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Inventor

Ralph Liersch

Inventor
Metzingen, DE

Overview

4→
Patents
2004–2016
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B24Bprimary
B24BMachines, devices, or processes for grinding or polishing33%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy33%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution33%
PatentTitleYear
9,385,401'Rechargeable battery pack and electrical hand tool device'20168,663,834'Rechargeable battery pack and electrical hand tool device'20147,789,737'Rapid locking device'20106,808,347'Tensioning nut to secure a disk-shaped tool'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2016Patents assigned to METABOWERKE GMBH (4)· patent assignee history
2004–2016Based in Metzingen, DE· patent location history
2014–2016Patents assigned to GRAEBER JOCHEN (2)· patent assignee history
2014–2016Patents assigned to LIERSCH RALPH (2)· patent assignee history
2014–2016Patents assigned to STICKEL WOLFGANG (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
METABOWERKE GMBH42004–2016
GRAEBER JOCHEN22014–2016
LIERSCH RALPHself22014–2016
STICKEL WOLFGANG22014–2016
Locations
LocationPatentsSpan
Metzingen, DE42004–2016