For the Inventor, By the Inventor

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Edmonton, Canada

Master Flo Valve Inc.

USPTO Granted Patents = 15

CIPO Patents = 8

EPO Patents = 1

Trademarks = 6

Forward Citations = 206

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13 inventors (with patents filed for the assignee):

Larry J Bohaychuk (11 out of 11 patents)

Harry Richard Cove (4 out of 6 patents)

Anwar Abdul Sleiman (2 out of 2 patents)

4. Loren Kowalchuk (2 out of 2 patents)

5. Chad M Dannish (1 out of 2 patents)

6. Yan Gregory Klyashitsky (1 out of 1 patent)

7. Graham Ivan Kawulka (1 out of 2 patents)

8. Patrick Rabby (1 out of 3 patents)

9. Daniel Harlen Williams (1 out of 1 patent)

10. Cody Ryan Reynolds (1 out of 1 patent)

11. Douglas A Finlayson (1 out of 1 patent)

12. Mark K McNeill (1 out of 1 patent)

13. Richard Cove (1 out of 1 patent)

14. Loren G Kowalchuk (0 patent)

15. Chad Dannish (0 patent)

15 patents: Sort by Forward Citations

1. 11073225 - Rotary stepping actuator for valve (2021-07-27),

2. 10012327 - Cage valve with instrumentation (2018-07-03),

3. 10012325 - Cage valve with flow trim for reduced port erosion (2018-07-03),

4. 9458941 - Rotary stepping actuator for valve (2016-10-04),

5. 8490652 - Cage valve with flow trim for reduced fracturing (2013-07-23),

6. 8371333 - Cage valve with erosion control (2013-02-12),

7. 7699075 - Reverse flow flow trim for choke valve (2010-04-20),

8. 7426938 - Choke valve flow trim for fracture prevention (2008-09-23),

9. 7237472 - Linear hydraulic stepping actuator with fast close capabilities (2007-07-03),

10. 6997212 - Choke valve with temperature transmitter (2006-02-14),

11. 6782949 - Choke valve with pressure transmitters (2004-08-31),

12. 6648070 - Insert assembly for a wellhead choke valve (2003-11-18),

13. 6536473 - Choke valve (2003-03-25),

14. 6105614 - Choke valve for throttling fluid flow (2000-08-22),

15. 5431188 - Flow trim for choke (1995-07-11),

Master Flo Valve Inc. is a leading manufacturer of choke valves, control valves, and other flow management solutions for the oil and gas industry. With over 35 years of experience, Master Flo has a proven track record of delivering reliable and innovative products. They are dedicated to providing superior customer service and are committed to safety, quality, and continuous improvement. Visit their website for more information.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 16 2025

15 Patents

#16 in Edmonton

#943 in Canada

#38,696 in the World

Edmonton, Canada

Master Flo Valve Inc.

Forward Citations = 206

13 inventors:

Larry J Bohaychuk (11 out of 11 patents)

Harry Richard Cove (4 out of 6 patents)

Anwar Abdul Sleiman (2 out of 2 patents)

4. Loren Kowalchuk (2 out of 2 patents)

5. Chad M Dannish (1 out of 2 patents)

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