Arens; Robert P.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Arens; Robert P..The latest application filed is for "time-temperature integrating indicator device".
- Arens; Robert P. - St. Paul MN
- Arens; Robert P. - North St. Paul MN
| Patent | Date |
|---|---|
| Time-temperature integrating indicator device Grant 5,667,303 - Arens , et al. September 16, 1 | 1997-09-16 |
| Article for use in forming a permanent image using a temporary marker Grant 5,389,426 - Arens , et al. February 14, 1 | 1995-02-14 |
| Article capable of displaying defined images Grant 5,354,598 - Arens October 11, 1 | 1994-10-11 |
| Reusable bingo card Grant 4,877,253 - Arens October 31, 1 | 1989-10-31 |
| Imaging device Grant 4,729,687 - Arens March 8, 1 | 1988-03-08 |
| Thermally-activated time-temperature indicator Grant 4,428,321 - Arens January 31, 1 | 1984-01-31 |
| Oil-repellent microvoid-imaging material Grant 4,374,889 - Arens February 22, 1 | 1983-02-22 |
| Demand and timed renewing imaging media Grant 4,299,880 - Arens November 10, 1 | 1981-11-10 |
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