Patent US3586926A successfully refreshed from Google Patents.
US3586926A
Expired / Lapsed
US
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Hermetically sealed semiconductor device with absorptive agent
Assignee: NEC Corp
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Filing: 1968-11-27
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Granted: 1971-06-22
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Expires: 1988-11-27
Abstract
Abstract A hermetically sealed semiconductor device is described. Within a hermetically sealed container an anhydrous organic salt is placed to form a strong adsorbent agent for the adsorption of water and other undesired substances. Copper sulfate is a preferred organic salt from which the water of crystallization has been removed before the sealing of the container.
Inventors
- 👤 Yoshiaki Nakamura
- 👤 Kazuhiko Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:06
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/40; H10W76/42; H10W76/48; H10W72/00; H10W72/50; H10W72/541; H10W72/5449; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
The device as recited in claim 2 wherein said container is formed of a ceramic material bonded to said anhydrous inorganic salt.
Claim 2
Dependent Claim
40 words
The device as recited in claim 2 and further including a ceramic porous material placed within the container with the semiconductor element, and wherein said organic salt in its anhydrous state is permeated throughout pores of said ceramic porous material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |