Inventor
Franz Wittmann
Inventor
Isen, DE
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography41%
G01NInvestigating or analysing materials by determining their chemical or physical properties24%
A47CChairs12%
Y10TTechnical subjects covered by former us classification12%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms6%
G11CStatic stores6%
PatentTitleYear
7,629,175'Test element with a one layer reaction film'20097,479,253'Method of assembling a diagnostic test strip having a functional overlay'20097,454,162'Multifunction device for post-processing of a printing substrate web printed by an electrographic printing device'20087,421,242'Device for post-processing of a print substrate web printed by an electrographic printing or copying device'20087,376,383'Device for regulation of the sliding properties of a print substrate in an electrophotographic printer or copier'20087,248,828'Device for regulation of the sliding properties of a print substrate in an electrophotographic printer or copier'20076,613,570'Control liquid containing an adsorbent'20036,537,496'Functional overlay for flexible objects in particular for diagnostic test strips'20036,298,216'Image transfer device incorporating a fuser roller having a thick wearable silicone rubber surface'20016,072,978'Device for applying release agent to the surface of a fixing roller of an electrographic printer or copier'20006,067,247'SRAM memory cell'20004,711,564'Mechanism for the drive of actuation elements movable in sealed regions of non-mechanical printer or copier means'19874,573,226'Insert for a piece of lounging furniture'19864,226,470'Convertible couch or chair'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1986Based in Etsdorf, AT· patent location history
1987–2000Patents assigned to SIEMENS AG (2)· patent assignee history
1987–2008Based in Isen, DE· patent location history
2000–2008Patents assigned to OCE PRINTING SYSTEMS GMBH (6)· patent assignee history
2000Based in Munich, DE· patent location history
2003–2009Patents assigned to ROCHE DIAGNOSTICS GMBH (2)· patent assignee history
2003Patents assigned to ROCHE DIAGNOSTICS CORP (1)· patent assignee history
2003–2009Based in Hockenheim, DE· patent location history
2009Patents assigned to ROCHE DIAGNOSTICS OPERATIONS (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OCE PRINTING SYSTEMS GMBH | 6 | 2000–2008 |
| ROCHE DIAGNOSTICS GMBH | 2 | 2003–2009 |
| SIEMENS AG | 2 | 1987–2000 |
| ROCHE DIAGNOSTICS CORP | 1 | 2003 |
| ROCHE DIAGNOSTICS OPERATIONS | 1 | 2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Isen, DE | 7 | 1987–2008 |
| Hockenheim, DE | 4 | 2003–2009 |
| Etsdorf, AT | 2 | 1980–1986 |
| Munich, DE | 1 | 2000 |