Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7476766 | Bis(3-alkoxypropan-2-ol) sulfides, sulfoxides, and sulfones: new preparative methods | Andrew Wilson Wang, Kevin Rodney Lassila, Joseph Richard Krock, Nancy Mary Martin, Ge Zhang | 2009-01-13 |
| 7452848 | Amine-based gas hydrate inhibitors | Ingrid Kristine Meier, Richard Joseph Goddard | 2008-11-18 |
| 7230138 | Bis(3-alkoxypropan-2-ol) sulfides, sulfoxides, and sulfones: new preparative methods | Andrew Wilson Wang, Kevin Rodney Lassila, Joseph Richard Krock, Nancy Mary Martin, Ge Zhang | 2007-06-12 |
| 7009081 | N-methylated amines from selective vapor phase amination of amino ether alcohols | John William Mitchell, Richard Paul Underwood, Gamini Ananda Vedage, Hong-Xin Li | 2006-03-07 |
| 6924315 | Gemini glycidyl ether adducts of polyhydroxyalkyl alkylenediamines | Christine Peck Kretz, Kevin Rodney Lassila | 2005-08-02 |
| 6399830 | Selective reductive amination of nitriles | John N. Armor, William Eamon Carroll | 2002-06-04 |
| 6248925 | Selective reductive amination of nitriles | John N. Armor | 2001-06-19 |
| 5591799 | Aqueous emulsion materials containing copolymerized vinyl amide monomers and hydrolysis products thereof | Richard Henry Bott, William E. Lenney | 1997-01-07 |
| 5491199 | One step production of low salt vinylamine polymers | John N. Armor | 1996-02-13 |
| 5453478 | Ortho-alkylated tolidines | Kevin Rodney Lassila, Kenneth M. Kem, Susan M. Clift | 1995-09-26 |
| 5436299 | Decarbonylation of N-vinylformamide copolymers | John N. Armor | 1995-07-25 |
| 5401808 | Poly(vinylammonium formate) and process for making amidine-containing polymers | — | 1995-03-28 |
| 5393842 | Poly(vinylammonium formate) | — | 1995-02-28 |
| 5391710 | Production of amine functional polymers having improved purity | — | 1995-02-21 |
| 5367035 | Poly(vinylammonium formate) and process for making the same | — | 1994-11-22 |
| 5324792 | Process for making amidine-containing polymers | — | 1994-06-28 |
| 5072046 | Bis-[aminophenyl ketones] compounds | William F. Burogyne, Jr., Mark David Conner, Thomas A. Johnson | 1991-12-10 |
| 4952220 | Membranes formed from unsaturated polyimides | Michael Langsam, William F. Burgoyne, Jr., Jeremiah P. Casey | 1990-08-28 |
| 4931182 | Membranes formed from unsaturated polyimides | William F. Burgoyne, Jr., Michael Langsam, Jeremiah P. Casey | 1990-06-05 |
| 4918233 | Production of ethylenediamine from monoethanolamine and ammonia | Michel Deeba, Thomas A. Johnson | 1990-04-17 |
| 4864045 | Production of aminoethyl hydrogen sulfate | Thomas A. Johnson | 1989-09-05 |
| 4766247 | Color reduction of polyamines by mild catalytic hydrogenation | Thomas A. Johnson, Gamini Ananda Vedage | 1988-08-23 |
| 4720588 | Polyalkylene polyamines via vapor phase reaction using inert gas | Michael Gerard Turcotte, Cawas A. Cooper, Thomas A. Johnson | 1988-01-19 |
| 4618716 | Preparation of polyethylene polyamines from 2-aminoethyl sulfuric acid | Thomas A. Johnson | 1986-10-21 |
| 4617418 | Polyalkylene polyamines via vapor phase reaction | Thomas A. Johnson | 1986-10-14 |