Birk; Jeffrey H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Birk; Jeffrey H..The latest application filed is for "method for controlling aquatic weeds".
- Birk; Jeffrey H. - Raleigh NC US
- Birk; Jeffrey H. - Morrisville PA
| Patent | Date |
|---|---|
| Method for controlling aquatic weeds Grant 9,060,516 - Zawierucha , et al. June 23, 2 | 2015-06-23 |
| Method of controlling the aquatic weed Hydrilla verticillata Grant 8,080,497 - Zawierucha , et al. December 20, 2 | 2011-12-20 |
| Method for Controlling Aquatic Weeds App 20090011934 - Zawierucha; Joseph ; et al. | 2009-01-08 |
| Method of Controlling the Aquatic Weed Hydrilla Verticillata App 20080305954 - Zawierucha; Joseph ; et al. | 2008-12-11 |
| Aryloxyspiroalkylindolinone herbicides Grant 5,182,397 - Condon , et al. January 26, 1 | 1993-01-26 |
| Method for safening gramineous crops against pyridine imidazolinone herbicides Grant 4,992,092 - Birk , et al. February 12, 1 | 1991-02-12 |
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