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For the Inventor, By the Inventor

Calgary, Canada

Drill Systems International Ltd.


USPTO Granted Patents = 2

Forward Citations = 27

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2 inventors (with patents filed for the assignee):

goldMedal Floyd W Becker (1 out of 10 patents)

silverMedal Kare Asak (1 out of 3 patents)


2 patents:

1. 4913466 - Inner pipe member for dual-wall drill pipe assembly (1990-04-03),
2. 4860838 - Latching bit sub (1989-08-29),
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USPTO Data Jan 1 1976 - Oct 6 2026

2 Patents

#405 in Calgary

#6,012 in Canada

Calgary, CA
Calgary, Canada

Drill Systems International Ltd.

Forward Citations = 27

2 inventors:

goldMedal Floyd W Becker (1 out of 10 patents)

silverMedal Kare Asak (1 out of 3 patents)

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