Drill bit having shear cutters with reduced diameter substrate (2019-12-17),
9. 10494873 - Roller cone bit having gland for full seal capture (2019-12-03),
10. 10428584 - Bit for drilling with casing or liner string and manufacture thereof (2019-10-01),
11. 10364610 - Durable rock bit for blast hole drilling (2019-07-30),
12. 10337272 - Hybrid roller cone and junk mill bit (2019-07-02),
13. 10031056 - Thermomechanical testing of shear cutters (2018-07-24),
14. 9988854 - Roller cone drill bit with improved erosion resistance (2018-06-05),
15. 9951409 - Modified surface properties of percussion tools used in downhole drilling (2018-04-24),
Company Overview
Varel International Ind., L.P. is a leading provider of advanced drilling technology, headquartered in Carrollton, Texas. The company specializes in the development and manufacturing of high-performance drill bits, including PDC cutters and hybrid designs, tailored for various drilling applications. Varel's innovative solutions focus on enhancing erosion resistance, thermal stability, and effective sealing mechanisms, making them a key player in the drilling industry. Their commitment to research and development positions them at the forefront of drilling technology advancements.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

89 Patents

#4 in Carrollton, TX

#226 in Texas

#4,196 in US

#8,620 in the World

Carrollton, TX (US)
Carrollton, TX, United States of America

Varel International Ind., L.p.

Forward Citations = 291

55 inventors:

goldMedal William W King (13 out of 52 patents)

silverMedal Federico Bellin (11 out of 29 patents)

bronzeMedal Alfazazi Dourfaye (10 out of 21 patents)

4.  Thomas Gallifet (9 out of 9 patents)

5.  Michael R Reese (8 out of 50 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Varel International Ind., L.p.. Retrieved from https://idiyas.com/company/varel-international-ind

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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