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US4804086A Expired / Lapsed US ⏱️ 0.0 years remaining

Transport container with an interchangeable inside container

Assignee: Siemens AG
•
Filing: 1987-12-16
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Granted: 1989-02-14
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Expires: 2007-12-16
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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 04:47
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.

References Cited (Backward Citations)

US4228902A Cited
US4358908A Cited
US4682927A Cited
US4668484A Cited
US4520934A Cited
WO1986000870A1 Cited
US4609103A Cited
US4618071A Cited
US4724874A Cited

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

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