IP Library › Granted Patent US 8,277,274
Granted Patent B2
US 8,277,274 · App. 12/453,066 · Granted Oct 2, 2012

Apparatus and methods for use of refractory abhesives in protection of metallic foils and leads

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Quick Facts
Patent No.
US 8,277,274
App. No.
12/453,066
Granted
Oct 2, 2012
Kind
B2
Abstract

A device having a quartz or glass body forming a chamber hermetically sealed by one or more pinch seals formed in the body wherein a metallic foil provides an electrical connection through a pinch seal. A method is provided for protecting a portion of the metallic foil from corrosion prior to forming the pinch seal by coating at least a portion of the foil with a film comprising silica, and applying a refractory abhesive to at least a portion of the film.

Claims (25)

1. In a device having a quartz or glass body forming a chamber hermetically sealed by one or more pinch or shrink seals formed in the body wherein a metallic foil provides an electrical connection through a pinch or shrink seal, a method of protecting at least a portion of the foil from corrosion comprising the steps performed prior to forming the pinch seal:

coating at least a portion of the foil with a film comprising silica; and

applying a refractory abhesive to at least a portion of the film, wherein the refractory abhesive resists adhesion to the quartz or glass body.

2. The method of claim 1 , wherein the portion of the foil includes a junction between the foil and an outer lead.

3. The method of claim 1 , wherein the portion of the foil is distal from an electrode lead.

4. The method of claim 1 , wherein the metallic foil is formed from molybdenum.

5. The method of claim 1 , wherein the refractory abhesive is selected from the group consisting of boron nitride, graphite, powders or flakes of refractory metals, and powders or flakes of refractory oxides.

6. The method of claim 5 , wherein the refractory abhesive comprises boron nitride.

7. The method of claim 5 , wherein the refractory abhesive comprises graphite.

8. The method of claim 5 , wherein the refractory abhesive comprises powders or flakes of refractory metals.

9. The method of claim 5 , wherein the refractory abhesive comprises powders or flakes of refractory oxides.

10. The method of claim 1 , wherein the film further comprises one or more metallic salts.

11. An electrical lead assembly comprising:

a metallic foil having one or more leads attached thereto;

a protective layer on at least a portion of said metallic foil, said protective layer comprising one or more fusible glass precursors;

a layer of material overlaying at least a portion of said protective layer, said material being suitable for preventing adhesion of the protective layer overlaid by the material to a quartz or glass body when said electrical lead assembly is sealed within a pinch or shrink seal in the body.

12. The electrical lead assembly of claim 11 , wherein said protective layer is on at least a junction between said metallic foil and an outer lead attached to said metallic foil.

13. The electrical lead assembly of claim 11 , wherein said protective layer is on at least a distal portion of said metallic foil relative to an electrode lead attached to said metallic foil.

14. The electrical lead assembly of claim 11 , wherein said metallic foil is formed from molybdenum.

15. The electrical lead assembly of claim 11 , wherein said material is selected from the group consisting of boron nitride, graphite, powders or flakes of refractory metals, and powders or flakes of refractory oxides.

16. The electrical lead assembly of claim 15 , wherein said material comprises boron nitride.

17. The electrical lead assembly of claim 15 , wherein said material comprises graphite.

18. The electrical lead assembly of claim 15 , wherein said material comprises powders or flakes of refractory metals.

19. The electrical lead assembly of claim 15 , wherein said material comprises powders or flakes of refractory oxides.

20. The electrical lead assembly of claim 11 , wherein said protective layer further comprises one or more metallic salts.

Assignments (10)
TERMINATION AND RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY Recorded Mar 18, 2021
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: EDSG, INC.; ADVANCED LIGHTING TECHNOLOGIES, LLC; ADLT FINANCE CO.; 9999 SALES, INC.; ADLT REALTY CORP. I, INC.; ADVANCED LIGHTING MATERIALS NORTH AMERICA, INC.; ADVANCED LIGHTING TECHNOLOGIES AUSTRALIA, INC.; APL ENGINEERED MATERIALS, INC.; EPIC DESIGN SERVICES GROUP, INC.; LIGHTING RESOURCES INTERNATIONAL, INC.; VENTURE LIGHTING INTERNATIONAL, INC.
Reel/Frame 056886/0441 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY Recorded Mar 18, 2021
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: ADVANCED LIGHTING TECHNOLOGIES, LLC; ADLT FINANCE CO.; 9999 SALES, INC.; ADLT REALTY CORP. I, INC.; ADVANCED LIGHTING MATERIALS NORTH AMERICA, INC.; ADVANCED LIGHTING TECHNOLOGIES AUSTRALIA, INC.; APL ENGINEERED MATERIALS, INC.; EDSG, INC.; EPIC DESIGN SERVICES GROUP, INC.; LIGHTING RESOURCES INTERNATIONAL, INC.; VENTURE LIGHTING INTERNATIONAL, INC.
Reel/Frame 056887/0364 →
RELEASE OF SECURITY INTEREST Recorded Mar 17, 2021
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: ADVANCED LIGHTING TECHNOLOGIES, LLC; VENTURE LIGHTING INTERNATIONAL, INC.; APL ENGINEERED MATERIALS, INC.
Reel/Frame 055632/0571 →
RELEASE OF SECURITY INTEREST Recorded Mar 17, 2021
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: ADVANCED LIGHTING TECHNOLOGIES, LLC; ADLT FINANCE CO.; 9999 SALES, INC.; ADLT REALTY CORP. I, INC.; ADVANCED LIGHTING MATERIALS NORTH AMERICA, INC.; ADVANCED LIGHTING TECHNOLOGIES AUSTRALIA, INC.; APL ENGINEERED MATERIALS, INC.; EDSG, INC.; EPIC DESIGN SERVICES GROUP, INC.; LIGHTING RESOURCES INTERNATIONAL, INC.; VENTURE LIGHTING INTERNATIONAL, INC.
Reel/Frame 055632/0550 →
RELEASE OF SECURITY INTEREST Recorded Mar 17, 2021
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: ADVANCED LIGHTING TECHNOLOGIES, LLC; ADLT FINANCE CO.; 9999 SALES, INC.; ADLT REALTY CORP. I, INC.; ADVANCED LIGHTING MATERIALS NORTH AMERICA, INC.; ADVANCED LIGHTING TECHNOLOGIES AUSTRALIA, INC.; APL ENGINEERED MATERIALS, INC.; EDSG, INC.; EPIC DESIGN SERVICES GROUP, INC.; LIGHTING RESOURCES INTERNATIONAL, INC.; VENTURE LIGHTING INTERNATIONAL, INC.
Reel/Frame 055632/0332 →
SECURITY INTEREST Recorded Dec 22, 2017
From: ADVANCED LIGHTING TECHNOLOGIES, LLC; APL ENGINEERED MATERIALS, INC.; VENTURE LIGHTING INTERNATIONAL, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 044949/0179 →
SECURITY INTEREST Recorded Oct 6, 2017
From: ADVANCED LIGHTING TECHNOLOGIES, LLC; ADLT FINANCE CO.; 9999 SALES, INC.; ADLT REALTY CORP. I, INC.; ADVANCED LIGHTING MATERIALS NORTH AMERICA, INC.; ADVANCED LIGHTING TECHNOLOGIES AUSTRALIA, INC.; APL ENGINEERED MATERIALS, INC.; EDSG, INC.; EPIC DESIGN SERVICES GROUP, INC.; LIGHTING RESOURCES INTERNATIONAL, INC.; VENTURE LIGHTING INTERNATIONAL, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 044144/0466 →
SECURITY INTEREST Recorded Oct 5, 2017
From: ADVANCED LIGHTING TECHNOLOGIES, LLC; VENTURE LIGHTING INTERNATIONAL, INC.; 9999 SALES, INC.; ADLT FINANCE CO.; ADLT REALTY CORP. I, INC.; ADVANCED LIGHTING MATERIALS NORTH AMERICA, INC.; ADVANCED LIGHTING TECHNOLOGIES AUSTRALIA, INC.; APL ENGINEERED MATERIALS, INC.; EDSG, INC.; EPIC DESIGN SERVICES GROUP, INC.; LIGHTING RESOURCES INTERNATIONAL, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 044213/0227 →
SECURITY AGREEMENT Recorded Jun 14, 2012
From: ADVANCED LIGHTING TECHNOLOGIES, INC.; DEPOSITION SCIENCES, INC.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
Reel/Frame 028372/0627 →
SECURITY AGREEMENT Recorded Jun 4, 2012
From: ADVANCED LIGHTING TECHNOLOGIES, INC.; VENTURE LIGHTING INTERNATIONAL, INC.; DEPOSITION SCIENCES, INC.; APL ENGINEERED MATERIALS, INC.; 9999 SALES, INC.; ADVANCED LIGHTING MATERIALS NORTH AMERICA, INC.; LIGHTING RESOURCES INTERNATIONAL, INC.; EPIC DESIGN SERVICES GROUP, INC.; EDSG, INC; ADVANCED LIGHTING TECHNOLOGIES AUSTRALIA, INC.; ADLT REALTY CORP. I, INC.
To: U.S. BANK NATIONAL ASSOCIATION
Reel/Frame 028314/0345 →