US4626209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic bracket with metallic coated bonding base
Assignee: 3M Unitek Corp
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Filing: 1984-04-17
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Granted: 1986-12-02
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Expires: 2004-04-17
Abstract
Abstract An orthodontic bracket containing a thin metallic coating on the bracket base; the coating being applied onto the bracket base by thermally spraying a molten metallic powder.
Inventors
- 👤 Min H. Tsai
- 👤 John E. Sargeant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:38
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
An orthodontic device comprising a stainless steel bracket having an integral bonding base with a thin coating having asperities, said coating being formed onto said bonding base by thermally sprayed molten corrosion resistant titanium carbide powder.
Claim 2
Dependent Claim
36 words
An orthodontic device comprising a stainless steel bracket having an integral bonding base with a thin coating having asperities, said coating being formed onto said bonding base by thermally sprayed molten corrosion resistant titanium carbide powder.
References Cited (Backward Citations)
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US4145764A
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US4049841A
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US4114272A
Cited
US4243386A
Cited
US4263341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |