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For the Inventor, By the Inventor

St. Albert, Canada

Lewal Drilling Ltd.


USPTO Granted Patents = 3


Forward Citations = 19

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1 inventor (with patents filed for the assignee):

goldMedal Bruno H Walter (3 out of 8 patents)


3 patents:

1. 8322463 - Down hole multiple piston tools operated by pulse generation tools and methods for drilling (2012-12-04),
2. 7059426 - Acoustic flow pulsing apparatus and method for drill string (2006-06-13),
3. 6910542 - Acoustic flow pulsing apparatus and method for drill string (2005-06-28),
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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#2 in St. Albert

#4,243 in Canada

...
St. Albert, Canada

Lewal Drilling Ltd.

Forward Citations = 19

1 inventor:

goldMedal Bruno H Walter (3 out of 8 patents)

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