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US3734769A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of forming microelements

Assignee: Bio Rad Laboratories Inc
•
Filing: 1970-08-06
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Granted: 1973-05-22
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Expires: 1990-08-06
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Abstract

Abstract A METHOD OF FORMING MICROELEMENTS OF A GIVEN CONFIGURATION BY PRODUCING IN VACUUM A NUMBER OF SEPARATE ION BEAMS OF MATERIALS, EACH BEAM BEING DIRECTED ONE AT A TIME TO A COMMON PATH. EACH BEAM IS INTENSITY CONTROLLED AND IS ELECTROSTATICALLY FOCUSED ONTO A COMMON WORK PIECE. THE FOCUSED BEAM IS DEFLECTED LATERALLY TO TRACE OUT A TWO-DIMENSIONAL ASPECT OF THE CONFIGURATION OF THEMICROELEMENT, THE IONS BEING DISCHARGED ALONG THE TRACE TO WRITE-IN THE MICROELEMENT, MULTIPLE LAYERS BEING FORMED, IF DESIRED BY DEPOSITNG MATERIAL ON TOP OFPREVIOUSLY DISCHARGED IONS. THE METHOD IS PREFERABLY PERFORMED ELECTRONICALLY IN ACCORDANCE WITH A SEQUENCE OF INSTRUCTIONS DETERMINING THE PARAMETERS FOR A GIVEN TYPE OF MICROELEMENT.

Inventors

  • 👤 T Hirschfeld

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 17:35
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; C; C23; C23C; C23C14/00; C23C14/22; C23C14/221; H01; H01J; H01J37/00; H01J37/30; H01J37/304; H01J37/317; H01J37/3178; H10N; H10N97/00; H10P; H10P95/00

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1976-05-21 1976-11-20 1977-05-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-05-21 1980-11-20 1981-05-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-05-21 1984-11-20 1985-05-22 $7700.00 Window Closed / Lapsed

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