US3451791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cobalt-bonded tungsten carbide
Assignee: EIDP Inc
•
Filing: 1967-08-16
•
Granted: 1969-06-24
•
Expires: 1987-08-16
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey W Meadows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:31
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C22C29/08; C22C29/067; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10S75/00; Y10S75/95; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12167; Y10T428/12174; Y10T428/12465; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US873745A
Cited
US1057423A
Cited
US1338132A
Cited
US1951133A
Cited
US2011369A
Cited
US1998609A
Cited
US2116399A
Cited
US2113171A
Cited
US2122403A
Cited
US2731711A
Cited
GB1041958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |