Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4440652 | Process for secondary recovery | — | 1984-04-03 |
| 4431778 | Process for secondary recovery | — | 1984-02-14 |
| 4430481 | Secondary recovery method | — | 1984-02-07 |
| 4430482 | Process for secondary recovery | — | 1984-02-07 |
| 4425453 | Asphaltic compositions containing alkoxylated terpolymers | — | 1984-01-10 |
| 4417989 | Propping agent for fracturing fluids | — | 1983-11-29 |
| 4406799 | Process for secondary recovery | — | 1983-09-27 |
| 4403071 | Sulfated ethoxylated acrylic acid polymer product | — | 1983-09-06 |
| 4343712 | Process for secondary recovery | — | 1982-08-10 |
| 4341647 | Process for secondary recovery | — | 1982-07-27 |
| 4338203 | Process for secondary recovery | — | 1982-07-06 |
| 4331796 | Secondary recovery process | — | 1982-05-25 |
| 4326969 | Process for secondary recovery | — | 1982-04-27 |
| 4298479 | Secondary recovery process utilizing thickened water | — | 1981-11-03 |
| 4297226 | Process for secondary recovery | — | 1981-10-27 |
| 4297469 | Bipolymer of vinyl sulfonic acid-glycidol adduct and acrylamide | — | 1981-10-27 |
| 4228019 | Secondary recovery process | — | 1980-10-14 |
| 4228016 | Secondary recovery process | — | 1980-10-14 |
| 4228017 | Secondary recovery process | — | 1980-10-14 |
| 4228018 | Secondary recovery process | — | 1980-10-14 |
| 4226731 | Secondary recovery process utilizing sulfonated polyphenols | — | 1980-10-07 |
| 4226730 | Secondary recovery method utilizing thickened water | — | 1980-10-07 |
| 4217230 | Secondary recovery process | — | 1980-08-12 |
| 4216098 | Secondary recovery process | — | 1980-08-05 |
| 4187185 | Oil recovery process using oxyalkylated additives | Jack H. Park | 1980-02-05 |