Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7086565 | Module for dispensing adhesive and adhesive applicator incorporating the module | — | 2006-08-08 |
| 4572874 | Polyterpene resin composition containing a blend of low molecular weight polyethylene based polymers | Irving B. Chang | 1986-02-25 |
| 4537922 | Sulfur stabilized oxidized polyolefin composition | Irving B. Chang | 1985-08-27 |
| 4497921 | Sulfur stabilized oxidized polyolefin and asphalt composition | Irving B. Chang | 1985-02-05 |
| 4496622 | Article coated with a sulfur stabilized oxidized polyolefin and asphalt composition | Irving B. Chang | 1985-01-29 |
| 4382989 | Roofing asphalt formulation | Irving B. Chang | 1983-05-10 |
| 4328147 | Roofing asphalt formulation | Irving B. Chang | 1982-05-04 |