Patent US4804086A successfully refreshed from Google Patents.
US4804086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport container with an interchangeable inside container
Assignee: Siemens AG
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Filing: 1987-12-16
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Granted: 1989-02-14
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Expires: 2007-12-16
Abstract
Abstract A transport container with an interchangeable, bipartite inside container includes an outside hood, an outside bottom plate, an inside hood, an inside bottom plate, two closing levers, a sealing element and a semiconductor holder. A filter element is built into the container to provide a particle-type transportation container for transporting and storing semiconductor wafers in a semiconductor wafer cassette and for use in differing air pressure conditions and air purity conditions.
Inventors
- 👤 Peter Grohrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:05
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/10; H10P72/19; H10P72/1911; H10P72/1912; H10P72/1916; H10P72/1922; H10P72/1924; H10P72/1926; Y; Y10; Y10S; Y10S414/00; Y10S414/135; Y10S414/139; Y10S414/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
85 words
A transport container for transporting and storing semiconductor wafers in a semiconductor wafer cassette, comprising: an outside hood; an outside bottom plate; an inside hood; an inside bottom plate that forms a closed inside container with said inside hood; first and second closing levers for non-positive closing of said outside hood with said outside bottom plate; a sealing element for air-tight closure of said transport container; and an interchangeable semiconductor wafer holder secured to said inside hood and hingedly moveable relative to said transporting container.
Claim 2
Dependent Claim
85 words
A transport container for transporting and storing semiconductor wafers in a semiconductor wafer cassette, comprising: an outside hood; an outside bottom plate; an inside hood; an inside bottom plate that forms a closed inside container with said inside hood; first and second closing levers for non-positive closing of said outside hood with said outside bottom plate; a sealing element for air-tight closure of said transport container; and an interchangeable semiconductor wafer holder secured to said inside hood and hingedly moveable relative to said transporting container.
Claim 3
Dependent Claim
31 words
A transporting container as claimed in claim 1, further comprising: a filter provided in said inside bottom plate to provide a particle-free air stream into said transport container during pressure fluctuations.
Claim 4
Dependent Claim
24 words
A transport container as claimed in claim 1, further comprising: four L-shaped elevations on said inside bottom plate for receiving the semiconductor wafer cassette.
Claim 5
Dependent Claim
28 words
A transport container as claimed in claim 1, wherein said inside bottom plate includes a U-shaped edge extending about said inside bottom plate for accepting said sealing element.
Claim 6
Dependent Claim
29 words
A transport container as claimed in claim 1, further comprising: first and second inwardly directed nubs extending from said inside hood to which the semiconductor wafer holder is secured.
Claim 7
Dependent Claim
25 words
A transport container as claimed in claim 1, further comprising: outwardly direct nubs extending from said inside hood to which said outside hood is secured.
Claim 8
Dependent Claim
23 words
A transport container as claimed in claim 1, further comprising: an outwardly directed centering ring provided in a center of said inside hood.
Claim 9
Dependent Claim
19 words
A transport container as claimed in claim 1, wherein said outside hood includes depressions for securing said closing lever.
Claim 10
Dependent Claim
19 words
A transport container as claimed in claim 1, wherein said sealing element is of silicone rubber and polyethylene film.
Claim 11
Dependent Claim
34 words
A transport container as claimed in claim 9, wherein said silicone rubber sealing element has a material hardness of about 5 degrees Shore and said polyethylene film has a thickness of about 0.1 mm.
Claim 12
Dependent Claim
130 words
A transport container as claimed in claim 1, wherein said interchangeable semiconductor wafer holder includes: first and second lateral longitudinal webs; a reinforced center web; a third narrow web connected by a first film hinge to said center web extending in an upward direction; a perpendicularly disposed fourth web connected to said third narrow web by a second film hinge, said fourth web including first and second depressions for fastening to said inside hood; fifth and sixth webs connected to said center web extending by respective film hinges in a downward direction; a seventh web connected in a middle of said center web; and a spacer disposed at a lower region of said semiconductor wafer holder to provide a space between said inside bottom plate and said semiconductor wafer holder.
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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) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |