Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822847 | Method of increasing viscosity of an aqueous solution with a sulfo betaine polymer | Jeffrey J. Kaladas | 1989-04-18 |
| 4792593 | Novel acrylamide acrylate copolymers | Enock Berluche, John J. Maurer, Jan Bock | 1988-12-20 |
| 4788247 | Terpolymers of acrylamide, alkyl polyetheroxyacrylate and betaine monomers | Ilan Duvdevani, Jan Bock, Jeff J. Kaladas | 1988-11-29 |
| 4742135 | Terpolymers of acrylamide, alkylacrylamide and betaine monomers | Ilan Duvdevani, Jan Bock, Enock Berluche | 1988-05-03 |
| 4715865 | Method for controlling viscosity of organic liquids and compositions | Kissho Kitano, Ilan Duvdevani | 1987-12-29 |
| 4709759 | Enhanced oil recovery with hydrophobically associating polymers containing N-vinyl-pyrrolidone functionality | Jan Bock, Salvatore J. Pace | 1987-12-01 |
| 4708998 | Cyclopolymerizable sulfobetaine monomer | Jeffrey J. Kaladas | 1987-11-24 |
| 4663408 | Tetrapolymers of N-vinyl pyrrolidone/acrylamide/salt of acrylic acid/N-alkyl acrylamide | Enock Berluche, John J. Maurer, Jan Bock | 1987-05-05 |
| 4650848 | Terpolymers of acrylamide, alkylacrylamide and betaine monomers | Ilan Duvdevani, Jan Bock, Enock Berluche | 1987-03-17 |
| 4625745 | Drag reduction agents for hydrocarbon solutions | Ralph M. Kowalik, Ilan Duvdevani, Kissho Kitano | 1986-12-02 |
| 4621111 | Acid base interacting polymer solutions | Ilan Duvdevani, Kissho Kitano, Dennis G. Peiffer | 1986-11-04 |
| 4607076 | Betaine copolymers-viscosifiers for water and brine | Kissho Kitano | 1986-08-19 |
| 4599377 | Acid base interacting polymer solutions | Ilan Duvdevani, Kissho Kitano, Dennis G. Peiffer | 1986-07-08 |
| 4586937 | Antimisting system for hydrocarbon fluids | Ilan Duvdevani, John A. Eckert, Kissho Kitano | 1986-05-06 |
| 4585846 | Cyclopolymerizable sulfobetaine monomer | Jeffrey J. Kaladas | 1986-04-29 |
| 4579926 | Process for the formation of novel acrylamide acrylate copolymers | John J. Maurer, Jan Bock | 1986-04-01 |
| 4560710 | Drag reduction agent | Dennis G. Peiffer, Ralph M. Kowalik, Jeffrey J. Kaladas | 1985-12-24 |
| 4546784 | Drag reduction agent | Ralph M. Kowalik, Jan Bock, John J. Maurer | 1985-10-15 |
| 4537939 | Process for production of polymers having increased 1,2-microstructure | James E. Hall | 1985-08-27 |
| 4523929 | Antimisting system for hydrocarbon fluids | Ilan Duvdevani, John A. Eckert, Kissho Kitano | 1985-06-18 |
| 4518757 | Drag reduction agent for hydrocarbon liquid | Kissho Kitano, Terry J. Burkhardt, Arthur W. Langer, Jr. | 1985-05-21 |
| 4480693 | Fluid loss control in oil field cements | John C. Newlove, Robert C. Portnoy, Kissho Kitano | 1984-11-06 |
| 4476240 | Catalyst system containing an anionic initiator based on lithium and phosphine oxide modifier | James E. Hall | 1984-10-09 |
| 4463151 | Process for the formation of novel acrylamide acrylate copolymers | John J. Maurer, Jan Bock | 1984-07-31 |
| 4463152 | Acrylamide acrylate copolymers | John J. Maurer, Jan Bock | 1984-07-31 |