Patent US4100678A successfully refreshed from Google Patents.
US4100678A
Expired / Lapsed
US
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Metal bracket for use in orthodontic treatment
Assignee: Individual
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Filing: 1976-10-18
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Granted: 1978-07-18
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Expires: 1996-10-18
Abstract
Abstract A metal bracket for use in orthodontic treatment is provided which comprises a bracket body for receiving and securing a wire which transmits orthodontic force to the tooth and a support base for supporting said bracket body. A plurality of fine pores in the form of undercut is formed by subjecting the base to sand-blasting treatment and then to etching process. Such metal brackets have strong adhesion to the teeth.
Inventors
- 👤 Kenichi Yatabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:41
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12; A61C7/14; A61C7/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A metal bracket for use in orthodontic treatment which comprises a bracket body for receiving and securing a wire which transmits orthodontic force to the tooth and a support base for supporting said bracket body and which is adhered to the tooth, a plurality of fine pores in the form of undercut pores being formed in the support base by blowing fine particles of solids entrained in a pressurized fluid against the support base and then immersing the resulting scarred base in an oxidizing solution.
Claim 2
Dependent Claim
85 words
A metal bracket for use in orthodontic treatment which comprises a bracket body for receiving and securing a wire which transmits orthodontic force to the tooth and a support base for supporting said bracket body and which is adhered to the tooth, a plurality of fine pores in the form of undercut pores being formed in the support base by blowing fine particles of solids entrained in a pressurized fluid against the support base and then immersing the resulting scarred base in an oxidizing solution.
Claim 3
Dependent Claim
22 words
The metal bracket as claimed in claim 1 wherein a plurality of through-pores are provided along the periphery of said support base.
Claim 4
Dependent Claim
17 words
The metal bracket as claimed in claim 1 wherein said solids are selected from carborundum and silica.
Claim 5
Dependent Claim
18 words
The metal bracket as claimed in claim 1 wherein said oxidizing solution is a solution of ferric chloride.
References Cited (Backward Citations)
US3932940A
Cited
US3765091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |