Inventor

Heinrich Leufen

Inventor

Schwaikheim, DE

Overview

2001–2018

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 17 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F02Dprimary

F02DControlling combustion engines17%

F02PIgnition, other than compression ignition, for internal-combustion engines17%

F02BInternal-combustion piston engines13%

B25FCombination or multi-purpose tools not otherwise provided for8%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof6%

H02KDynamo-electric machines6%

Y02TClimate change mitigation technologies related to transportation6%

B27BSaws for wood or similar material4%

F02NStarting of combustion engines4%

A01DHarvesting2%

PatentTitleYear

10,063,165Method and apparatus for the detection of the position of an operating switch for starting an electric motor2018 9,366,220'Method for operating an internal combustion engine of a hand-guided power tool'2016 9,140,204'Handheld work apparatus having an air-cooled combustion engine'2015 9,068,545'Method and device for providing electric energy for an engine control unit'2015 8,833,322'Handheld work apparatus having a control unit for an electric heating element'2014 8,667,955'Handheld work apparatus having a control unit for operating an electric load'2014 8,428,847'Ignition module having a bus line'2013 7,974,767'Method for detecting operating parameters of a power tool comprising an internal combustion engine'2011 7,894,974'Method for operating a two-stroke engine'2011 7,859,124'Internal combustion engine with alternator'2010 7,816,796'Hand-held power tool and method for operating a heating device of a hand-held power tool'2010 7,809,495'Portable hand-held power tool having a data connection for diagnostic purposes'2010 7,538,503'Hand-held power tool, in particular a trimmer or the like, having an electric drive motor'2009 7,363,910'Ignition circuit having a high-energy spark for an internal combustion engine'2008 7,325,528'Method of operating a single cylinder two-stroke engine'2008 7,281,501'Magnet wheel of an internal combustion engine'2007 6,232,672'Hand-held work tool with a generator'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001Based in Winnenden, DE· patent location history

2007–2018Patents assigned to STIHL AG & CO KG ANDREAS (16)· patent assignee history

2007–2018Based in Schwaikheim, DE· patent location history

2010–2015Based in Schaikheim, DE· patent location history

2013–2015Patents assigned to LEUFEN HEINRICH (5)· patent assignee history

2013–2015Patents assigned to SCHIEBER EBERHARD (3)· patent assignee history

2014Patents assigned to FALLSCHEER DAVID (2)· patent assignee history

2015Patents assigned to GORENFLO ERNST (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
STIHL AG & CO KG ANDREAS	16	2007–2018
LEUFEN HEINRICHself	5	2013–2015
SCHIEBER EBERHARD	3	2013–2015
FALLSCHEER DAVID	2	2014
GORENFLO ERNST	2	2015

Locations

Location	Patents	Span
Schwaikheim, DE	14	2007–2018
Schaikheim, DE	2	2010–2015
Winnenden, DE	1	2001