Newton, IA, United States of America

Douglas M Haefele

This inventor holds 2 USPTO granted patents. Top assignee: Pioneer Hi-Bred International, Inc.. Active years: 1991-2015.


% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Location History:

  • Newton, IA (US) (1991)
  • Johnston, IA (US) (2015)

Company Filing History:


Years Active: 1991-2015

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2 patents (USPTO):Explore Patents
Profile summary based on public USPTO records.
Please report any incorrect information to [email protected]
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