US3984914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral implant
Assignee: Individual
•
Filing: 1974-07-24
•
Granted: 1976-10-12
•
Expires: 1994-07-24
Abstract
Abstract Improved endosseous and subperiosteal dental implants are obtained by providing the lower substructure of such implants with an adherent coating or reservoir of a calcium compound.
Inventors
- 👤 Robert Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:50
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0012; A61K; A61K6/00; A61K6/80; A61K6/802; A61K6/84; A61K6/844; A61K6/849; A61K6/876
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
91 words
An improved dental implant comprising an implant element fabricated from a biologically inert material, said implant element having an upper abutment and an interconnected lower substructure that is adapted to be placed upon or inserted within the alveolar bone of the maxillae or mandible, said substructure being provided with a reservoir or adherent coating of a calcium compound selected from the group consisting of calcium hydroxide, calcium oxide, calcium alcoholate, calcium salts of aliphatic monocarboxylic acids, calcium salts of aliphatic hydroxymonocarboxylic acids, calcium salts of aliphatic hydroxypolycarboxylic acids and mixtures thereof.
Claim 2
Dependent Claim
91 words
An improved dental implant comprising an implant element fabricated from a biologically inert material, said implant element having an upper abutment and an interconnected lower substructure that is adapted to be placed upon or inserted within the alveolar bone of the maxillae or mandible, said substructure being provided with a reservoir or adherent coating of a calcium compound selected from the group consisting of calcium hydroxide, calcium oxide, calcium alcoholate, calcium salts of aliphatic monocarboxylic acids, calcium salts of aliphatic hydroxymonocarboxylic acids, calcium salts of aliphatic hydroxypolycarboxylic acids and mixtures thereof.
Claim 3
Dependent Claim
12 words
The implant of claim 1 wherein said calcium compound is calcium hydroxide.
Claim 4
Dependent Claim
18 words
The implant of claim 1 wherein said calcium compound is a calcium salt of an aliphatic monocarboxylic acid.
Claim 5
Dependent Claim
31 words
The implant of claim 1 wherein said calcium compound is a calcium alcoholate having the formula Ca(OR) 2 wherein R is an alkyl radical having from 1 to 6 carbon atoms.
Claim 6
Dependent Claim
13 words
The implant of claim 1 wherein said implant element is an endosseous implant.
Claim 7
Dependent Claim
19 words
The implant of claim 5 wherein said substructure is substantially completely covered with an adherent coating of calcium hydroxide.
Claim 8
Dependent Claim
16 words
The implant of claim 5 wherein said substructure is provided with a reservoir of calcium hydroxide.
Claim 9
Dependent Claim
35 words
The implant of claim 5 wherein said substructure is provided with a reservoir of a calcium alcoholate having the formula Ca(OR) 2 wherein R is an alkyl radical having from 1 to 6 carbon atoms.
Claim 10
Dependent Claim
17 words
The implant of claim 1 wherein said implant element is fabricated from a biologically inert metallic material.
Claim 11
Dependent Claim
17 words
The implant of claim 5 wherein said implant element is fabricated from a biologically inert metallic material.
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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |