Inventor
Helmut Kopke
Inventor
Weisenheim, DE
Overview
12→
Patents
1977–1995
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 12 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 transducer29%
Y10TTechnical subjects covered by former us classification26%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests21%
C08LCompositions of macromolecular compounds10%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%
C01GCompounds containing metals not covered by subclasses c01d or c01f2%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds2%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients2%
PatentTitleYear
5,462,810'Magnetic recording medium'19955,120,608'Magnetic recording media comprising a polyurethane binder resin containing perfluoro groups'19925,064,721'Magnetic recording media'19914,568,610'Magnetic recording media'19864,568,612'Magnetic recording media'19864,567,108'Magnetic recording media'19864,567,109'Magnetic recording media'19864,430,362'Production of magnetic recording media'19844,320,171'Magnetic recording media containing elastomeric polyurethane binders in the magnetic coating'19824,091,143'Magnetic recording media'19784,059,716'Manufacture of gamma-iron(III) oxide'19774,005,242'Magnetic recording medium containing lubricants'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1992Patents assigned to BASF AG (11)· patent assignee history
1977–1982Based in Ludwigshafen, DE· patent location history
1984–1995Based in Weisenheim, DE· patent location history
1995Patents assigned to BASF MAGNETICS GMBH (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 11 | 1977–1992 |
| BASF MAGNETICS GMBH | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Weisenheim, DE | 8 | 1984–1995 |
| Ludwigshafen, DE | 4 | 1977–1982 |