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For the Inventor, By the Inventor

Cleveland, OH, United States of America

Petrokleen, Ltd.


USPTO Granted Patents = 2

Forward Citations = 2

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2 inventors (with patents filed for the assignee):

goldMedal William J Claffey (2 out of 7 patents)

silverMedal Donald E Koehler (2 out of 2 patents)


2 patents:

1. 5962738 - Polymeric-amine fuel and lubricant additive (1999-10-05),
2. 5559270 - Method of synthesizing pure additives and the improved compositions (1996-09-24),
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USPTO Data Jan 1 1976 - Dec 23 2025

2 Patents

#433 in Cleveland, OH

#3,551 in Ohio

#92,558 in US

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Cleveland, OH, United States of America

Petrokleen, Ltd.

Forward Citations = 2

2 inventors:

goldMedal William J Claffey (2 out of 7 patents)

silverMedal Donald E Koehler (2 out of 2 patents)

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