Patent US2736847A successfully refreshed from Google Patents.
← Back to Patent Explorer
US2736847A Expired / Lapsed US ⏱️ 0.0 years remaining

Fused-junction silicon diodes

Assignee: Raytheon Co
•
Filing: 1954-05-10
•
Granted: 1956-02-28
•
Expires: 1974-05-10
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Sanford H Barnes

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 10:01
CPC Classifications
H; H10; H10W; H10W72/00; H10P; H10P95/00; H10W76/00; H10W76/10; H10W76/12; H10W76/161; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/5524; Y; Y10; Y10S; Y10S148/00; Y10S148/062

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 244 words
A FUSED-JUNCTION SILICON DIODE COMPRISING: A SILICON CRYSTAL ELEMENT HAVING AN ACCEPTOR-IMPURITY-DOPED P-TYPE REGION, AN ANTIMONY-DOPED N-TYPE REGION SEPARATED FROM SAID P-TYPE REGION BY A RECTIFYING BARRIER, A LAYER OF ALUMINUM DEPOSITED ON SAID P-TYPE REGION AND IN OHMIC CONTACT THEREWITH, A LAYER OF GOLD DEPOSITED ON SAID LAYER OF ALUMINUM, SAID GOLD LAYER BLENDING WITH SAID ALUMINUM LAYER, AND AN ALLOY BUTTON FUSED TO SAID N-TYPE REGION AND IN OHMIC CONTACT THEREWITH, SAID ALLOY BUTTON INCLUDING SILICON, ANTIMONY, AND GOLD; A FIRST METALLIC ELECTRODE FOR SUPPORTING SAID CRYSTAL ELEMENT, SAID FIRST ELECTRODE HAVING FIRST AND SECOND ENDS; AN INSULATIVE BINDER MECHANICALLY INTERCONNECTING SAID GOLD LAYER WITH SAID FIRST END OF SAID FIRST ELECTRODE, SAID BINDER HAVING GOLD PARTICLES DISPERSED THEREIN TO PROVIDE AN OHMIC CONNECTION BETWEEN SAID FIRST ELECTRODE AND SAID P-TYPE REGION; A VITREOUS TUBULAR ENVELOPE FOR ENCLOSING SAID CRYSTAL ELEMENT, SAID ENVELOPE HAVING FIRST AND SECOND APERTURED ENDS, SAID FIRST ELECTRODE EXTENDING THROUGH THE APERTURE IN SAID FIRST END OF SAID VITREOUS ENVELOPE AND BEING HERMETICALLY SEALED THERETO WHEREBY SAID CRYSTAL ELEMENT IS POSITIONED WITHIN SAID ENVELOPE; A SECOND METALLIC ELECTRODE HAVING FIRST AND SECOND ENDS, SAID SECOND ELECTRODE EXTENDING THROUGH THE APERTURE IN SAID SECOND END OF SAID VITREOUS ENVELOPE AND BEING HERMETICALLY SEALED THERETO WHEREBY THE FIRST END OF SAID SECOND ELECTRODE EXTENDS WITHIN SAID ENVELOPE; AND A RESILIENT METALLIC ELEMENT POSITIONED WITHIN SAID ENVELOPE AND ELECTRICALLY INTERCONNECTING SAID FIRST END OF SAID SECOND ELECTRODE AND SAID ALLOY BUTTON.
Claim 2
Dependent Claim 244 words
A FUSED-JUNCTION SILICON DIODE COMPRISING: A SILICON CRYSTAL ELEMENT HAVING AN ACCEPTOR-IMPURITY-DOPED P-TYPE REGION, AN ANTIMONY-DOPED N-TYPE REGION SEPARATED FROM SAID P-TYPE REGION BY A RECTIFYING BARRIER, A LAYER OF ALUMINUM DEPOSITED ON SAID P-TYPE REGION AND IN OHMIC CONTACT THEREWITH, A LAYER OF GOLD DEPOSITED ON SAID LAYER OF ALUMINUM, SAID GOLD LAYER BLENDING WITH SAID ALUMINUM LAYER, AND AN ALLOY BUTTON FUSED TO SAID N-TYPE REGION AND IN OHMIC CONTACT THEREWITH, SAID ALLOY BUTTON INCLUDING SILICON, ANTIMONY, AND GOLD; A FIRST METALLIC ELECTRODE FOR SUPPORTING SAID CRYSTAL ELEMENT, SAID FIRST ELECTRODE HAVING FIRST AND SECOND ENDS; AN INSULATIVE BINDER MECHANICALLY INTERCONNECTING SAID GOLD LAYER WITH SAID FIRST END OF SAID FIRST ELECTRODE, SAID BINDER HAVING GOLD PARTICLES DISPERSED THEREIN TO PROVIDE AN OHMIC CONNECTION BETWEEN SAID FIRST ELECTRODE AND SAID P-TYPE REGION; A VITREOUS TUBULAR ENVELOPE FOR ENCLOSING SAID CRYSTAL ELEMENT, SAID ENVELOPE HAVING FIRST AND SECOND APERTURED ENDS, SAID FIRST ELECTRODE EXTENDING THROUGH THE APERTURE IN SAID FIRST END OF SAID VITREOUS ENVELOPE AND BEING HERMETICALLY SEALED THERETO WHEREBY SAID CRYSTAL ELEMENT IS POSITIONED WITHIN SAID ENVELOPE; A SECOND METALLIC ELECTRODE HAVING FIRST AND SECOND ENDS, SAID SECOND ELECTRODE EXTENDING THROUGH THE APERTURE IN SAID SECOND END OF SAID VITREOUS ENVELOPE AND BEING HERMETICALLY SEALED THERETO WHEREBY THE FIRST END OF SAID SECOND ELECTRODE EXTENDS WITHIN SAID ENVELOPE; AND A RESILIENT METALLIC ELEMENT POSITIONED WITHIN SAID ENVELOPE AND ELECTRICALLY INTERCONNECTING SAID FIRST END OF SAID SECOND ELECTRODE AND SAID ALLOY BUTTON.

References Cited (Backward Citations)

US2623102A Cited
US2561411A Cited
US2697052A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1959-02-27 1959-08-29 1960-02-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1963-02-27 1963-08-29 1964-02-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1967-02-27 1967-08-29 1968-02-28 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag