US4170474A
Expired / Lapsed
US
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Powder metal composition
Assignee: Pitney Bowes Inc
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Filing: 1978-10-23
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Granted: 1979-10-09
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Expires: 1998-10-23
Abstract
Abstract A powder metal composition containing 1.0-2.5% Ni, 0.3-0.7% Mo, 0.15-0.30% Mn, 0.5-1.5% Cu, 0.3-0.7% C, 0.50-1.0% zinc stearate, the balance being Fe.
Inventors
- 👤 Yew-Tsung Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:53
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0264
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
22 words
A powder metal composition comprising: 1.0-2.5% Ni, 0.3-0.7 Mo, 0.15-0.30 Mn, 0.5-1.5% Cu, 0.3-0.7 C, 0.50-1.0% zinc stearate, the balance being Fe.
Claim 2
Dependent Claim
22 words
A powder metal composition comprising: 1.0-2.5% Ni, 0.3-0.7 Mo, 0.15-0.30 Mn, 0.5-1.5% Cu, 0.3-0.7 C, 0.50-1.0% zinc stearate, the balance being Fe.
Claim 3
Dependent Claim
37 words
The composition of claim 1 wherein said amount of Ni is 1.8%, said amount of Mo 0.6%, said amount of Mn is 0.25%, said amount of C is 0.6%, and said amount of zinc stearate is 0.75%.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said amount of Cu is 0.82%.
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) | 1982-10-08 | 1983-04-09 | 1983-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-08 | 1987-04-09 | 1987-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-08 | 1991-04-09 | 1991-10-09 | $7700.00 | Window Closed / Lapsed |