Patent US4886162A successfully refreshed from Google Patents.
US4886162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container for vacuum storing and/or shipping silicon wafers
Assignee: STMicroelectronics SRL
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Filing: 1988-02-02
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Granted: 1989-12-12
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Expires: 2008-02-02
Abstract
Abstract A container specifically designed for vacumm holding and shipping a silicon wafer, is provided with two circular portions having circumferentially, on bulged top and lower faces outer rasied edges and, within the top face of the circular portion forming the bottom portion of the assembled container, an inner edge.
Inventors
- 👤 Sala Ambrogio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:30
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/10; H10P72/19; H10P72/1902; B; B65; B65D; B65D81/00; B65D81/18; B65D81/20; B65D81/2007; B65D81/2015; H10P72/1922
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
A container designed for vacuum holding and transporting a silicon wafer, the container comprising: an upper circular portion having an outwardly bulged upper face, the upper circular portion having an outer raised edge near the periphery thereof, a lower circular portion having a circumference which is substantially the same as that of the other circular portion, the lower circular portion having an outwardly bulged lower face, the lower circular portion further comprising an outer raised edge near the periphery thereof and an inner raised edge of lesser height than the outer raised edge, and an opening comprising a break in the inner and outer raised edges of the lower circular portion, the upper and lower circular portions being adapted to form the closed container with the outer raised edge of the upper circular portion being substantially radially adjacent the inner raised edge of the lower circular portion, the edge of the wafer being located in use between said outer and inner raised edge of the upper and lower circular portion respectively.
Claim 2
Dependent Claim
171 words
A container designed for vacuum holding and transporting a silicon wafer, the container comprising: an upper circular portion having an outwardly bulged upper face, the upper circular portion having an outer raised edge near the periphery thereof, a lower circular portion having a circumference which is substantially the same as that of the other circular portion, the lower circular portion having an outwardly bulged lower face, the lower circular portion further comprising an outer raised edge near the periphery thereof and an inner raised edge of lesser height than the outer raised edge, and an opening comprising a break in the inner and outer raised edges of the lower circular portion, the upper and lower circular portions being adapted to form the closed container with the outer raised edge of the upper circular portion being substantially radially adjacent the inner raised edge of the lower circular portion, the edge of the wafer being located in use between said outer and inner raised edge of the upper and lower circular portion respectively.
Claim 3
Dependent Claim
31 words
A container as contained in claim 1 wherein the outer raised edge of the upper circular portion of a lesser height than the outer raised edge of the lower circular portion.
Claim 4
Dependent Claim
31 words
A container as claimed in claim 1 wherein the outer raised edge of the upper circular portion has a smaller diameter than the outer raised edge of the lower circular portion.
Claim 5
Dependent Claim
35 words
A container as claimed in claim 1 wherein the inner edge of the lower circular portion is of lesser height than the outer edge thereof, the inner and outer edges being directly adjacent each other.
Claim 6
Dependent Claim
33 words
A container as claimed in claim 1, the container being located in an outer packaging, whereby evacuation of air from the packaging results in the concomitant vacuuming of the container through the opening.
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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) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |