US3690325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable electric device
Assignee: Devices Ltd
•
Filing: 1970-11-02
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Granted: 1972-09-12
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Expires: 1990-11-02
Abstract
Abstract An implantable electric device which has at least one electric cell, a casing of epoxy resin encapsulating the electric cell, and a thin barrier layer of metal covering the casing, which layer is permeable to gas and relatively impermeable to liquid.
Inventors
- 👤 John Kenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:55
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61N1/375; A61N1/37512
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
16 words
An implantable electric device as claimed in claim 1 wherein the barrier layer is of palladium.
Claim 2
Dependent Claim
16 words
An implantable electric device as claimed in claim 2 wherein the palladium layer is vapor deposited.
Claim 3
Dependent Claim
20 words
An implantable electric device as claimed in claim 3 wherein the thickness of the palladium layer is approximately 5 microns.
Claim 4
Dependent Claim
22 words
An implantable electric device as claimed in claim 2 wherein the palladium layer is deposited electrolessly after suitable preparation of the casing.
Claim 5
Dependent Claim
20 words
An implantable electric device as claimed in claim 5 wherein the thickness of the palladium layer is approximately 2 microns.
Claim 6
Dependent Claim
23 words
An implantable electric device as claimed in claim 2 wherein the palladium layer is deposited by electroplating after suitable preparation of the casing.
Claim 7
Dependent Claim
20 words
An implantable electric device as claimed in claim 7 wherein the thickness of the palladium layer is approximately 2 microns.
Claim 8
Dependent Claim
36 words
An implantable electric device as claimed in claim 1 wherein the barrier layer is of aluminum and a further protective layer of silicone rubber or epoxy resin or the like is provided over the barrier layer.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |