Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5902842 | Temperature sensitive material | Robert John Whitwood | 1999-05-11 |
| 5849594 | Carbon dioxide sensitive material | Robert John Whitwood, Andrew Mills, Lela Margaret Monaf | 1998-12-15 |
| 5617812 | Tamper evident system | Robert John Whitwood | 1997-04-08 |
| 5439648 | Gas indicator for a package | Robert John Whitwood | 1995-08-08 |
| 5177341 | Thick film electrically resistive tracks | — | 1993-01-05 |
| 4999049 | Thick film electrically resistive track material | Alan R. Atterbury | 1991-03-12 |
| 4983810 | Heating unit with thermochromic region | — | 1991-01-08 |
| 4859835 | Electrically resistive tracks | — | 1989-08-22 |
| 4827108 | Substrates for supporting electrical tracks and/or components | — | 1989-05-02 |
| 4763099 | Temperature sensitive device | — | 1988-08-09 |