Fluid sample flow cell
Abstract
Abstract 1,206,192. Treating fluorinated ethylene polymer surfaces. GILFORD INSTRUMENT LABORATORIES Inc. 12 Oct., 1967 [27 Oct., 1966], No. 3405/70. Divided out of 1,206,191. Heading C3P. The wettability of a fluorinated ethylene polymer workpiece surface is increased by reacting it with a solution containing an alkali metal naphthylate, rinsing the surface with water and cleaning the surface with dichlorodifluoromethane. The preferred naphthylate is sodium alpha-napthylate and the preferred polymer is polydichlorodifluoroethylene. Preferably the workpiece is immersed in a solution containing sodium alpha-naphthylate, rinsed in water and the excess water drained therefrom, cleaned in a bath of liquid dichlorodifluoromethane which is being subjected to ultrasonic vibrations and further cleaned by passing dichlorodifluoromethane vapour around it.
Inventors
- 👤 Robert J Emary
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |