US3576708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asbestos materials of high dielectric strength and method of making same
Assignee: Nicolet Industries Inc
•
Filing: 1968-02-21
•
Granted: 1971-04-27
•
Expires: 1988-02-21
Abstract
Abstract (1) ASBESTOS ARTICLES OF IMPROVED DIELECTRIC STRENGTH ARE MADE BY DISTRIBUTING PULVERULENT EXFOLIATED VERMICULITE THROUGHOUT AN ASBESTOS FIBER-BINDER COMPOSITION; APPROXIMATELY 1 PART OF VERIMCULITE IS PRESENT PER 1-5 PARTS OF ASBESTOS. (2) A MATERIAL OF GREAT DIELECTRIC STRENGTH IS MADE BY WETTING THE ORDINARY SHEET OF THE ABOVE COMPOSITION WITH WATER SOLUTIONS OF ALUMINUM PHOSPHATE OR CERTAIN SILICO FLUORIDES, PRESSING THE WET SHEET AT ELEVATED PRESSURE FOR A TIME TO INCREASE THE DENSITY THEREOF AND, THEN DRYING THE WET, PRESSED ARTICLE.
Inventors
- 👤 Richard C Breiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:34
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/18; D21H13/00; D21H13/36; D21H13/38; D21H13/42; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |