Inventor
Michael Bierdel
Inventor
Leverkusen, DE
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B29Cprimary
B29CShaping or joining of plastics28%
B29BPreparation or pretreatment of the material to be shaped25%
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. inserts13%
Y10TTechnical subjects covered by former us classification7%
B01FMixing, e.g. dissolving, emulsifying or dispersing4%
C08JWorking-up4%
Y02PClimate change mitigation technologies in the production or processing of goods4%
B01DSeparation3%
B82YSpecific uses or applications of nanostructures3%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%
PatentTitleYear
11,045,977Device and method for dispersing solids, liquids and gases in an extruder202110,836,076Process for extruding plastic compositions202010,435,507Ultra-high purity polycarbonates having good inherent color and thermal resistance and a device and a method for producing the same201910,207,424Mixing elements having an improved dispersing effect201910,029,393Screw elements with improved dispersing action and low energy input20189,944,008Method for extruding plastic materials20189,868,245'Screw elements for extruding plastic compositions'20189,828,464Ultra-high purity polycarbonates having good inherent color and thermal resistance and a device and a method for producing the same20179,808,978'Screw elements with reduced energy input during the build-up of pressure'20179,738,025'Method for extruding plastic masses'20179,738,770'Degassing method, degassing device and use of screw elements'20179,688,002'Screw elements with improved dispersing action and low energy input'20179,561,613'Apparatus and process for producing products from pigment-containing polymer mixtures'20179,487,635'Degassing method, degassing device and use of screw elements'20169,314,954'Method for constructing bodies that rotate in the same direction and are in contact with one another and computer system for carrying out said method'20168,979,355'Screw elements with reduced sweep angle'20158,915,642'Method for constructing co-rotating contiguous bodies and computer program product for carrying out said method and screw elements produced accordingly'20148,876,360'Method for constructing co-rotating, contiguous bodies and computer program product for carrying out said method'20148,753,003'Screw feed elements for extrusion of viscoelastic masses'20148,288,456'Process for the production of impact-modified filled polycarbonate compositions'20127,144,981'Process for separating volatile components from polymers'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006Based in Köln, DE· patent location history
2012–2018Patents assigned to BIERDEL MICHAEL (13)· patent assignee history
2012–2021Based in Leverkusen, DE· patent location history
2014–2018Patents assigned to König Thomas (10)· patent assignee history
2014–2018Patents assigned to LIESENFELDER ULRICH (9)· patent assignee history
2014–2016Patents assigned to BAYER IP GMBH (5)· patent assignee history
2016–2017Based in Cologne, DE· patent location history
2017–2021Patents assigned to COVESTRO DEUTSCHLAND AG (12)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BIERDEL MICHAELself | 13 | 2012–2018 |
| COVESTRO DEUTSCHLAND AG | 12 | 2017–2021 |
| König Thomas | 10 | 2014–2018 |
| LIESENFELDER ULRICH | 9 | 2014–2018 |
| BAYER IP GMBH | 5 | 2014–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Leverkusen, DE | 18 | 2012–2021 |
| Cologne, DE | 2 | 2016–2017 |
| Köln, DE | 1 | 2006 |