US3717932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tooth replacement
Assignee: Vitredent Corp
•
Filing: 1970-06-01
•
Granted: 1973-02-27
•
Expires: 1990-06-01
Abstract
Abstract A dental implant member for attachment to an artificial-tooth crown consists of or is externally coated with an impermeable carbon. The implant is preferably cone shaped and most preferably has external splines along the length.
Inventors
- 👤 H Brainin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:12
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/30; A61C8/00; A61C8/0018
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
17 words
A dental implant as claimed in claim 1 wherein the entire root section is said carbon material.
Claim 2
Dependent Claim
35 words
A dental implant as claimed in claim 1 wherein only the outer layer of the member is of carbon material, the remainder of the member being of a material other than the said carbon material.
Claim 3
Dependent Claim
34 words
A dental implant as claimed in claim 1 wherein the root section forms part of an artificial tooth which includes a crown section, and means for securing the crown section to the root section.
Claim 4
Dependent Claim
27 words
A dental implant as claimed in claim 1 wherein the member has at least one substantially cone-shaped projection which defines the surfaces for engagement with the alveolus.
Claim 5
Dependent Claim
35 words
A dental implant as claimed in claim 1 wherein more than one substantially cone-shaped projection is provided for supporting a crown section of the artificial tooth and defines the surfaces for engagement with the alveolus.
Claim 6
Dependent Claim
32 words
A dental implant as claimed in claim 1 wherein a plurality of longitudinally extending external carbon splines form part of the implant for aiding in permanently securing the root section in place.
Claim 7
Dependent Claim
31 words
A dental implant as claimed in claim 1 wherein the surface of the carbon material has a roughened surface, said roughened surface assisting in the attachment of the periodontal ligament thereto.
Claim 8
Dependent Claim
15 words
A dental implant as claimed in claim 1 wherein the carbon material is substantially impermeable.
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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |