Inventor
Detlef Hahn
Inventor
Hannover, DE
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling26%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors14%
G01VGeophysics14%
E21CMining or quarrying12%
E21DShafts12%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels7%
H04LTransmission of digital information, e.g. telegraphic communication5%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges2%
G01CMeasuring distances, levels or bearings2%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure2%
PatentTitleYear
9,809,389'Force measuring unit and system for measuring chain forces'20179,156,621'Face conveyor for extraction plants and trough element for said face conveyor'20159,109,445'Shield canopy for a shield-type support'20158,998,343'Method for determining the position or location of plant components in mining extracting plants and extracting plant'20158,215,876'Shield cap for a shield-type mining support'20128,174,404'Downlink pulser for mud pulse telemetry'20128,011,450'Active bottomhole pressure control with liner drilling and completion systems'20117,808,859'Oscillating shear valve for mud pulse telemetry'20107,779,984'Arrangement for extracting extraction products in underground extraction operations in caving'20107,417,920'Reciprocating pulser for mud pulse telemetry'20087,350,874'Method and device for extracting extraction products in underground mining'20087,280,432'Oscillating shear valve for mud pulse telemetry'20077,250,873'Downlink pulser for mud pulse telemetry'20076,975,244'Oscillating shear valve for mud pulse telemetry and associated methods of use'20056,898,150'Hydraulically balanced reciprocating pulser valve for mud pulse telemetry'20056,872,025'Toggle retainer for toggle connections'20056,626,253'Oscillating shear valve for mud pulse telemetry'20036,419,033'Apparatus and method for simultaneous drilling and casing wellbores'20026,196,336'Method and apparatus for drilling boreholes in earth formations (drilling liner systems)'20016,186,597'Pick system for mining ploughs, in particular coal ploughs'20015,287,955'Connections for inter-connecting the pans of scraper-chain conveyors'19945,224,582'Channel sections for scraper-chain conveyors'19935,156,258'Scraper-chain conveyors for use in mineral mining'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2017Based in Lunen, DE· patent location history
2001–2012Patents assigned to BAKER HUGHES INC (11)· patent assignee history
2001–2008Patents assigned to DBT GMBH (3)· patent assignee history
2001–2012Based in Hannover, DE· patent location history
2008–2015Based in Lünen, DE· patent location history
2012–2015Patents assigned to HAHN DETLEF (5)· patent assignee history
2012–2015Patents assigned to CATERPILLAR GLOBAL MINING EUR (4)· patent assignee history
2012–2015Patents assigned to HENGSTLER STEFAN (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAKER HUGHES INC | 11 | 2001–2012 |
| HAHN DETLEFself | 5 | 2012–2015 |
| CATERPILLAR GLOBAL MINING EUR | 4 | 2012–2015 |
| DBT GMBH | 3 | 2001–2008 |
| HENGSTLER STEFAN | 3 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hannover, DE | 11 | 2001–2012 |
| Lunen, DE | 10 | 1992–2017 |
| Lünen, DE | 2 | 2008–2015 |