Inventor
Christian Keller
Inventor
Baltimore, MD, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Fprimary
G01FMeasuring volume, volume flow, mass flow or liquid level19%
A61MDevices for introducing media into, or onto, the body13%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors6%
B66BElevators6%
F04BPositive-displacement machines for liquids6%
G05DSystems for controlling or regulating non-electric variables6%
G06FElectric digital data processing6%
G11CStatic stores6%
H01HElectric switches6%
H03FAmplifiers6%
PatentTitleYear
D0917560Mobile phone with graphical user interface202110,653,852Medicament delivery device20208,583,059'Method and circuit for operating a power semiconductor component'20138,310,347'Incrementing counter with extended write endurance'20127,650,886'Esophageal airway management device guides'20106,209,711'Conveying device for open-cast mines'20016,149,400'Method and apparatus for a suction valve of the plate-type construction'20004,959,808'Method and apparatus for the distance control of a positioning drive'19904,544,840'Fiber optic fluid impurity detector'19854,443,699'Fluid level measuring device with linear, high resolution output'19844,319,484'Linear response capacitance wave height measuring system'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1985Patents assigned to UNIV JOHNS HOPKINS (3)· patent assignee history
1982–1985Based in Baltimore, MD, US· patent location history
1990–2021Patents assigned to SIEMENS AG (3)· patent assignee history
2010–2013Patents assigned to KELLER CHRISTIAN (3)· patent assignee history
2010Patents assigned to BRIMACOMBE JOSEPH R (1)· patent assignee history
2012Based in Moosinning, DE· patent location history
2013Patents assigned to GE ENERGY POWER CONVERSION TECHNOLOGY LTD (1)· patent assignee history
2013Based in Berlin, DE· patent location history
2020Based in Taipei, TW· patent location history
2021Based in Hochberg, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KELLER CHRISTIANself | 3 | 2010–2013 |
| SIEMENS AG | 3 | 1990–2021 |
| UNIV JOHNS HOPKINS | 3 | 1982–1985 |
| BRIMACOMBE JOSEPH R | 1 | 2010 |
| GE ENERGY POWER CONVERSION TECHNOLOGY LTD | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Baltimore, Maryland, US | 3 | 1982–1985 |
| Hochberg, DE | 1 | 2021 |
| Taipei, TW | 1 | 2020 |
| Berlin, DE | 1 | 2013 |
| Moosinning, DE | 1 | 2012 |