Patent US3548943A successfully refreshed from Google Patents.
US3548943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroless metal bonding of unconsolidated formations with backflow
Assignee: Shell USA Inc
•
Filing: 1969-08-14
•
Granted: 1970-12-22
•
Expires: 1989-08-14
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Simon
- 👤 Edwin A Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:14
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/32; C23C18/34; C23C18/36; C23C18/18; C23C18/20; C23C18/28; C23C18/30
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |