US3673308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon wafer cell
Assignee: Licentia Patent Verwaltungs GmbH
•
Filing: 1971-04-28
•
Granted: 1972-06-27
•
Expires: 1991-04-28
Abstract
Abstract In a ceramic housing, a silicon wafer is held centered with respect to the housing by a flat tensioning ring having three protrusions on its inner periphery and three protrusions on its outer periphery, the three protrusions on the outer periphery being in contact with the inner wall of the housing, the three protrusions on the inner periphery being in contact with the outer edge surface of a carrier disc on which the wafer is securely mounted.
Inventors
- 👤 Heinz Juchmann
- 👤 Peter Lauterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138; H10W76/40
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
125 words
A wafer cell comprising a silicon wafer element having electrodes on its flat sides, a carrier disc, the wafer element secured on the carrier disc, a ceramic housing peripherally surrounding the wafer element, contact sheet means closing said housing and allowing pressure contacting to both of the flat sides of said wafer element, and means centering the wafer element within said housing without play, said centering means comprising a flat tensioning ring having three protrusions on its inner periphery and three protrusions on its outer periphery, head surfaces of the protrusions on the inner periphery fitting with force against an edge surface of said carrier disc, head surfaces of the protrusions on the outer periphery fitting with force against an inner wall of said housing.
Claim 2
Dependent Claim
125 words
A wafer cell comprising a silicon wafer element having electrodes on its flat sides, a carrier disc, the wafer element secured on the carrier disc, a ceramic housing peripherally surrounding the wafer element, contact sheet means closing said housing and allowing pressure contacting to both of the flat sides of said wafer element, and means centering the wafer element within said housing without play, said centering means comprising a flat tensioning ring having three protrusions on its inner periphery and three protrusions on its outer periphery, head surfaces of the protrusions on the inner periphery fitting with force against an edge surface of said carrier disc, head surfaces of the protrusions on the outer periphery fitting with force against an inner wall of said housing.
Claim 3
Dependent Claim
51 words
A wafer cell as claimed in claim 1, the protrusions on the inner periphery being separated from one another by 120*, the protrusions on the outer periphery being separated from one another by 120*, the protrusions of the inner periphery being shifted 60* relative to the protrusions of the outer periphery.
References Cited (Backward Citations)
US3499095A
Cited
US3539704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |