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For the Inventor, By the Inventor

Duren, Germany

Erhard Wolfrum

USPTO Granted Patents = 4

Average Co-Inventor Count = 2.2

ph-index = 3

Forward Citations = 24(Granted Patents)


Location History:

  • 5160 Duren (Rheinland), DE (1980)
  • Duren, DE (1983 - 1984)
  • Duren-Birgel, DE (1990)

Company Filing History:

goldMedal2 out of 48 
 
Rheinische Braunkohlenwerke Ag
 patents
silverMedal1 out of 6,662 
 
Hoechst Aktiengesellschaft
 patents
bronzeMedal2 out of 832,718 
Other
 patents
where one patent can have more than one assignee

Years Active: 1980-1990

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4 patents (USPTO):Explore Patents
1. 4930359 - Apparatus for preparing samples from a flow of bulk material (1990-06-05),
2. 4450777 - Process for removing noxious substances containing fluorine and/or (1984-05-29),
3. 4391786 - Production of calcium carbide (1983-07-05),
4. 4242225 - Method and apparatus for producing active coke (1980-12-30),
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