Patent US4544353A successfully refreshed from Google Patents.
US4544353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic appliance for direct bonding to a tooth
Assignee: 3M Unitek Corp
•
Filing: 1982-10-12
•
Granted: 1985-10-01
•
Expires: 2002-10-12
Abstract
Abstract An orthodontic direct bond appliance has a body with a base. The base includes a rim extending from its periphery at an angle between about 90° and 170° so as to define a recess for receipt of bonding material. The rim shears off any excess flash.
Inventors
- 👤 Robert S. Maurer
- 👤 Min H. Tsai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:55
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12; A61C7/14; A61C7/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
An orthodontic direct bond appliance comprising: a body having an integral thin base portion extending therefrom, said base portion including a bonding surface wih a rim projecting from the periphery of said surface forming an inside angle with said surface ranging between about 90° to about 170°, said integral thin rim and bonding surface defining a recess adapted for receipt of bonding material, whereby the rim shears off any excess flash.
Claim 2
Dependent Claim
71 words
An orthodontic direct bond appliance comprising: a body having an integral thin base portion extending therefrom, said base portion including a bonding surface wih a rim projecting from the periphery of said surface forming an inside angle with said surface ranging between about 90° to about 170°, said integral thin rim and bonding surface defining a recess adapted for receipt of bonding material, whereby the rim shears off any excess flash.
Claim 3
Dependent Claim
15 words
An orthodontic appliance as claimed in claim 1, wherein said bonding surface is substantially planar.
Claim 4
Dependent Claim
16 words
An orthodontic applicance as claimed in claim 1, wherein said body and base portion are integral.
Claim 5
Dependent Claim
17 words
An orthodontic applicance as claimed in claim 1, wherein said body is secured to said base portion.
Claim 6
Dependent Claim
17 words
An orthodontic applicance as claimed in claim 1, wherein said body and base portion form a bracket.
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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |