IP Library Granted Patent US 8,440,060
Granted Patent B2
US 8,440,060 · App. 12/181,541 · Granted May 14, 2013

High surface area electrode coating

Inventor: Dao Min Zhou (Saugus, CA)
Assignee: Second Sight Medical Products, Inc.
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Quick Facts
Patent No.
US 8,440,060
App. No.
12/181,541
Granted
May 14, 2013
Kind
B2
Abstract

An electrode surface coating for manufacturing the electrode surface coating comprising a conductive substrate; and one or more surface coatings comprising one or more of the following metals titanium, niobium, tantalum, ruthenium, rhodium, iridium, palladium, or gold, or an alloy of two or more metals, or a combination of two or more alloys or metal layers thereof having an increase in the surface area of 5 times to 500 times of the corresponding surface area resulting from the basic geometric shape.

Claims (12)

1. An electrode with a surface coating, consisting of: a conductive substrate; said electrode coating is one or more of the following metals niobium, tantalum, ruthenium, rhodium, iridium, gold, an alloy of two or more of the metals, or a combination of two or more of the alloys or of the metal layers having an increase in the surface area of 5 times to 500 times the corresponding surface area resulting from the basic geometric shape; and said surface coating has a thickness of 0.01 micrometers to 10 micrometers wherein the relation of surface area to the thickness of said surface coating is of 1.0 F/cm3 to 6.0 F/cm3.

2. The electrode with a surface coating of claim 1 wherein the relation of surface area to the thickness of said surface coating is of 1.8 F/cm3 to 5.6 F/cm3.

3. The electrode with a surface coating of claim 1 wherein said conductive substrate is one or more of the following metals titanium, zirconium, niobium, tantalum, tungsten, rhenium, ruthenium, rhodium, iridium, gold, or carbon.

4. The electrode with a surface coating of claim 1 wherein said conductive substrate is gold, iridium, iridium oxide, rhodium, tantalum, titanium, titanium nitride, or niobium.

5. The electrode with a surface coating of claim 1 wherein said surface coating is biocompatible.

6. The electrode with a surface coating of claim 1 wherein said surface coating does not contain lead.

7. An electrode with a surface coating, consisting of: a conductive substrate; said surface coating consisting of one or more of the following metals titanium, niobium, tantalum, ruthenium, rhodium, iridium, gold, an alloy of two or more of the metals, and a combination of two or more of the alloys or of the metal layers thereof having an increase in the surface area of 5 times to 500 times of the corresponding surface area resulting from the basic geometric shape; and said surface coating has an adhesive strength as measured by critical load greater than 35 mN.

8. The electrode with a surface coating of claim 7 wherein the relation of surface area to the thickness of said surface coating is of 1.8 F/cm3 to 5.6 F/cm3.

9. The electrode with a surface coating of claim 7 wherein said conductive substrate is one or more of the following metals titanium, zirconium, niobium, tantalum, tungsten, rhenium, ruthenium, rhodium, iridium, gold, or carbon.

10. The electrode with a surface coating of claim 7 wherein said conductive substrate is gold, iridium, iridium oxide, rhodium, tantalum, titanium nitride, or niobium.

11. The electrode with a surface coating of claim 7 wherein said surface coating is biocompatible.

12. The electrode with a surface coating of claim 7 wherein said surface coating does not contain lead.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 3, 2023
From: VIVANI MEDICAL, INC.
To: CORTIGENT, INC.
Reel/Frame 062589/0167 →
MERGER AND CHANGE OF NAME Recorded Dec 27, 2022
From: SECOND SIGHT MEDICAL PRODUCTS, INC.; VIVANI MEDICAL, INC.
To: VIVANI MEDICAL, INC.
Reel/Frame 062230/0442 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 14, 2008
From: ZHOU, DAO MIN
To: SECOND SIGHT MEDICAL PRODUCTS, INC.
Reel/Frame 021393/0821 →
Continuity (2)
Division 11259823 · Oct 26, 2005
Related Publication 20080314753A1 · Dec 25, 2008