Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5354788 | Dialdehyde modified phenolic foundry sand core binder resins, processes for making same, and process for preparing foundry cores and molds employing same | Calvin K. Johnson, Sudhir K. Trikha | 1994-10-11 |
| 5281644 | Ambient temperature hardening binder compositions | S. Raja Iyer, Arthur H. Gerber | 1994-01-25 |
| RE34228 | Alkaline benzylic ether phenolic resin binders | Merlyn C. Pasion | 1993-04-20 |
| 5089540 | Processes and compositions to enhance the tensile strength of reclaimed sand bonded with alkaline resins | S. Raja Iyer, Merlyn C. Pasion | 1992-02-18 |
| 5077323 | Method to improve flowability of alkaline phenolic resin coated sand | Calvin K. Johnson, Richard Cooke | 1991-12-31 |
| 5021539 | Alkaline benzylic ether phenolic resin binders | Merlyn C. Pasion | 1991-06-04 |
| 4971132 | Alkaline phenolic resole resin binders | Kwok-tuen Tse | 1990-11-20 |
| 4929648 | Alkaline phenolic resole resin binders | Kwok-tuen Tse | 1990-05-29 |
| 4785884 | Consolidation of partially cured resin coated particulate material | — | 1988-11-22 |
| 4722991 | Phenol-formaldehyde-furfuryl alcohol resins | — | 1988-02-02 |
| 4713294 | Foundry shell core and mold composition | Calvin K. Johnson | 1987-12-15 |
| 4694905 | Precured coated particulate material | — | 1987-09-22 |
| 4677187 | Furfuryl alcohol-aldehyde resins | Merlyn C. Pasion | 1987-06-30 |
| 4495316 | Acid-curable fluoride-containing no-bake foundry resins | — | 1985-01-22 |
| 4487868 | Foundry core compositions | Luis Rodriguez | 1984-12-11 |
| 4439489 | Particles covered with a cured infusible thermoset film and process for their production | Calvin K. Johnson | 1984-03-27 |