Inventor
Gerhard Doll
Inventor
Ulm, DE
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps26%
F01LCyclically operating valves for machines or engines24%
F02FCylinders, pistons or casings, for combustion engines9%
F02BInternal-combustion piston engines6%
H01FMagnets6%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling3%
F16DCouplings for transmitting rotation3%
F16LPipes3%
F21VFunctional features or details of lighting devices or systems thereof3%
H01RElectrically-conductive connections3%
PatentTitleYear
7,446,463'Solder-free contact-making of dielectrically impeded discharge lamps'20087,334,916'Illumination device'20087,291,979'Dielectric barrier discharge lamp having divided electrodes'20077,025,472'Coupling element for elongate lamps and illumination system having this coupling element'20066,984,930'Discharge lamp with ignition aid of a UV/VIS material having high secondary electron emission coefficient'20066,960,874'Tubular discharge lamp with ignition aid'20056,924,599'Dielectric barrier discharge lamp with starting aid'20056,777,878'Dielectric barrier discharge lamp having an ignition means'20046,605,899'Dielectric barrier discharge lamp'20036,271,743'Winding arrangement of a coil'20016,046,520'Liquid cooled generator'20005,764,122'Winding arrangement of a coil'19985,601,057'Valve actuating system for a multicylinder internal combustion engine'19975,476,075'Hollow rocker-arm shaft for internal combustion engines'19955,456,226'Method of minimizing play in a valve operating mechanism'19955,351,661'Multi-cylinder internal combustion engine valve actuator'19945,339,778'Cylinder-head-mounted camshaft bearing for an internal combustion engine'19945,297,506'Valve operating system for an internal combustion engine'19945,297,505'Internal combustion engine valve actuator'19944,903,650'Apparatus for relative angular adjustment between two shafts in drive connection'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1997Patents assigned to DAIMLER BENZ AG (8)· patent assignee history
1994Based in Stuttgart, DE· patent location history
1995–2000Based in Esslingen, DE· patent location history
1998–2001Patents assigned to SIEMENS AG (2)· patent assignee history
2000Patents assigned to DAIMLER CHRYSLER AG (1)· patent assignee history
2001Based in Nurnberg, DE· patent location history
2003–2008Patents assigned to PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH (8)· patent assignee history
2003–2006Based in Ulm, DE· patent location history
2005Patents assigned to PATENT TREUHAUD GES FUER ELEK (1)· patent assignee history
2007–2008Based in Guangzhou, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DAIMLER BENZ AG | 8 | 1990–1997 |
| PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH | 8 | 2003–2008 |
| SIEMENS AG | 2 | 1998–2001 |
| DAIMLER CHRYSLER AG | 1 | 2000 |
| PATENT TREUHAUD GES FUER ELEK | 1 | 2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ulm, DE | 6 | 2003–2006 |
| Esslingen, DE | 4 | 1995–2000 |
| Stuttgart, DE | 4 | 1994 |
| Guangzhou, CN | 3 | 2007–2008 |
| Nurnberg, DE | 1 | 2001 |