Inventor

Volker Keller

Inventor

Frechen, DE

Overview

4→

Patents

2002–2017

Patent span

Chemistry

Primary field (CPC C)

Patents· 4 as inventor

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

C01Fprimary

C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals13%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds13%

Y10TTechnical subjects covered by former us classification13%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients6%

C08LCompositions of macromolecular compounds6%

C09KMaterials for miscellaneous applications, not provided for elsewhere6%

C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms6%

F03BMachines or engines for liquids6%

F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g6%

G01FMeasuring volume, volume flow, mass flow or liquid level6%

PatentTitleYear

9,748,818'Method and device for supplying a measurement electronics system with electrical energy'2017 8,642,001'Aluminum hydroxide'2014 7,959,895'Process for the production of aluminum hydroxide'2011 6,485,915'Analytical element for species-specific detection of nucleic acids'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002Based in Bergisch Gladbach, DE· patent location history

2011Patents assigned to MARTINSWERK GMBH (1)· patent assignee history

2011–2014Based in Frechen, DE· patent location history

2014Patents assigned to ALBEMARLE CORP (1)· patent assignee history

2014Patents assigned to HERBIET RENE GABRIEL ERICH (1)· patent assignee history

2014Patents assigned to KELLER VOLKER ERNST WILLI (1)· patent assignee history

2014Patents assigned to PUETZ NORBERT WILHELM (1)· patent assignee history

2017Based in Speyer, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ALBEMARLE CORP	1	2014
HERBIET RENE GABRIEL ERICH	1	2014
KELLER VOLKER ERNST WILLIself	1	2014
MARTINSWERK GMBH	1	2011
PUETZ NORBERT WILHELM	1	2014

Locations

Location	Patents	Span
Frechen, DE	2	2011–2014
Speyer, DE	1	2017
Bergisch Gladbach, DE	1	2002