Inventor
Gerhard Pfaff
Inventor
Munster, DE
Overview
Patents· 57 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Cprimary
C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties17%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds16%
C09DCoating compositions, e.g. paints, varnishes or lacquers14%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients9%
Y10TTechnical subjects covered by former us classification9%
A61KPreparations for medical, dental or toiletry purposes7%
A61QSpecific use of cosmetics or similar toiletry preparations7%
C03CChemical composition of glasses, glazes or vitreous enamels3%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments3%
H01BCables2%
PatentTitleYear
10,647,861a-alumina flakes202010,457,812a-alumina flakes201910,280,308Effect pigments20198,906,504'Pigments'20148,337,611'Effect pigments'20127,708,823'Semi-transparent interference pigments containing tin'20107,691,196'Effect pigments'20107,611,574'Interference pigment with a high covering power'20097,416,688'Transparent conductive pigments'20087,255,736'Effect pigments based on thin SiO2 flakes'20077,202,288'Laser-markable pigments containing an absorber coated with a marker'20077,169,223'Effect pigments having a strong color flop'20077,156,913'Intensely colored red effect pigments'20077,060,126'Multilayered luster pigments'20066,997,982'Pigment with a metallic luster'20066,929,690'Pigment with a metallic luster'20056,767,633'Transparent medium having angle-selective transmission or reflection properties and/or absorption properties'20046,727,308'Laser-markable plastics'20046,656,259'Multilayered interference pigments'20036,648,957'Multilayer nacreous pigment'20036,602,340'Transparent medium with angular-selective transmitting or reflecting properties'20036,596,070'Interference pigments'20036,552,102'Pigment flakes'20036,517,628'Pigment mixture'20036,500,251'Multi-coated interference pigments'20026,456,897'Control method and numerical control for motion control of industrial machine tools'20026,419,736'Sulfide and oxysulphide pigments'20026,376,577'Laser-markable plastics'20026,372,036'Pigment preparation and its use especially in printing inks'20026,348,259'Modified electrode material and its use'20026,337,160'Manganese dioxide electrodes, process for producing the same and their use'20026,334,893'Pigment mixture'20026,294,010'Pigment mixture'20016,291,065'Pigment flakes'20016,291,551'Laser-markable plastics'20016,284,032'Multilayer interference pigments'20016,280,520'Multilayer pearl luster pigment based on an opaque substrate'20016,267,810'Pigment mixture'20016,238,472'Metal oxide coated titanium dioxide lamellas'20016,156,115'Multilayer interference pigment with transparent central layer'20006,132,504'Multilayer interference pigment with absorbent central layer'20005,985,020'Plate-like titanium dioxide reduction pigment'19995,972,098'Titanate-containing pearlescent pigments'19995,945,035'Conductive pigments'19995,858,078'Platelet-shaped titanium dioxide pigment'19995,827,361'Carbon-containing figments'19985,753,024'Grey pigments containing tin'19985,702,518'Gold pigments'19975,611,852'Stabilized conductive pigment'19975,536,447'Substrate-free conductive pigments'19965,350,448'Electrically conductive pigments'19945,320,781'Conductive pigment'19945,286,291'Pigments containing carbon black'19944,984,977'Screw-type extruder having a starting valve and throttle'19914,754,539'Method and extractor device for separating worm elements of an extruder from a worm shaft'19884,488,215'Method and apparatus for controlling the load current of a pulsed frequency converter'19844,480,301'Method and apparatus for controlling a pulsed frequency converter'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–2002Patents assigned to SIEMENS AG (3)· patent assignee history
1984–2002Based in Erlangen, DE· patent location history
1988–1991Patents assigned to WERNER & PFLEIDERER (2)· patent assignee history
1994–2020Patents assigned to MERCK PATENT GMBH (50)· patent assignee history
1994–2006Based in Munster, DE· patent location history
2002–2003Based in Mnster, DE· patent location history
2004–2020Based in Muenster, DE· patent location history
2005–2014Based in Münster, DE· patent location history
2012–2014Patents assigned to PFAFF GERHARD (2)· patent assignee history
2012Patents assigned to DIETZ JOHANN (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MERCK PATENT GMBH | 50 | 1994–2020 |
| SIEMENS AG | 3 | 1984–2002 |
| PFAFF GERHARDself | 2 | 2012–2014 |
| WERNER & PFLEIDERER | 2 | 1988–1991 |
| DIETZ JOHANN | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Munster, DE | 24 | 1994–2006 |
| Muenster, DE | 12 | 2004–2020 |
| Mnster, DE | 10 | 2002–2003 |
| Münster, DE | 4 | 2005–2014 |
| Erlangen, DE | 3 | 1984–2002 |