Inventor

Paul Deigner

Inventor

Weisenheim, DE

Overview

19→

Patents

1976–1988

Patent span

Physics

Primary field (CPC G)

Patents· 19 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 transducer37%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%

Y10TTechnical subjects covered by former us classification12%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds10%

C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties10%

H01FMagnets7%

C04BLime, magnesia2%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%

C23CCoating metallic material2%

G01RMeasuring electric variables2%

PatentTitleYear

4,717,091'Tape cassette, in particular a video tape cassette, and a pressure spring therefor'1988 4,423,454'Magnetic recording disk'1983 4,382,244'Device for magnetically orienting the magnetizable particles or magnetic recording media in a preferred direction'1983 4,327,139'Rigid magnetic recording disk having perfluoropolyether lubricant'1982 4,275,114'Magnetic recording medium and method of stabilization of chromium dioxide magnetic pigments'1981 4,272,563'Manufacture of magnetic recording media having a wear-resistant surface'1981 4,271,234'Iron oxide magnetic pigments for the production of magnetic coatings'1981 4,201,149'Apparatus for spin coating in the production of thin magnetic layers for magnetic discs'1980 4,201,486'Process for the manufacture of magnetic recording media'1980 4,177,317'Stabilization of chromium dioxide magnetic pigments'1979 4,169,912'Iron oxide magnetic pigments for the production of magnetic coatings'1979 4,133,911'Manufacture of magnetic discs'1979 4,128,672'Process of making a magnetic recording medium'1978 4,017,303'Manufacture of acicular ferromagnetic metal pigments containing iron'1977 4,003,336'Device for the magnetic orientation of magnetic recording media'1977 3,993,807'Activation of substrates for electroless metallization with zero valent palladium complex'1976 3,984,763'Device for the non-destructive measurement of the remanent flux density of magnetic recording media, especially magnetic discs'1976 3,961,990'Manufacture of magnetic materials which exhibit exchange anisotropy'1976 3,959,032'Magnetic materials with exchange anisotropy and process for their manufacture'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1988Patents assigned to BASF AG (17)· patent assignee history

1976–1981Based in Weisenheim, DE· patent location history

1979–1981Patents assigned to DYNAMIT NOBEL AG (2)· patent assignee history

1982–1983Based in Willstaett, DE· patent location history

1988Based in Kehl, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BASF AG	17	1976–1988
DYNAMIT NOBEL AG	2	1979–1981

Locations

Location	Patents	Span
Weisenheim, DE	15	1976–1981
Willstaett, DE	3	1982–1983
Kehl, DE	1	1988