Patent US2177092A successfully refreshed from Google Patents.
US2177092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite material and method of producing same
Assignee: VERMICULITE Corp OF AMERICA
•
Filing: 1937-04-12
•
Granted: 1939-10-24
•
Expires: 1957-04-12
Abstract
No abstract record available.
Inventors
- 👤 James P Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:56
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/24; B29C67/242; B29C67/245; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B29C70/502; C; C04; C04B; C04B26/00; C04B26/02; C04B26/22; Y; Y10; Y10S; Y10S106/00; Y10S106/03; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31848; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/172; Y10T442/174; Y10T442/20
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) | 1942-10-23 | 1943-04-24 | 1943-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-23 | 1947-04-24 | 1947-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-23 | 1951-04-24 | 1951-10-24 | $7700.00 | Window Closed / Lapsed |