Patent US3677832A successfully refreshed from Google Patents.
US3677832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrided titanium alloys
Assignee: Surface Technology Corp
•
Filing: 1970-03-04
•
Granted: 1972-07-18
•
Expires: 1990-03-04
Abstract
Abstract A NOVEL GROUP OF NITRIDED ALLOYS HAVING EXCELLENT WEAR AND ABRASION RESISTANCE AND UTILITY AS CUTTING TOOL MATERIALS CONTAINING (A) TITANIUM, (B) ONE OR MORE METALS OR THE GROUP VANADIUM, COLUMBIUM, OR TANTALUM, AND (C) MOLYBDNUM OR TUNGSTEN. THE ALLOYS CAN BE READILY FABRICATED TO SHAPE AND THEN HARDENED BY NITRIDING TO PRODUCE HIGH SURFACE HARDNESS.
Inventors
- 👤 Ray J Van Thyne
- 👤 John J Rausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:07
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/16; C22F1/18; C22F1/183; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/24; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |