US3628248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming artificial implants
Assignee: Dentsply Sirona Inc
•
Filing: 1969-07-22
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Granted: 1971-12-21
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Expires: 1989-07-22
Abstract
Abstract Process for forming artificial implants for replacement of vertebrate animal hard tissue elements and parts thereof and formed from synthetic resin, without preparation prior to surgery. The process includes removal of the animal tissue element or part to be replaced, investing it in quick-setting elastomeric material to form a mold cavity of the same, forming a synthetic resin reproduction of said element or part from said mold, and removing said reproduced element or part from the mold for introduction into a natural animal body, from which the original element was removed, for attachment of natural tissues thereto by natural growth.
Inventors
- 👤 Ernest A Kroder
- 👤 John F Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:10
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0036; A61C13/00; A61C13/0003; A61K; A61K6/00; A61K6/50; A61K6/58; A61K6/70; A61K6/71; A61K6/74; A61K6/75; A61K6/77; A61C13/20; A61C13/206
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
25 words
The process according to claim 1 in which the step of filling said mold with a synthetic resin comprises injecting said resin into said mold.
Claim 2
Dependent Claim
33 words
The process according to claim 1 in which the step of filling said mold comprises placing a mixture of liquid and powder resin components in said mold and permitting the same to self-cure.
Claim 3
Dependent Claim
16 words
The process according to claim 3 in which said resin is of a cross-linked thermosetting nature.
Claim 4
Dependent Claim
48 words
The process according to claim 1 in which said selected hard tissue element comprises a natural tooth and the removing of the same from the animal body comprises extracting said tooth, said process including the additional step of debriding said tooth prior to forming a negative mold thereof.
Claim 5
Dependent Claim
44 words
The process according to claim 5 including the further step of separating the crown portion of said extracted tooth from the root portion thereof and forming a negative mold of said root portion per se to form an artificial implant for an artificial crown.
Claim 6
Dependent Claim
38 words
The process according to claim 6 including the further step of forming a crown preparation on the end of the implant opposite the root portion thereof, such formation of the crown preparation occurring incident to molding the implant.
Claim 7
Dependent Claim
29 words
The process according to claim 6 including the further step of introducing a reinforcing member in the implant prior to the curing of the resin which forms the implant.
Claim 8
Dependent Claim
12 words
An artificial tooth implant injection molded by the method of claim 1.
References Cited (Backward Citations)
US2210424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |