Issued Patents All Time
Showing 26–50 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4999161 | Modified polymers incorporating fatty amines | Claudia C. Pierce, David A. Grattan | 1991-03-12 |
| 4997890 | Sulfomethylation of high molecular weight polyacrylamide | Ralph W. Kaesler | 1991-03-05 |
| 4983686 | Chemical modification of polyacrylamide and polyacrylic acids/acrylamide gels | Ralph W. Kaesler | 1991-01-08 |
| 4973428 | Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom | Donald A. Johnson, John E. Hoots, Guy A. Crucil | 1990-11-27 |
| 4970290 | Alkoxylated/cationically modified amide-containing polymers | — | 1990-11-13 |
| 4952642 | Process for making acrylamido methane sulfonic acid polymers | — | 1990-08-28 |
| 4929425 | Cooling water corrosion inhibition method | John E. Hoots, Donald A. Johnson, James F. Kneller | 1990-05-29 |
| 4923634 | Cooling water corrosion inhibition method | John E. Hoots, Donald A. Johnson, James F. Kneller | 1990-05-08 |
| 4921903 | Process for preparing high molecular weight hydrophobic acrylamide polymers | — | 1990-05-01 |
| 4919821 | Modified maleic anhydride polymers and the like for use as scale inhibitors | John E. Hoots, Donald A. Johnson, James F. Kneller | 1990-04-24 |
| 4898686 | Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom | Donald A. Johnson, John E. Hoots, Guy A. Crucil | 1990-02-06 |
| 4886872 | Novel cationic hydroxamate polymers | Josepha M. Fu | 1989-12-12 |
| 4885345 | Alkoxylated/cationically modified amide-containing polymers | — | 1989-12-05 |
| 4868248 | Polyhydroxyamic acid polymers from polyacrylic acids | John W. Sparapany, Josepha M. Fu | 1989-09-19 |
| 4829121 | Process for sulfoethylation of high molecular weight acrylamide containing polysoap latex polymers | Ralph W. Kaesler | 1989-05-09 |
| 4818506 | Gypsum scale inhibitors for flue gas desulfurization systems | Mei-Jan L. Lin, Richard J. Mouche, Baker N. Nimry | 1989-04-04 |
| 4802992 | Removal of dispersed oil from water | Ann M. Halverson | 1989-02-07 |
| 4801388 | Modified acrylamide polymers used as scale inhibitors | John E. Hoots, Donald A. Johnson | 1989-01-31 |
| 4795789 | Process for making acrylamido methane sulfonic acid polymers | — | 1989-01-03 |
| 4777219 | Carboxylate containing modified acrylamide polymers | — | 1988-10-11 |
| 4770795 | Calcium tolerant deflocculant for drilling fluids | David M. Giddings | 1988-09-13 |
| 4769432 | Water-soluble quaternary cationic monomers | — | 1988-09-06 |
| 4762894 | Sulfomethylamide-containing polymers | David J. Kowalski | 1988-08-09 |
| 4756881 | Composition of corrosion inhibitors for cooling water systems using chemically modified acrylamide or methacrylamide polymers | John E. Hoots, Donald A. Johnson | 1988-07-12 |
| 4752443 | Cooling water corrosion inhibition method | John E. Hoots, Donald A. Johnson, James F. Kneller | 1988-06-21 |