Michael D. Harfst — 18 Patents at Blount

Michael D. Harfst has been granted 18 US patents while listed as an inventor at Blount. The first was granted in 1989 and the most recent in July 2025. Michael D. Harfst ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Michael D. Harfst in Milwaukie, OR, US.

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12365109	Saw chain link with one or more oversized rivet holes	Christopher D. Seigneur	2025-07-22
11926070	Targeted oil delivery for chain saw bars	Eric M. Burmester, Sam Hutsell, Genesis McDermott, Patrick Sellars, James Matthew Cunnington +1 more	2024-03-12
11273573	Saw chain link with one or more oversized rivet holes	Christopher D. Seigneur	2022-03-15
11247363	Saw chain presets	Christopher D. Seigneur, Evan Pickett, James Matthew Cunnington	2022-02-15
11090741	High efficiency saw chain	Roberto de Jesus Torres Delgado, James Matthew Cunnington, Sam Hutsell	2021-08-17
10406715	Tie rivet for saw chain	Christopher D. Seigneur	2019-09-10
D843802	Bumper drive link	Roberto de Jesus Torres Delgado, James Matthew Cunnington, Sam Hutsell	2019-03-26
D842910	Cutter for saw chain	Sam Hutsell, James Matthew Cunnington, Roberto de Jesus Torres Delgado	2019-03-12
D839720	Tie strap	James Matthew Cunnington, Sam Hutsell, Roberto de Jesus Torres Delgado	2019-02-05
10195759	Tie strap with hardened integrated rivet for a saw chain	Christopher D. Seigneur	2019-02-05
9757808	Formed wire tie strap with integrated rivet for a saw chain	Christopher D. Seigneur	2017-09-12
9038519	Apparatus, method, and system for orienting a saw chain link on a sprocket	Mike Goettel, Christopher D. Seigneur	2015-05-26	$4,353,000
6748840	Saw chain having drive link with guard feature	—	2004-06-15	$3,920,000
6446534	Depth gauge for cutter	—	2002-09-10	$1,160,000
6058825	Depth gauge for cutter	—	2000-05-09	$5,308,000
5050303	Chain saw bar fluid passage system	James Sinclair, Paul W. Pink, Robin A. Plumbley	1991-09-24
4873903	Saw chain with wear link	—	1989-10-17
4813323	Chain link with folded over connecting portions	—	1989-03-21

Michael D. Harfst — 18 Patents

Issued Patents All Time

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