US4331258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing cover for an hermetically sealed container
Assignee: Raychem Corp
•
Filing: 1981-03-05
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Granted: 1982-05-25
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Expires: 2001-03-05
Abstract
Abstract A sealing cover for an hermetically sealed container comprises an environmentally resistant metal lid, an intermediate plated metallic "picture frame", and a solder deposit metallurgically bonded to that "frame". Such a cover is particularly adapted for the sealing of semiconductor packages, and is especially advantageous in that it need not employ precious metals.
Inventors
- 👤 Gary I. Geschwind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:35
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/15; H10W76/157; H10W76/60; H10W70/00; H10W70/60; H10W70/67; H10W70/68; H10W70/682; H10W72/00; H10W72/071; H10W72/075; H10W72/90; H10W72/951; H10W72/952; H10W90/00; H10W90/701; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
A sealing cover for hermetically sealing a container, comprising: (a) an environmentally resistant metallic lid; (b) an intermediate layer comprising metal plating on only that part of the surface of said lid which is to be rendered solderable; and (c) a layer of solder disposed on said intermediate layer and metallurgically bonded thereto.
Claim 2
Dependent Claim
53 words
A sealing cover for hermetically sealing a container, comprising: (a) an environmentally resistant metallic lid; (b) an intermediate layer comprising metal plating on only that part of the surface of said lid which is to be rendered solderable; and (c) a layer of solder disposed on said intermediate layer and metallurgically bonded thereto.
Claim 3
Dependent Claim
38 words
A sealing cover as in claim 1 wherein the metal comprising said lid is selected from the group consisting of nickel-titanium alloys, titanium alloys, tantalum alloys, niobium alloys, molybdenum alloys, tungsten alloys, nickel, and 300 series stainless steels.
Claim 4
Dependent Claim
17 words
A sealing cover as in claim 2 wherein the metal comprising said lid is a nickel-titanium alloy.
Claim 5
Dependent Claim
14 words
A sealing cover as in claim 1 wherein the intermediate layer comprises nickel plating.
Claim 6
Dependent Claim
16 words
A sealing cover as in claim 1 wherein the solder comprises a predominantly non-precious metal alloy.
Claim 7
Dependent Claim
15 words
A sealing cover as in claim 5 wherein the solder comprises a predominantly tin-lead alloy.
Claim 8
Dependent Claim
31 words
A sealing cover as in claim 1 wherein the intermediate layer and solder layer lie on a picture frame about the circumference of one side and the edges of the lid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |