Inventor
August Lehner
Inventor
Gronau, DE
Overview
48→
Patents
1977–2001
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 48 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer27%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests21%
Y10TTechnical subjects covered by former us classification19%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds17%
C08LCompositions of macromolecular compounds5%
C09DCoating compositions, e.g. paints, varnishes or lacquers3%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds2%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices2%
C08JWorking-up1%
C09JAdhesives1%
PatentTitleYear
6,231,963'Magnetic recording media'20016,025,456'Polyurethanes'20005,968,658'Magnetic recording media'19995,922,469'Materials suitable as crosslinkable binder components'19995,756,637'Polymeric materials suitable as dispersing resins'19985,556,918'Polymeric materials suitable as dispersing resins'19965,552,229'Magnetic recording medium containing magnetic material dispersed in a polyurethaneurea-polyurethane binder'19965,543,226'Magnetic recording media'19965,523,151'Magnetic recording media'19965,473,042'Materials suitable as crosslinkable binder components'19955,470,650'Magnetic recording media'19955,217,810'Magnetic recording medium having a magnetic layer containing chromium dioxide particles and linolenic acid'19935,169,721'Magnetic recording media comprising a polyurethane binder resin containing perfluoro groups'19925,130,202'Magnetic recording medium containing an isocyanate-free branched thermoplastic polyurethane binder resin with urea groups at the chain ends'19925,120,608'Magnetic recording media comprising a polyurethane binder resin containing perfluoro groups'19925,082,737'Magnetic recording media having a branched thermoplastic polyurethane binder containing a polysiloxane component in the main chain'19925,082,689'Production of magnetic recording media'19925,075,179'Magnetic recording media'19915,064,721'Magnetic recording media'19914,895,764'Magnetic recording media'19904,673,591'Production of layer-type magnetic recording media'19874,671,969'Production of layer-type magnetic recording media'19874,668,586'Magnetic recording media'19874,666,781'Magnetic recording media'19874,656,093'Magnetic recording media'19874,647,513'Magnetic recording media'19874,597,990'Preparation of magnetic recording media'19864,590,144'Photopolymerizable recording material and the production of relief plates using this recording material'19864,568,612'Magnetic recording media'19864,568,610'Magnetic recording media'19864,567,109'Magnetic recording media'19864,567,108'Magnetic recording media'19864,559,118'Magnetic recording media'19854,551,359'Production of magnetic recording media'19854,534,999'Production of magnetic recording media having a backing coating'19854,482,664'Dispersions of finely divided synthetic resins in plasticizers'19844,472,455'Production of magnetic recording media'19844,421,840'Photopolymerizable recording material containing a diisocyanate modified nylon binder'19834,400,497'Storage stable, heat curable mixtures of polyisocyanate and polyol and process for their manufacture and use'19834,357,221'Process for coating electrically conductive objects with polyurethane'19824,334,034'Process for the preparation of polymerizable polyurethane elastomers'19824,328,282'Magnetic recording media'19824,320,171'Magnetic recording media containing elastomeric polyurethane binders in the magnetic coating'19824,314,922'Process for the preparation of aqueous polyurethane dispersions'19824,310,565'Process of making a magnetic recording media'19824,058,646'Magnetic recording media containing elastomeric polyurethane binders in the magnetic coating'19774,058,506'Thermoplastic, elastic polyurethanes which are soluble in ethers and/or ketones'19774,011,084'Fluid photo-crosslinkable compositions for the manufacture of relief printing plates'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1993Patents assigned to BASF AG (36)· patent assignee history
1977–1996Based in Gronau, DE· patent location history
1983Based in Roedersheim, DE· patent location history
1984Patents assigned to BASF FARBEN & FASERN (1)· patent assignee history
1984–1995Based in Rodersheim, DE· patent location history
1995–1996Patents assigned to BASF MAGNETICS GMBH (5)· patent assignee history
1995Patents assigned to BASI MAGNETICS GMBH (1)· patent assignee history
1996–2001Based in Rodersheim-Gronau, DE· patent location history
1998–2001Patents assigned to EMTEC MAGNETICS GMBH (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 36 | 1977–1993 |
| BASF MAGNETICS GMBH | 5 | 1995–1996 |
| EMTEC MAGNETICS GMBH | 5 | 1998–2001 |
| BASF FARBEN & FASERN | 1 | 1984 |
| BASI MAGNETICS GMBH | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gronau, DE | 39 | 1977–1996 |
| Rodersheim-Gronau, DE | 6 | 1996–2001 |
| Rodersheim, DE | 2 | 1984–1995 |
| Roedersheim, DE | 1 | 1983 |