David D. Songstad

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Polk County, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing transgenic cereal plants
- Patent number 5,736,369
- Issue date Apr 7, 1998
- Pioneer Hi-Bred International, Inc.
- Benjamin A. Bowen
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Methods for maintaining sterility in plants
- Patent number 5,717,129
- Issue date Feb 10, 1998
- Pioneer Hi-Bred International, Inc.
- David D. Songstad
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...