US4284481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a metallic hermetic sealing cover for a container
Assignee: SEMI-ALLOYS Co
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Filing: 1980-04-24
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Granted: 1981-08-18
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Expires: 2000-04-24
Abstract
Abstract A method of fabricating a metallic hermetic sealing cover for a container comprises plating a strip of base metal with a material comprising preponderantly a precious metal such as gold to a thickness of 40% to 90% of the ultimate required minimum surface thickness, which may be 25 to 100 microinches, preferably about 40 microinches, dividing the strip into cover elements of predetermined size, and barrel-plating such cover elements with the plating material to provide a resultant minimum thickness of surface plating substantially equal to the required miniumum thickness.
Inventors
- 👤 Norman Hascoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:50
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/10; H; H10; H10W; H10W76/00; H10W76/01; H10W76/10; H10W76/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
The method of fabricating a metallic hermetic sealing cover for a container comprising: plating a strip of base metal with a material comprising preponderantly a precious metal to a fraction of the ultimate required minimum surface plating thickness; dividing said strip into cover elements of predetermined size; and plating said cover elements with said material to provide a resultant minimum thickness of surface plating substantially equal to the required minimum thickness.
Claim 2
Independent Claim
71 words
The method of fabricating a metallic hermetic sealing cover for a container comprising: plating a strip of base metal with a material comprising preponderantly a precious metal to a fraction of the ultimate required minimum surface plating thickness; dividing said strip into cover elements of predetermined size; and plating said cover elements with said material to provide a resultant minimum thickness of surface plating substantially equal to the required minimum thickness.
Claim 3
Dependent Claim
21 words
The method of fabricating a metallic hermetic sealing cover in accordance with claim 1 in which the plating material is gold.
Claim 4
Dependent Claim
36 words
The method of fabricating a metallic hermetic sealing cover in accordance with claim 1 in which the base metal strip is plated to a thickness of 40% to 90% of the ultimate required minimum plating thickness.
Claim 5
Dependent Claim
30 words
The method of fabricating a metallic hermetic sealing cover in accordance with claim 1 in which the required minimum surface plating is within the range of 25 to 100 microinches.
Claim 6
Dependent Claim
25 words
The method of fabricating a metallic hermetic sealing cover in accordance with claim 1 in which the plating of said cover elements is by barrel-plating.
References Cited (Backward Citations)
US3472753A
Cited
US3498902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |