Patent US2798474A successfully refreshed from Google Patents.
US2798474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard-metal containing mixtures and processes of applying them to supporting bodies and supporting bodies so treated
Assignee: Deutsche Edelstahlwerke AG
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Filing: 1952-09-15
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Granted: 1957-07-09
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Expires: 1972-09-15
Abstract
No abstract record available.
Inventors
- 👤 Ballhausen Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; B; B60; B60C; B60C11/00; B60C11/14; B60C11/16; C22C29/14; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C24/103; C23C4/00; C23C4/04; C23C4/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12042; Y10T428/12063; Y10T428/1209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A STONE-CUTTING SAW BLADE FORMED WITH A CUTTING PORTION CONSISTING ESSENTIALLY OF DISTRIBUTED HARD METAL CONSTITUENTS INDIVIDUALLY COMPOSED ESSENTIALLY OF AT LEAST ONE CARBIDE SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, MOLYBDENUM, VANADIUM, TITANIUM, TANTALUM AND COLUMBIUM AND AN AUXILIARY PHASE IN THE FORM OF A RELATIVELY LOW MELTING-POINT BONDING METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKLE AND COBALT, WHICH CONSTITUENTS ARE SECURED TO A PART OF THE SAW BLADE BY A FUSED MATERIAL WHICH INITIALLY COMPRISED A POWDER CONTAINING ESSENTIALLY FROM 5 TO 30% CHROMIUM BORIDE AND AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKLE AND COBALT.
Claim 2
Dependent Claim
104 words
A STONE-CUTTING SAW BLADE FORMED WITH A CUTTING PORTION CONSISTING ESSENTIALLY OF DISTRIBUTED HARD METAL CONSTITUENTS INDIVIDUALLY COMPOSED ESSENTIALLY OF AT LEAST ONE CARBIDE SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, MOLYBDENUM, VANADIUM, TITANIUM, TANTALUM AND COLUMBIUM AND AN AUXILIARY PHASE IN THE FORM OF A RELATIVELY LOW MELTING-POINT BONDING METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKLE AND COBALT, WHICH CONSTITUENTS ARE SECURED TO A PART OF THE SAW BLADE BY A FUSED MATERIAL WHICH INITIALLY COMPRISED A POWDER CONTAINING ESSENTIALLY FROM 5 TO 30% CHROMIUM BORIDE AND AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF IRON, NICKLE AND COBALT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |