US3259489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra hard high speed steel
Assignee: Vasco Metals Corp
•
Filing: 1963-06-03
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Granted: 1966-07-05
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Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Jr John C Hamaker
- 👤 James R Handyside
- 👤 Daniel H Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:22
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN AN ALLOY STEEL WHICH IS CAPABLE OF BEING HARDENED BY TEMPERING TO A ROCKWELL "C" HARNESS OF 69-70 WITH SATISFACTORY HOT HARDNESS, WEAR RESISTANCE, GRINDABILITY, TOUGHNESS AND MACHINABILITY SUITABLE FOR USE IN MAKING CUTTING TOOLS FOR MACHINING HEAT TREATED HIGH STRENGTH STEELS AND TITANIUM ALLOYS, THE COMBINATION OF THE FOLLOW: ING WEIGHT PERCENTAGE OF:
Claim 2
Dependent Claim
55 words
IN AN ALLOY STEEL WHICH IS CAPABLE OF BEING HARDENED BY TEMPERING TO A ROCKWELL "C" HARNESS OF 69-70 WITH SATISFACTORY HOT HARDNESS, WEAR RESISTANCE, GRINDABILITY, TOUGHNESS AND MACHINABILITY SUITABLE FOR USE IN MAKING CUTTING TOOLS FOR MACHINING HEAT TREATED HIGH STRENGTH STEELS AND TITANIUM ALLOYS, THE COMBINATION OF THE FOLLOW: ING WEIGHT PERCENTAGE OF:
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |