US3535150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the freeness of asbestos
Assignee: Asbestos Corp Ltd
•
Filing: 1967-04-03
•
Granted: 1970-10-20
•
Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Solomon George Lipsett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:04
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1055; B; B01; B01D; B01D39/00; B01D39/02; B01D39/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; 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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |