Inventor
Herbert Groothues
Inventor
Weiterstadt, DE
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus29%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them24%
C08LCompositions of macromolecular compounds12%
B29CShaping or joining of plastics6%
B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts6%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form6%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients6%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%
Y10TTechnical subjects covered by former us classification6%
PatentTitleYear
10,466,406Light guide plate and method for the production thereof20198,092,731'Method for producing a thermoplastic plastic film, film and use thereof'20127,629,041'Diffuser disk for LCD applications, method for the production and use thereof'20097,602,550'Stable rear projection screen and method for the production thereof'20097,339,732'Scratch-resistant rear projection screen and method for producing the same'20087,064,894'Rear projection screen and method for the production thereof'20067,046,903'Light-guide body and process for its production'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006–2012Patents assigned to ROEHM GMBH (5)· patent assignee history
2006–2012Based in Weiterstadt, DE· patent location history
2009–2019Patents assigned to EVONIK ROEHM GMBH (2)· patent assignee history
2012–2019Patents assigned to GROOTHUES HERBERT (2)· patent assignee history
2012–2019Patents assigned to HAERING HELMUT (2)· patent assignee history
2012Patents assigned to BIRTH DETLEF (1)· patent assignee history
2019Based in Frankfurt am Main, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ROEHM GMBH | 5 | 2006–2012 |
| EVONIK ROEHM GMBH | 2 | 2009–2019 |
| GROOTHUES HERBERTself | 2 | 2012–2019 |
| HAERING HELMUT | 2 | 2012–2019 |
| BIRTH DETLEF | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Weiterstadt, DE | 6 | 2006–2012 |
| Frankfurt am Main, DE | 1 | 2019 |