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For the Inventor, By the Inventor

Duesseldorf, Germany

Winfried Kirchhoff

USPTO Granted Patents = 4

Average Co-Inventor Count = 3.6

ph-index = 4

Forward Citations = 96(Granted Patents)


Location History:

  • Dusseldorf, DE (1978)
  • Duesseldorf, DE (1984 - 1990)

Company Filing History:

goldMedal2 out of 2,080 
 
Henkel Kommanditgesellschaft Auf Aktien
 patents
silverMedal1 out of 180 
 
Henkel Kommanditgesellschaft Auf Aktien (henkel Kgaa)
 patents
bronzeMedal1 out of 89 
 
Henkel Kgaa
 patents

Years Active: 1978-1990

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4 patents (USPTO):Explore Patents
1. 4939001 - Process for sealing anodized aluminum (1990-07-03),
2. 4756771 - Colorless sealing layers for anodized aluminum surfaces (1988-07-12),
3. 4445983 - Sealing anodically produced oxide layers, on aluminum (1984-05-01),
4. 4121980 - Method of sealing oxidized aluminum surfaces with aqueous solutions of (1978-10-24),
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