Inventor
Hermann Roller
Inventor
Ludwigshafen, DE
Overview
24→
Patents
1976–1996
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 24 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 transducer31%
Y10TTechnical subjects covered by former us classification25%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests24%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%
C08LCompositions of macromolecular compounds4%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients3%
B22FWorking metallic powder1%
C09DCoating compositions, e.g. paints, varnishes or lacquers1%
H01FMagnets1%
PatentTitleYear
5,543,226'Magnetic recording media'19965,470,650'Magnetic recording media'19955,419,959'Magnetic recording medium having an infra-red light transparent balkcoat layer'19955,346,761'Flexible magnetic recording media having a backing coating containing a polyurethane resin having a phosphate group and precipated silica'19945,330,784'Process of producing a flexible magnetic recording media having a backing coating'19945,217,810'Magnetic recording medium having a magnetic layer containing chromium dioxide particles and linolenic acid'19935,130,202'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'19925,085,889'Process for the preparation of magnetic particle dispersions using ball mills and grinding media'19925,082,737'Magnetic recording media having a branched thermoplastic polyurethane binder containing a polysiloxane component in the main chain'19925,075,179'Magnetic recording media'19915,064,721'Magnetic recording media'19914,895,764'Magnetic recording media'19904,775,553'Production of magnetic recording media'19884,656,093'Magnetic recording media'19874,645,723'Production of magnetic recording media possessing a backing coating, and magnetic recording media thus produced'19874,597,990'Preparation of magnetic recording media'19864,581,296'Magnetic recording media'19864,567,108'Magnetic recording media'19864,534,999'Production of magnetic recording media having a backing coating'19854,360,377'Ferromagnetic metal particles, consisting essentially of iron and carrying a surface coating, and their production'19824,018,967'Magnetic recording tape'19774,018,968'Coated magnetic recording media'19774,000,336'Production of magnetic recording media'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1993Patents assigned to BASF AG (19)· patent assignee history
1976–1996Based in Ludwigshafen, DE· patent location history
1994–1996Patents assigned to BASF MAGNETICS GMBH (4)· patent assignee history
1995Patents assigned to BASI MAGNETICS GMBH (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 19 | 1976–1993 |
| BASF MAGNETICS GMBH | 4 | 1994–1996 |
| BASI MAGNETICS GMBH | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ludwigshafen, DE | 24 | 1976–1996 |