US4437479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decontamination apparatus for semiconductor wafer handling equipment
Assignee: TECHNOMEX DEVELOPMENT Ltd A PARTNERSHIP OF CA
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Filing: 1981-12-30
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Granted: 1984-03-20
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Expires: 2001-12-30
Abstract
Abstract Apparatus for decontaminating certain types of semiconductor wafer handling equipment is disclosed. The apparatus includes a frame having structure for applying decontaminating and electrostatic elimination fluid to handling equipment. It includes a first chamber and a second chamber. The first chamber removes contaminants from handling equipment and restricts the removed contaminants to the first chamber. The second chamber includes structure for drying handling equipment. The apparatus further includes structure for removing static from dried handling equipment.
Inventors
- 👤 Juan Bardina
- 👤 Mikel Gonzalez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:01
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/02; B08B3/022; H; H05; H05F; H05F3/00; Y; Y10; Y10S; Y10S134/00; Y10S134/902
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
A device for decontaminating semiconductor wafer handling equipment, comprising: a first chamber adapted to receive semiconductor wafer handling equipment, the first chamber including, an activatible means for applying decontamination liquid to handling equipment in the first chamber; means for restricting contaminants from handling equipment to the first chamber, which means includes a generally leakproof first door covering an opening into said chamber; and means for draining decontamination liquid from the first chamber; means for opening said first door to allow handling equipment to be loaded and unloaded into said first chamber; and a second chamber adapted for receiving handling equipment from said first chamber, the second chamber including means for directing a drying fluid to handling equipment therein.
Claim 2
Independent Claim
118 words
A device for decontaminating semiconductor wafer handling equipment, comprising: a first chamber adapted to receive semiconductor wafer handling equipment, the first chamber including, an activatible means for applying decontamination liquid to handling equipment in the first chamber; means for restricting contaminants from handling equipment to the first chamber, which means includes a generally leakproof first door covering an opening into said chamber; and means for draining decontamination liquid from the first chamber; means for opening said first door to allow handling equipment to be loaded and unloaded into said first chamber; and a second chamber adapted for receiving handling equipment from said first chamber, the second chamber including means for directing a drying fluid to handling equipment therein.
Claim 3
Dependent Claim
51 words
A device as set forth in claim 1 wherein the second chamber is a normally sealed chamber having a generally leak proof door means for opening the chamber to allow handling equipment to be loaded and unloaded therein, thereby providing means for deterring handling equipment contaminants from entering the second chamber.
Claim 4
Dependent Claim
22 words
A device as set forth in claim 1 wherein the device includes means for applying electrostatic elimination fluid to dry handling equipment.
Claim 5
Dependent Claim
64 words
A device as set forth in claim 1 wherein: said chambers including door means between them which opens for selective communication between the chambers; activatible transport means for moving handling equipment from the first chamber to the second chamber; and control means for synchronizing the movement of handling equipment with the opening of the door means and for activating each means for applying fluid.
Claim 6
Dependent Claim
122 words
A device as set forth in claim 4 wherein the device includes: loading means for automatically loading handling equipment into the first chamber; the first chamber having second door means which opens for selectively communicating with the loading means; unloading means for automatically unloading the second chamber and storing decontaminated handling equipment; the second chamber having second door means which opens for selectively communicating with the unloading means; the transport means additionally moving handling equipment from the loading means to the first chamber and moving handling equipment from the second chamber to the unloading means; and the control means additionally synchronizing the movement of handling equipment between the chambers and loading and unloading means with the opening of the respective door means.
Claim 7
Dependent Claim
35 words
The device as set forth in claim 4 or 5 wherein the device includes means for applying electrostatic elimination fluid to dry handling equipment positioned on the frame adjacent the second chamber second door means.
Claim 8
Dependent Claim
20 words
A device as set forth in claim 6 wherein the electrostatic elimination fluid applied to dry handling equipment is nitrogen.
Claim 9
Independent Claim
64 words
A device as set forth in any of claims 1, 2, 3, 4, or 5 wherein each means for applying fluid is spray means that includes at least two sets of nozzle means, at least one set of nozzle means positioned to be above handling equipment to be cleaned and at least one set of nozzle means positioned to be below such handling equipment.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |