US1854899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making refractory insulating material
Assignee: Individual
•
Filing: 1929-02-01
•
Granted: 1932-04-19
•
Expires: 1949-02-01
Abstract
No abstract record available.
Inventors
- 👤 Goldschmidt Victor Moritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:32
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/06; C04B38/063; C04B38/0635; C04B38/0645; C04B38/0675; C04B38/068; Y; Y10; Y10S; Y10S264/00; Y10S264/63; Y10S266/00; Y10S266/905
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) | 1935-04-19 | 1935-10-19 | 1936-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-19 | 1939-10-19 | 1940-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-19 | 1943-10-19 | 1944-04-19 | $7700.00 | Window Closed / Lapsed |