Peter Dufresne — 6 Patents at Unknown

Peter Dufresne has been granted 6 US patents while listed as an inventor at Unknown. The first was granted in 1997 and the most recent in February 2021. Peter Dufresne ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Peter Dufresne in Calgary, AB, CA.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #	Title	Co-Inventors	Date
10926243	Highly porous lubricant conditioning and remediation media	Matthew Hobbs	2021-02-23
8468749	Gate entry system	—	2013-06-25
6287047	Roadway water ramp apparatus	—	2001-09-11
5785861	Regeneration of perchloroethylene	—	1998-07-28
5755527	Roadway water ramp apparatus	—	1998-05-26
5661117	Regeneration of phosphate ester lubricating fluids	—	1997-08-26

Peter Dufresne — 6 Patents

Issued Patents All Time

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