Patent US2302051A successfully refreshed from Google Patents.
US3541194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making syntactic foam
Assignee: United States Department of the Navy
•
Filing: 1968-10-15
•
Granted: 1970-11-17
•
Expires: 1988-10-15
Abstract
No abstract record available.
Inventors
- 👤 Israel Resnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/36; B29C70/58; B29C70/66; C; C08; C08J; C08J9/00; C08J9/32; B29K; B29K2105/00; B29K2105/04; B29K2105/06; B29K2105/16; B29K2105/165; Y; Y10; Y10S; Y10S264/00; Y10S264/06
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |