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For the Inventor, By the Inventor

Ludwigshafen, Germany

Werner Stumpfi

This inventor holds 5 USPTO granted patents. Top assignee: Basf Aktiengesellschaft. Active years: 1976-1985.

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 7.0

ph-index = 5

Forward Citations = 45(Granted Patents)


Company Filing History:

goldMedal5 out of 10,816 
 
Basf Aktiengesellschaft
 patents

Years Active: 1976-1985

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5 patents (USPTO):Explore Patents
1. 4541587 - Hub for magnetic tape cassettes, especially compact cassettes, and (1985-09-17),
2. 4515331 - Hub for magnetic tape cassettes, especially compact cassettes, and (1985-05-07),
3. 4177317 - Stabilization of chromium dioxide magnetic pigments (1979-12-04),
4. 4017303 - Manufacture of acicular ferromagnetic metal pigments containing iron (1977-04-12),
5. 3961990 - Manufacture of magnetic materials which exhibit exchange anisotropy (1976-06-08),

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