US2047016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali silicate heat and sound insulating composition
Assignee: Individual
•
Filing: 1930-09-26
•
Granted: 1936-07-07
•
Expires: 1950-09-26
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel M Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:06
CPC Classifications
C; C04; C04B; C04B28/00; B; B64; B64C; B64C35/00; B64F; B64F1/00; B64F1/04; B64F1/06; C03; C03C; C03C11/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 0
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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) | 1939-07-07 | 1940-01-06 | 1940-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-07 | 1944-01-06 | 1944-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-07 | 1948-01-06 | 1948-07-07 | $7700.00 | Window Closed / Lapsed |