Patent US5125838A successfully refreshed from Google Patents.
US5125838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endodontic canal instrument made of titanium
Assignee: Micro Mega International Manufactures SA
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Filing: 1990-04-09
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Granted: 1992-06-30
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Expires: 2010-04-09
Abstract
Abstract Canal instrument used in endodontics, characterized in that its flexible blade is made at least partially of titanium or of titanium alloy.
Inventors
- 👤 Michel Seigneurin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:53
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/40; A61C5/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
28 words
A canal instrument used in endodontics for preparing a root canal having curved portions, wherein the canal instrument has flexible blade portions formed at least partially of titanium.
Claim 2
Dependent Claim
28 words
A canal instrument used in endodontics for preparing a root canal having curved portions, wherein the canal instrument has flexible blade portions formed at least partially of titanium.
Claim 3
Dependent Claim
14 words
The canal instrument of claim 1 wherein the titanium is formed as an alloy.
Claim 4
Dependent Claim
15 words
The canal instrument of claim 2 wherein the titanium alloy contains at least 50% titanium.
Claim 5
Dependent Claim
13 words
The canal instrument of claim 2 wherein the titanium alloy is predominantly titanium.
References Cited (Backward Citations)
DE3620527A1
Cited
US5066230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-30 | 1995-12-30 | 1996-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-30 | 1999-12-30 | 2000-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-30 | 2003-12-30 | 2004-06-30 | $7700.00 | Window Closed / Lapsed |