US4687242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for handling semiconductor wafers during fabrication of integrated circuits
Assignee: Individual
•
Filing: 1985-05-17
•
Granted: 1987-08-18
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Expires: 2005-05-17
Abstract
Abstract A semi-conductor wafer handling apparatus for use during fabrication of semi-conductor wafers, made of alumina and having a relieved flat face connected to a source of air pressure differential.
Inventors
- 👤 Dick Van Rooy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:57
CPC Classifications
B; B25; B25B; B25B11/00; B25B11/005; B25B11/007; H; H10; H10P; H10P72/00; H10P72/70; H10P72/78
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
A semiconductor wafer handling apparatus comprising: a body member, made of molded alumina, said body member having; a first planar surface with a relief in said surface; a second planar surface parallel to the first planar surface, a rear planar surface at substantially right angles to said first and second planar surface forming a rear surface of the body member; a third planar surface angled at a sharp acute angle compared to the first surface and forming a first intersection with said second planar surface, the first intersection parallel to said rear surface and; a fourth planar surface angled at a less sharp acute angle compared to the first surface forming a second intersection with said third planar surface, the second intersection parallel to said rear surface, said fourth surface additionally forming a third intersection with said first surface, the third intersection parallel to said rear surface; and means for connecting said relief to means for generating air pressure differential.
Claim 2
Dependent Claim
160 words
A semiconductor wafer handling apparatus comprising: a body member, made of molded alumina, said body member having; a first planar surface with a relief in said surface; a second planar surface parallel to the first planar surface, a rear planar surface at substantially right angles to said first and second planar surface forming a rear surface of the body member; a third planar surface angled at a sharp acute angle compared to the first surface and forming a first intersection with said second planar surface, the first intersection parallel to said rear surface and; a fourth planar surface angled at a less sharp acute angle compared to the first surface forming a second intersection with said third planar surface, the second intersection parallel to said rear surface, said fourth surface additionally forming a third intersection with said first surface, the third intersection parallel to said rear surface; and means for connecting said relief to means for generating air pressure differential.
Claim 3
Dependent Claim
27 words
The handling apparatus of claim 1 wherein said body member includes at least one air passageway between said relief and a rear surface of the body member.
Claim 4
Dependent Claim
29 words
The handling apparatus of claim 1 including a hollow rod, having a first end and a second end, and having said first end disposed in said means for connecting.
Claim 5
Dependent Claim
16 words
The handling apparatus of claim 3 wherein said rod is bonded to said means for connecting.
Claim 6
Dependent Claim
25 words
The handling apparatus of claim 3 wherein said second end is disposed in a manipulable handle suitable for human hands to comfortably grasp and move.
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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) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |