| 9957435 |
Methods for inhibiting iron sulfide scale in oil wells |
Larry P. Koskan, Barbara E. Moriarty |
2018-05-01 |
|
| 9914869 |
System and method for inhibiting scale formation in oil wells |
Larry P. Koskan |
2018-03-13 |
|
| 9605197 |
System and method for inhibiting scale formation in oil wells |
Larry P. Koskan |
2017-03-28 |
|
| 9382466 |
Method for inhibiting scale formation in oil wells |
Larry P. Koskan |
2016-07-05 |
|
| 9206062 |
Methods to recover and reclaim hydrocarbons or hydrophobic substances in an aqueous environment |
Larry P. Koskan, Jon Vander Wonde |
2015-12-08 |
|
| 8628669 |
Methods to recover and reclaim hydrocarbons or hydrophobic substances in an aqueous environment |
Larry P. Koskan, Jon Vander Woude |
2014-01-14 |
|
| 5861356 |
Method and composition for enhanced plant productivity comprising fertilizer and cross-linked polyamino acid |
Larry P. Koskan, J. Larry Sanders, Robert J. Ross |
1999-01-19 |
$75,000 |
| 5854177 |
Method for enhanced hydroponic plant productivity with polymeric acids |
Larry P. Koskan, J. Larry Sanders, Robert J. Ross |
1998-12-29 |
$66,000 |
| 5814582 |
Method for enhanced plant productivity |
Larry P. Koskan, Robert J. Ross, Lai-Duien Grace Fan |
1998-09-29 |
$154,000 |
| 5783523 |
Method and composition for enhanced hydroponic plant productivity with polyamino acids |
Larry P. Koskan, J. Larry Sanders, Robert J. Ross |
1998-07-21 |
$213,000 |
| 5593947 |
Method for more efficient uptake of plant growth nutrients |
Alan M. Kinnersley, Larry P. Koskan, David J. Strom |
1997-01-14 |
$828,000 |
| 5580840 |
Method and composition for preservation of cut flowers |
David J. Harms |
1996-12-03 |
$1,087,000 |
| 5508434 |
Production of a polysuccinimide and derivatives thereof in the presence of a sulfur-containing dehydrating agent |
Daniel A. Batzel, James F. Kneller |
1996-04-16 |
$1,128,000 |
| 5391764 |
Polyaspartic acid manufacture |
Larry P. Koskan, Kim C. Low, Anne M. Atencio |
1995-02-21 |
$930,000 |
| 5373086 |
Polyaspartic acid having more than 50% .beta. form and less that 50% .alpha. form |
Larry P. Koskan, Kim C. Low, Anne M. Atencio |
1994-12-13 |
$525,000 |
| 5373088 |
Production of polyaspartic acid from maleic acid and ammonia |
Larry P. Koskan |
1994-12-13 |
$525,000 |
| 5350735 |
Composition and method for enhanced fertilizer uptake by plants |
Alan M. Kinnersley, Larry P. Koskan, David J. Strom |
1994-09-27 |
$1,119,000 |
| 5315010 |
Polyaspartic acid manufacture |
Larry P. Koskan, Kim C. Low, Anne M. Atencio |
1994-05-24 |
$1,137,000 |
| 5296578 |
Production of polysuccinimide and polyaspartic acid from maleic anhydride and ammonia |
Larry P. Koskan |
1994-03-22 |
|
| 5221733 |
Manufacture of polyaspartic acids |
Larry P. Koskan, Kim C. Low, Anne M. Atencio |
1993-06-22 |
|
| 5219952 |
Production of high molecular weight polysuccinimide and high molecular weight polyaspartic acid from maleic anhydride and ammonia |
Larry P. Koskan |
1993-06-15 |
|
| 5152902 |
Polyaspartic acid as a calcium carbonate and a calcium phosphate inhibitor |
Larry P. Koskan, Kim C. Low, Anne M. Atencio |
1992-10-06 |
|