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US3611060A Expired / Lapsed US ⏱️ 0.0 years remaining

Three terminal active glass memory element

Assignee: Texas Instruments Inc
•
Filing: 1969-11-17
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Granted: 1971-10-05
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Expires: 1989-11-17
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Abstract

Abstract Disclosed is a three terminal switching device using a nonoxide glass as the active elemental material therein. In one specific embodiment the switch includes a first nonoxide active glass film evaporated on a conductive base of aluminum. A conductive gold strip is formed over a portion of the first nonoxide glass film and a second nonoxide active glass film is formed partially over the gold strip and the first glass film. Electrical contacts are made to the conductive base, the conductive strip and the second nonoxide glass film. With a biasing voltage applied to the base contact and the film contact, a voltage pulse of proper polarity applied to the gold strip contact turns the device on, and while in this on condition, a voltage pulse of the opposite polarity turns the device off.

Inventors

  • 👤 Rowland E Johnson
  • 👤 Robert W Haisty

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 22:18
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H10; H10N; H10N70/00; H10N70/20; H10N70/253; H10N70/801; H10N70/881; H10N70/882; H10N70/8828

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 16 words
A memory device as recited in claim 1, wherein said alloy further contains silicon and germanium.
Claim 2
Dependent Claim 34 words
A memory device as recited in claim 2, wherein one of said glass layers consists essentially of 55 atomic percent Te, 38 atomic percent As, 4 atomic percent Ge, and 3 atomic percent Si.
Claim 3
Dependent Claim 17 words
A memory device as recited in claim 3, wherein both glass layers are of the aforementioned composition.
Claim 4
Dependent Claim 14 words
A memory device as recited in claim 3, wherein said conductive strip is gold.

References Cited (Backward Citations)

US3271591A Cited
US3436624A Cited
US3527962A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-10-04 1975-04-05 1975-10-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-04 1979-04-05 1979-10-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-04 1983-04-05 1983-10-05 $7700.00 Window Closed / Lapsed

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