Inventor
Wolfgang Lehmann
Inventor
Leverkusen, DE
Overview
Patents· 29 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds18%
D21HPulp compositions18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
F16DCouplings for transmitting rotation8%
A47LDomestic washing or cleaning6%
B07BSeparating solids from solids by sieving, screening, sifting or by using gas currents6%
F16CShafts6%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids4%
Y10TTechnical subjects covered by former us classification4%
B01DSeparation2%
PatentTitleYear
6,808,050'Brake disk for a disk brake'20046,755,023'Method and device for evacuating a turbine condenser'20046,519,808'Squeegee mounting assembly for a floor scrubber'20036,442,789'Riding floor scrubber'20026,397,429'Riding floor scrubber'20025,632,492'Sealing configuration for a passage of a shaft through a casing and method of operating the sealing configuration'19975,577,836'Headlamp for vehicles'19965,465,195'Headlight for motor vehicles'19955,429,214'Ventilated brake disc with transverse recesses in radially extending ribs'19955,360,087'Assembled brake disc for a disc brake with partial lining'19945,220,800'NMR magnet system with superconducting coil in a helium bath'19935,014,368'Method for monitoring the discharge of liquids and apparatus therefor'19914,861,462'Method of forming sieve unit for screening machine'19894,825,981'Axially split brake disk'19894,670,136'Screen surfacing with exchangeable screen elements'19874,576,420'Linear bearing arrangement for guiding a carriage in a straight line along a guide rail'19864,552,416'Rearing arrangement for guiding a carriage in a straight line along a guide rail'19854,473,466'Flat sieve element'19844,384,110'Polyamines containing urea groups prepared from lactam or aminocarboxylic acid'19834,348,514'Polyamines containing urea groups'19824,319,019'Polyamines containing amide groups'19824,315,816'High intensity magnetic field drum separator'19824,272,365'Magnetic separator'19814,254,255'Aqueous reaction of polyamine with alkylene dihalide in presence of emulsifier'19814,250,112'Polyalkylenepolyamines containing quaternary dialkylammonium groups'19814,250,298'Polyamines containing amide groups'19814,250,299'Polyamines containing amide groups'19814,166,002'Polyamines containing acid groups that are useful in papermaking'19793,932,363'Polyamines containing acid groups'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1983Patents assigned to BAYER AG (9)· patent assignee history
1976–1983Based in Leverkusen, DE· patent location history
1981–1993Based in Eggenstein-Leopoldshafen, DE· patent location history
1984–1987Patents assigned to ISENMANN DRAHTERZEUGNISSE GMBH (2)· patent assignee history
1984–1989Based in Kuppenheim, DE· patent location history
1989–1995Patents assigned to BERGISCHE STAHLINDUSTRIE (3)· patent assignee history
1989–2004Based in Remscheid, DE· patent location history
1995–1996Patents assigned to BOSCH GMBH ROBERT (2)· patent assignee history
2002–2003Patents assigned to NILFISK ADVANCE INC (3)· patent assignee history
2002–2003Based in Maple Grove, MN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 9 | 1976–1983 |
| BERGISCHE STAHLINDUSTRIE | 3 | 1989–1995 |
| NILFISK ADVANCE INC | 3 | 2002–2003 |
| BOSCH GMBH ROBERT | 2 | 1995–1996 |
| ISENMANN DRAHTERZEUGNISSE GMBH | 2 | 1984–1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Leverkusen, DE | 9 | 1976–1983 |
| Remscheid, DE | 4 | 1989–2004 |
| Maple Grove, Minnesota, US | 3 | 2002–2003 |
| Eggenstein-Leopoldshafen, DE | 3 | 1981–1993 |
| Kuppenheim, DE | 3 | 1984–1989 |