Inventor

Wolfgang Ehrfeld

Inventor

Karlsruhe, DE

Overview

1976–2011

Patent span

Performing operations

Primary field (CPC B)

Patents· 47 as inventor

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

Y10Tprimary

Y10TTechnical subjects covered by former us classification12%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

B01DSeparation10%

B23PMetal-working not otherwise provided for8%

C25DProcesses for the electrolytic or electrophoretic production of coatings6%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices6%

B01FMixing, e.g. dissolving, emulsifying or dispersing4%

B29CShaping or joining of plastics4%

B81CProcesses or apparatus specially adapted for the manufacture or treatment of microstructural devices or systems3%

F16CShafts3%

PatentTitleYear

7,934,865'Micromixer'2011 7,909,502'Static lamination micro mixer'2011 7,827,871'Antifriction bearing provided with polymer electronics'2010 7,615,274'Storage magazine for microstructured molded parts and fabrication procedure'2009 7,396,684'Method for quantitatively and/or qualitatively detecting layer thicknesses, a microreaction vessel and titre plate'2008 7,201,863'Magazine for microstructured moulded parts and method for the production thereof'2007 7,086,145'Magazine, assembly device for microcomponents'2006 6,982,064'Micromixer'2006 6,944,941'Method for assembling cassette-loaded microcomponents'2005 6,906,607'Method for producing and magazining individual magnetic components and the assembly thereof for producing miniaturized magnetic systems and such magnetic systems'2005 6,851,174'Integrally cast magazine for microcomponents'2005 6,700,278'Disk motor with bearing prestressing feature'2004 6,531,080'Method for producing and magazining micro-components'2003 6,484,582'Rolling bearing with sensing unit which can be remotely interrogated'2002 6,256,429'Matrix switch'2001 6,230,408'Process for producing micro-heat exchangers'2001 5,698,485'Process for producing ceramic microstructures from polymeric precursors'1997 5,502,567'Micropolarimeter, microsensor system and method of characterizing thin films'1996 5,376,506'Method to produce nonlinear optical microcomponents'1994 5,376,507'Method to produce nonlinear optical microcomponents'1994 5,194,402'Method of producing microsensors with integrated signal processing'1993 5,126,035'Electrochemical measuring cell'1992 5,096,643'Method of manufacturing microvalves'1992 5,054,522'Microvalve'1991 4,990,827'Micro secondary electron multiplier'1991 4,872,888'Microporous membrane filter and method of producing same'1989 4,797,211'Cross flow microfilter'1989 4,784,935'Method of producing a passive optical device including at least one reflection grating'1988 4,738,010'Method of producing a sheet or plate-shaped structure as the bearing material for slide bearings'1988 4,705,605'Method for producing a spinning nozzle plate'1987 4,703,559'Method for producing connecting elements for electrically joining microelectronic components'1987 4,698,285'Method for producing deep-etch, X-ray lithography masks'1987 4,694,548'Method for producing a spinning nozzle plate'1987 4,693,791'Method for producing spinning nozzle plates'1987 4,661,212'Method for producing a plurality of plate shaped microstructured metal bodies'1987 4,563,251'Layered multichannel metal plates for image amplifiers'1986 4,563,250'Method for producing multichannel plates'1986 4,551,157'Method for separating light additive gas in separating nozzle cascades'1985 4,541,977'Method for producing separating nozzle elements'1985 4,514,095'Motionless mixer'1985 4,493,753'Method for producing separating nozzle elements for the separation of fluid mixtures'1985 4,422,905'Method for producing separating nozzle elements used for separating gaseous or vaporous mixtures'1983 4,351,653'Method for producing separating nozzle elements'1982 4,246,007'Separating gaseous or vaporous substances according to the separating nozzle principle'1981 4,235,606'Separation of gaseous or vaporous substances according to the separating nozzle principle'1980 4,205,913'Determination of the partial pressure and the concentration of a gas'1980 3,989,483'Method and device for separating gaseous or vaporous materials, especially isotopes, by means of separation nozzles'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1981Based in Ettlingen, DE· patent location history

1980–1993Patents assigned to KERNFORSCHUNGSZ KARLSRUHE (25)· patent assignee history

1982–1993Based in Karlsruhe, DE· patent location history

1991–1992Patents assigned to BURKERT GMBH WERK INGELFINGEN (2)· patent assignee history

1994Patents assigned to IMM INST FUR MIKROTECHNIK GMBH (2)· patent assignee history

1994–2011Based in Mainz, DE· patent location history

2001–2009Patents assigned to INST MIKROTECHNIK MAINZ GMBH (13)· patent assignee history

2010Based in Wendelsheim, DE· patent location history

2011Patents assigned to EHRFELD MIKROTECHNIK BTS GMBH (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KERNFORSCHUNGSZ KARLSRUHE	25	1980–1993
INST MIKROTECHNIK MAINZ GMBH	13	2001–2009
BURKERT GMBH WERK INGELFINGEN	2	1991–1992
EHRFELD MIKROTECHNIK BTS GMBH	2	2011
IMM INST FUR MIKROTECHNIK GMBH	2	1994

Locations

Location	Patents	Span
Karlsruhe, DE	23	1982–1993
Mainz, DE	19	1994–2011
Ettlingen, DE	4	1976–1981
Wendelsheim, DE	1	2010