Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075278 | Chromogenic copy systems and methods | — | 1991-12-24 |
| 5053277 | Microcapsules and their production | — | 1991-10-01 |
| 5009919 | Finger-printing systems & method | — | 1991-04-23 |
| 4879134 | Fingerprinting compositions, systems and methods | — | 1989-11-07 |
| 4586060 | Microencapsulation process multi-walled microcapsules, transfer sheet record material and its production | — | 1986-04-29 |
| 4372583 | Chromogenic copy system and method | — | 1983-02-08 |
| 4308165 | Formation of microcapsules by interfacial cross-linking of emulsifier, and resulting microcapsules | David N. Vincent, Mabrin P. Powell | 1981-12-29 |
| 4303719 | Chromogenic copy system | — | 1981-12-01 |
| 4273672 | Microencapsulation process | — | 1981-06-16 |
| 4182788 | Microcapsular release system | David N. Vincent | 1980-01-08 |