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US3413098A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for varying the width of sheets of web material

Assignee: Westinghouse Electric Corp
•
Filing: 1966-08-10
•
Granted: 1968-11-26
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Expires: 1986-08-10
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Abstract

No abstract record available.

Inventors

  • 👤 Steven N Dermatis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 10:14
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/36; C30B29/00; C30B29/60; Y; Y10; Y10S; Y10S117/00; Y10S117/901; Y10S117/902; Y10S117/903; Y10S117/911

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 251 words
A PROCESS FOR PRODUCING AN ELONGATED BODY OF A MATERIAL CRYSTALLIZING IN THE DIAMOND CUBIC LATTICE STRUCTURE COMPRISED OF AT LEST TWO PARALLEL ELONGTED DENDRITIC CRYSTALS, SAID DENDRITIC CYRSTALS BEING JOINED CYRSTALLOGRAPHICALLY INTO A UNITARY BODY BY A THIN WEB PORTION OF THE SAME SEMICONDUCTOR MATERIAL EXTENDING BETWEEN THE DENDRITIC CRYSTALS, THE STEPS COMPRISING MELTING A QUANTITY OF THE MATERIAL, BRINGING THE MELT TO A TEMPERATURE AT APPROXIMATELY THE METLING POINT OF THE MATERIAL, CONTACTING A POINT ON A SURFACE OF THE MELTED MATERIAL DISPLACED FROM THE CENTER OF THE MELT SURFACE WITH A LEAST A SURFACE OF A SEED CRYSTAL IN WHICH THE SEED CONTACTS THE MELT AT A POINT EQUAL TO APPROXIMATELY ONE-HALF THE RADIUS OF THE SUPERCOOLED AREA FROM THE CENTER OF THE MELT OF THE MATERIAL FOR A PERIOD OF TIME TO WET THE SEED CRYSTAL WITH THE MELTED MATERIAL, THE SEED CRYSTAL HAVING AT LEAST TWO TWIN PLANES EXTENDING ACROSS AT LEAST A PORTION OF THE SURFACE IN CONTACT WITH THE MELT, THE SEED CRYSTAL BEING ORIENTED WITH A (111) DIRECTION PARALLEL TO THE SURFACE OF THE MELT AND A (211) DIRECTION PERPENDICULAR TO THE SURFACE OF THE MELT, THE TWIN PLANES BEING PARALLEL TO THE (211) DIRECTION SUPERCOOLING AT LEST THAT PORTION OF THE MELT EXTENDING FROM THE CENTER OF THE MELT AND ENCOMPASSING THE SEED TO A TEMPERATURE AT LEAST 5*C. BELOW THE MELTING PONT, THE SURFACE AREA OF THE SUPERCOOLED PORTION BEING AT LEAST 0.25 SQ. INCH AND PULLING THE SEED CRYSTAL FROM
Claim 2
Dependent Claim 251 words
A PROCESS FOR PRODUCING AN ELONGATED BODY OF A MATERIAL CRYSTALLIZING IN THE DIAMOND CUBIC LATTICE STRUCTURE COMPRISED OF AT LEST TWO PARALLEL ELONGTED DENDRITIC CRYSTALS, SAID DENDRITIC CYRSTALS BEING JOINED CYRSTALLOGRAPHICALLY INTO A UNITARY BODY BY A THIN WEB PORTION OF THE SAME SEMICONDUCTOR MATERIAL EXTENDING BETWEEN THE DENDRITIC CRYSTALS, THE STEPS COMPRISING MELTING A QUANTITY OF THE MATERIAL, BRINGING THE MELT TO A TEMPERATURE AT APPROXIMATELY THE METLING POINT OF THE MATERIAL, CONTACTING A POINT ON A SURFACE OF THE MELTED MATERIAL DISPLACED FROM THE CENTER OF THE MELT SURFACE WITH A LEAST A SURFACE OF A SEED CRYSTAL IN WHICH THE SEED CONTACTS THE MELT AT A POINT EQUAL TO APPROXIMATELY ONE-HALF THE RADIUS OF THE SUPERCOOLED AREA FROM THE CENTER OF THE MELT OF THE MATERIAL FOR A PERIOD OF TIME TO WET THE SEED CRYSTAL WITH THE MELTED MATERIAL, THE SEED CRYSTAL HAVING AT LEAST TWO TWIN PLANES EXTENDING ACROSS AT LEAST A PORTION OF THE SURFACE IN CONTACT WITH THE MELT, THE SEED CRYSTAL BEING ORIENTED WITH A (111) DIRECTION PARALLEL TO THE SURFACE OF THE MELT AND A (211) DIRECTION PERPENDICULAR TO THE SURFACE OF THE MELT, THE TWIN PLANES BEING PARALLEL TO THE (211) DIRECTION SUPERCOOLING AT LEST THAT PORTION OF THE MELT EXTENDING FROM THE CENTER OF THE MELT AND ENCOMPASSING THE SEED TO A TEMPERATURE AT LEAST 5*C. BELOW THE MELTING PONT, THE SURFACE AREA OF THE SUPERCOOLED PORTION BEING AT LEAST 0.25 SQ. INCH AND PULLING THE SEED CRYSTAL FROM

References Cited (Backward Citations)

GB882570A Cited
US3162507A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1971-11-26 1972-05-27 1972-11-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1975-11-26 1976-05-27 1976-11-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1979-11-26 1980-05-27 1980-11-26 $7700.00 Window Closed / Lapsed

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