Inventor · disambiguated record
Michael D. Harfst
Also filed as: HARFST MICHAEL D
18 granted patents·2 pending applications·196 citations·filing 1987–2022
94Inventor score
Top patents by PatentIndex Score
20 records- 0189US10406715B2Tie rivet for saw chainBLOUNT INC·Filed 2016·Granted Sep 10, 2019·5 cites·9 claims
- 0288US9757808B2Formed wire tie strap with integrated rivet for a saw chainBLOUNT INC·Filed 2013·Granted Sep 12, 2017·9 cites·9 claims
- 0385US9038519B2Apparatus, method, and system for orienting a saw chain link on a sprocketBLOUNT INC·Filed 2013·Granted May 26, 2015·8 cites·16 claims
- 0483US6748840B2Saw chain having drive link with guard featureBLOUNT INC·Filed 2002·Granted Jun 15, 2004·29 cites·3 claims
- 0580US5050303AChain saw bar fluid passage systemBLOUNT INC·Filed 1990·Granted Sep 24, 1991·52 cites·17 claims
- 0679US11090741B2High efficiency saw chainOREGON TOOL INC·Filed 2020·Granted Aug 17, 2021·1 cites·12 claims
- 0778US11247363B2Saw chain presetsOREGON TOOL INC·Filed 2019·Granted Feb 15, 2022·2 cites·19 claims
- 0872US12365109B2Saw chain link with one or more oversized rivet holesOREGON TOOL INC·Filed 2022·Granted Jul 22, 2025·0 cites·19 claims
- 0972US6446534B1Depth gauge for cutterBLOUNT INC·Filed 2000·Granted Sep 10, 2002·14 cites·18 claims
- 1070US11273573B2Saw chain link with one or more oversized rivet holesOREGON TOOL INC·Filed 2017·Granted Mar 15, 2022·1 cites·21 claims
- 1170US4813323AChain link with folded over connecting portionsBLOUNT INC·Filed 1987·Granted Mar 21, 1989·25 cites·3 claims
- 1269USD843802SBumper drive linkBLOUNT INC·Filed 2018·Granted Mar 26, 2019·12 cites·1 claims
- 1359USD842910SCutter for saw chainBLOUNT INC·Filed 2018·Granted Mar 12, 2019·8 cites·1 claims
- 1458US6058825ADepth gauge for cutterBLOUT INC·Filed 1997·Granted May 9, 2000·18 cites·24 claims
- 1550US11926070B2Targeted oil delivery for chain saw barsOREGON TOOL INC·Filed 2021·Granted Mar 12, 2024·0 cites·19 claims
- 1650US10195759B2Tie strap with hardened integrated rivet for a saw chainBLOUNT INC·Filed 2016·Granted Feb 5, 2019·0 cites·14 claims
- 1747US4873903ASaw chain with wear linkBLOUNT INC·Filed 1988·Granted Oct 17, 1989·10 cites·11 claims
- 1843US2018326610A1High efficiency saw chainBLOUNT INC·Filed 2018·Application pending·0 cites
- 1938USD839720STie strapBLOUNT INC·Filed 2018·Granted Feb 5, 2019·2 cites·1 claims
- 2038US2008011144A1Saw chain having multiple drive link configurationsBLOUNT INC A LTD LIABILITY COM·Filed 2007·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →