Patent US4634306A successfully refreshed from Google Patents.
US4634306A
Expired / Lapsed
US
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Writing point for writing or recording instruments and process for its manufacture
Assignee: JS Staedtler GmbH and Co KG
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Filing: 1983-11-28
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Granted: 1987-01-06
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Expires: 2003-11-28
Abstract
Abstract A writing point for a writing or recording instrument is completely or partially formed of a metallic glass or amorphous metal or the writing tip may be provided with a coating or surface layer of metallic glass or amorphous metal.
Inventors
- 👤 Peter Dzuik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
B; B43; B43K; B43K1/00; B43K1/10; B43K1/06; B43K1/08; B43K1/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
In a writing or recording instrument, a writing point having a portion thereof adapted to contact a writing surface and at least said portion comprising a coating of one of metallic glass or amorphous metal, said coating having a thickness of 1-500 μm, said metallic glass or amorphous metal is formed of alloys selected from the group comprising an alloy of at least one of iron, nickel and cobalt with at least one of phosphorous, boron, carbon, aluminum, silicon and chromium.
Claim 2
Dependent Claim
81 words
In a writing or recording instrument, a writing point having a portion thereof adapted to contact a writing surface and at least said portion comprising a coating of one of metallic glass or amorphous metal, said coating having a thickness of 1-500 μm, said metallic glass or amorphous metal is formed of alloys selected from the group comprising an alloy of at least one of iron, nickel and cobalt with at least one of phosphorous, boron, carbon, aluminum, silicon and chromium.
Claim 3
Dependent Claim
37 words
In a writing or recording instrument, as claimed in claim 1, wherein said portion has a zone of contact with a writing surface and said zone is formed of one of a metallic glass or amorphous metal.
Claim 4
Dependent Claim
30 words
In a writing or recording instrument, as claimed in claim 1, wherein said metallic glass or amorphous metal comprises a mixture of at least two components in a predetermined concentration.
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) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |