Inventor
Franz Knopf
Inventor
Buhl, DE
Overview
Patents· 22 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Fprimary
B41FPrinting machines or presses14%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables10%
H01TSpark gaps10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for7%
F01PCooling of machines or engines in general7%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles5%
F02BInternal-combustion piston engines5%
G01NInvestigating or analysing materials by determining their chemical or physical properties5%
H05FStatic electricity5%
PatentTitleYear
10,727,651Emission tip assembly and method for operating same20208,474,304'Device for the determination of the concentration of solid particles'20138,444,538'Impression roller and use of the same'20138,308,846'Method and device for precipitating impurities from a stream of gas'20127,431,897'Apparatus replacing atmospheric oxygen with an inert gas from a laminar air boundary layer and application of said apparatus'20087,345,766'Measuring chamber for photo-acoustical sensors'20086,827,781'Device for humidifying a material web'20046,748,855'Device and method for blocking a stack of stacked objects'20046,508,174'Electrostatic printing aid'20036,504,700'Active discharge collector for minimizing positive and/or negative charges on moving material webs'20036,445,562'Method and device for electrostatic charging'20026,308,574'Measuring device to measure the pressure of an atmosphere'20016,285,032'Device for removing the gaseous laminar boundary layer of a web'20016,159,555'Method and device for electrostatic charging'20005,517,384'Compound surface-charging electrode'19965,322,011'Pressure cylinder with electrostatically assisted ink transfer'19945,044,275'Electrostatic printing assist system'19914,610,326'Air cooling arrangement for encapsulated vehicle engine'19864,514,140'Axial fan'19854,459,944'Water-cooled internal combustion engine with a sound-absorbing cover'19844,455,971'Water-cooled internal combustion engine with a sound absorbing cover'19844,208,965'Method for electrostatic assistance in printing processes, and printing machines having electrostatic substrate contact pressure'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–2020Patents assigned to KNOPF FRANZ (5)· patent assignee history
1980–2020Based in Buhl, DE· patent location history
1984–1985Patents assigned to LIST HANS (3)· patent assignee history
1984–2013Based in Graz, AT· patent location history
1986Patents assigned to AVL VERBRENNUNGSKRAFT MESSTECH (1)· patent assignee history
1991–2008Patents assigned to ELTEX ELEKTROSTATIK GMBH (9)· patent assignee history
1991–2008Based in Weil der Stadt, DE· patent location history
2002Based in Bhl, DE· patent location history
2008–2013Patents assigned to AVL LIST GMBH (2)· patent assignee history
2012Based in Buehl, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ELTEX ELEKTROSTATIK GMBH | 9 | 1991–2008 |
| KNOPF FRANZself | 5 | 1980–2020 |
| LIST HANS | 3 | 1984–1985 |
| AVL LIST GMBH | 2 | 2008–2013 |
| AVL VERBRENNUNGSKRAFT MESSTECH | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Buhl, DE | 8 | 1980–2020 |
| Graz, AT | 6 | 1984–2013 |
| Weil der Stadt, DE | 4 | 1991–2008 |
| Buehl, DE | 1 | 2012 |
| Bhl, DE | 1 | 2002 |