Enter assignee name

Trademarks = 7

Forward Citations = 62

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2 inventors (with patents filed for the assignee):

Douglas A Jahnke (9 out of 23 patents)

Lap Tan Tran (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 11686173 - Rotary control device with self-contained hydraulic reservoir (2023-06-27),

2. 11614175 - Self-contained hydraulically controlled relief valve (2023-03-28),

3. 10895337 - Pipe union assembly (2021-01-19),

4. 10830233 - Reduced torque lock assembly (2020-11-10),

5. 10436193 - Cylinder liner retainer system with torque multiplier and method (2019-10-08),

6. 10408328 - Epicyclic washpipe swivel cartridge and method (2019-09-10),

7. 10041490 - Quick change cylindrical liner retainer assembly (2018-08-07),

8. 10036384 - Quick release piston rod assembly (2018-07-31),

9. 9909580 - Reduced torque valve cover lock assembly (2018-03-06),

Premium Oilfield Technologies, LLC is a leading provider of premium oilfield equipment and services. With a strong focus on quality, reliability, and efficiency, we offer a wide range of products and solutions for the oil and gas industry. Our team of experts is dedicated to delivering superior performance and value to our clients worldwide.

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Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

9 Patents

#505 in Houston, TX

#2,012 in Texas

#31,662 in US

Houston, TX, United States of America

Premium Oilfield Technologies, LLC

Forward Citations = 62

2 inventors:

Douglas A Jahnke (9 out of 23 patents)

Lap Tan Tran (1 out of 1 patent)

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