US3819364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding hard metal composition
Assignee: Deutsche Edelstahlwerke GmbH
•
Filing: 1972-09-29
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Granted: 1974-06-25
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Expires: 1992-09-29
Abstract
Abstract A welding hard metal composition comprising a hardenable or hardened steel matrix bonding metal carbide particles, has a composition making it particularly adapted for deposition on steel and particularly on a hard metal composition of metal carbide particles bonded by a steel matrix.
Inventors
- 👤 F Frehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:15
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; B23K35/30; B23K35/3053; B23K35/308; Y; Y10; Y10T; Y10T29/00; Y10T29/19
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
90 words
The composition of claim 1 in which said matrix has a composition consisting essentially of: 0.4 to 0.6 percent by weight of C 0.5 to 0.9 percent by weight of Mn 8.0 to 15.5 percent by weight of Cr 1.5 to 3.5 percent by weight of Mo 0.5 to 0.9 percent by weight of Cu 0.001 to 0.01 percent by weight of B 0.1 to 0.5 percent by weight of V 0 to 0.3 percent by weight of Nb 0 to 1.5 percent by weight of Si Remainder - Fe
Claim 2
Dependent Claim
45 words
The composition of claim 1 in which by weight at least 50 percent of said particles are particles of titanium carbide with any balance of said particles selected from the class consisting of particles of carbides of titanium, chromium, vanadium, molybdenum, tungsten, tantalum, and zirconium.
Claim 3
Dependent Claim
29 words
The composition of claim 2 in which said particles are by weight from 32 to 35 percent titanium carbide particles with the balance of the alloy being said matrix.
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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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |