Inventor
Hans-Herlof Hardtke
Inventor
Zeven, DE
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F16Lprimary
F16LPipes38%
Y10TTechnical subjects covered by former us classification15%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors6%
E21DShafts6%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges6%
F16CShafts6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding3%
B60BVehicle wheels3%
E01DConstruction of bridges, elevated roadways or viaducts3%
PatentTitleYear
8,251,338'Constant bearer'20128,152,126'Constant bearer'20127,971,846'Constant bearer'20117,320,448'Pipe clip'20087,021,855'Clamping device for clamping girders'20065,558,447'Roller bearing'19965,104,079'Supporting clamp for mounting constructional components, for example tubes or the like'19925,028,149'Roller bearing for supporting pipes, conduits and the like'19915,028,019'Pipe support'19915,018,700'Suspension device for conveying loads, particularly pipes'19915,018,607'Hydraulic dashpot for pipeline systems'19914,951,902'Support bracket for pipes'19904,930,732'Yoke pipe clip'19904,928,911'Supporting bracket for pipes'19904,613,119'Suspension device with a compensatory spring system'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986Patents assigned to LISEGA KRAFTWERKTECH GMBH (1)· patent assignee history
1986–2012Based in Zeven, DE· patent location history
1990–2006Patents assigned to LISEGA GMBH (10)· patent assignee history
2008–2012Patents assigned to LISEGA AG (4)· patent assignee history
2012Patents assigned to HARDTKE HANS-HERLOF (2)· patent assignee history
2012Patents assigned to LANGE HEINZ-WILHELM (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LISEGA GMBH | 10 | 1990–2006 |
| LISEGA AG | 4 | 2008–2012 |
| HARDTKE HANS-HERLOFself | 2 | 2012 |
| LANGE HEINZ-WILHELM | 1 | 2012 |
| LISEGA KRAFTWERKTECH GMBH | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Zeven, DE | 15 | 1986–2012 |