For the Inventor, By the Inventor

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Estarreja, Portugal

Dow Portugal Produtos Quimicos, Sociedade Unipessoal, Lda

USPTO Granted Patents = 2

EPO Patents = 1

Forward Citations = 0

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4 inventors (with patents filed for the assignee):

Helge Braun (2 out of 7 patents)

Brian L Cramm (2 out of 7 patents)

Robert E Hefner, Jr (2 out of 223 patents)

4. Armenio Costa (2 out of 3 patents)

5. Jr Robert E Hefner (0 patent)

2 patents: Sort by Forward Citations

1. 12091377 - Method for converting monoisocyanates to ureas (2024-09-17),

2. 12030836 - Phenyl isocyanate conversion process (2024-07-09),

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#1 in Estarreja

#91 in Portugal

Estarreja, Portugal

Dow Portugal Produtos Quimicos, Sociedade Unipessoal, Lda

Forward Citations = 0

4 inventors:

Helge Braun (2 out of 7 patents)

Brian L Cramm (2 out of 7 patents)

Robert E Hefner, Jr (2 out of 223 patents)

4. Armenio Costa (2 out of 3 patents)

5. Jr Robert E Hefner (0 patent)

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