Inventor
Werner Steck
Inventor
Mutterstadt, DE
Overview
Patents· 41 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 transducer30%
H01FMagnets15%
B22FWorking metallic powder11%
C01GCompounds containing metals not covered by subclasses c01d or c01f10%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds10%
C07CAcyclic or carbocyclic compounds5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
C23CCoating metallic material2%
Y02PClimate change mitigation technologies in the production or processing of goods2%
Y10TTechnical subjects covered by former us classification2%
PatentTitleYear
5,077,438'Process for the preparation of acrolein'19915,047,161'Preparation of isometric cobalt- and titanium-containing magnetic iron oxides'19915,015,785'Preparation of mixtures of isomeric cresols with a molar ratio of para- to meta-cresol of at least 0.6:1 to 10:1'19915,009,877'Stabilization of acicular ferromagnetic chromium dioxide'19915,002,639'Separation of ortho-, meta- and para-tolunitrile from ternary mixtures of the isomers'19914,967,013'Preparation of hydroxybenzaldehydes'19904,960,462'Acicular, ferromagnetic metal particles essentially consisting of iron, and their preparation'19904,933,004'Preparation of acicular ferromagnetic metal particles of substantially iron'19904,826,671'Preparation of acicular .alpha.-Fe.sub.2 O.sub.3'19894,810,401'Superparamagnetic solid particles'19894,781,851'Preparation of ferromagnetic chromium dioxide'19884,774,072'Preparation of acicular alpha-Fe.sub.2 O.sub.3'19884,770,903'Preparation of cobalt-containing, acicular, magnetic iron oxides'19884,755,315'Preparation of cobalt-containing isotropic magnetic iron oxides'19884,755,395'Preparation of acicular cobalt-containing ferrimagnetic iron oxides'19884,729,785'Preparation of acicular ferromagnetic metal particles consisting essentially of iron'19884,631,140'Ferrimagnetic particles and their preparation'19864,495,246'Acicular ferromagnetic chromium dioxide particles'19854,464,352'Manufacture of acicular ferrimagnetic iron oxide'19844,439,231'Preparation of acicular ferromagnetic metal particles consisting essentially of iron'19844,420,330'Stabilization of pyrophoric ferromagnetic acicular metal particles consisting essentially of iron'19834,378,240'Preparation of acicular ferromagnetic metal particles consisting essentially of iron'19834,367,214'Manufacture of acicular ferrimagnetic iron oxide'19834,360,377'Ferromagnetic metal particles, consisting essentially of iron and carrying a surface coating, and their production'19824,344,791'Manufacture of acicular ferromagnetic iron particles'19824,296,149'Manufacture of acicular cobalt-containing magnetic iron oxide'19814,295,879'Manufacture of acicular ferromagnetic iron particles'19814,287,233'Manufacture of acicular cobalt-containing magnetic iron oxide'19814,272,563'Manufacture of magnetic recording media having a wear-resistant surface'19814,259,368'Manufacture of acicular magnetic iron oxide'19814,221,776'Manufacture of acicular ferrimagnetic iron oxides'19804,213,959'Manufacture of acicular, ferrimagnetic iron oxide'19804,188,302'Manufacture of acicular cobalt-modified magnetic iron oxide'19804,178,171'Manufacture of acicular ferromagnetic iron particles'19794,165,232'Manufacture of ferromagnetic metal particles essentially consisting of iron'19794,155,748'Manufacture of ferromagnetic metal particles consisting essentially of iron'19794,128,672'Process of making a magnetic recording medium'19784,061,726'Manufacture of acicular .gamma.-iron(III) oxide'19773,993,807'Activation of substrates for electroless metallization with zero valent palladium complex'19763,961,990'Manufacture of magnetic materials which exhibit exchange anisotropy'19763,959,032'Magnetic materials with exchange anisotropy and process for their manufacture'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1991Patents assigned to BASF AG (40)· patent assignee history
1976–1984Based in Mutterstadt, DE· patent location history
1983–1991Based in Ludwigshafen, DE· patent location history
1991Patents assigned to HIBST HARTMUT (1)· patent assignee history
1991Patents assigned to JAKUSCH HELMUT (1)· patent assignee history
1991Patents assigned to STECK WERNER (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 40 | 1976–1991 |
| HIBST HARTMUT | 1 | 1991 |
| JAKUSCH HELMUT | 1 | 1991 |
| STECK WERNERself | 1 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Mutterstadt, DE | 21 | 1976–1984 |
| Ludwigshafen, DE | 20 | 1983–1991 |