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USRE28301E Expired / Lapsed US ⏱️ 0.0 years remaining

Hot isostatic pressing using a vitreous container

Assignee: Cyclops Corp
•
Filing: 1973-11-19
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Granted: 1975-01-14
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Expires: 1993-11-19
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Abstract

Abstract 1. THE METHOD PRODUCING A DENSIFIED OBJECT FROM METALLIC, INORGANIC NONMETALLIC AND COMBINATIONS OF METALLIC AN INORGANIC NONMETALLIC POWDERS, WHICH COMPRISES HERMETICALLY SEALING UNDER SUBATMOSPHERIC PRESSURE A VOLUME OF THE POWDER WITHIN A VITREOUS CONTAINER HAVING AN APPROXIMATE CAPACITY EQUAL TO THE VOLUME OF POWDER CONTAINED THEREIN; HEATING THE CONTAINER AND CONTENTS TO RENDER THE CONTAINER PLASTIC AND TO RAISE THE POWDER TEMPERATURE TO AN APPROPRIATE COMPACTING TEMPERATURE, SUBJECTING THE CONTAINER TO EXTERNAL PRESSURE ABOVE THE CONTAINER INTERNAL PRESSURE TO CAUSE COLLAPSE OF THE CONTAINER ABOUT THE POWDER WITHIN, TO PROMOTE DENSIFICATION, AND THEREAFTER COOLING THE CONTAINER AND CONTENTS, AND THEREBY EFFECTING REMOVAL OF THE VITREOUS CONTAINER FROM THE DENSIFIED OBJECT.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 02:46
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/12; B22F3/14; B22F3/15; B22F3/1208; B22F3/1216; B22F3/1225; B30; B30B; B30B11/00; B30B11/001; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49337

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 110 words
THE METHOD PRODUCING A DENSIFIED OBJECT FROM METALLIC, INORGANIC NONMETALLIC AND COMBINATIONS OF METALLIC AN INORGANIC NONMETALLIC POWDERS, WHICH COMPRISES HERMETICALLY SEALING UNDER SUBATMOSPHERIC PRESSURE A VOLUME OF THE POWDER WITHIN A VITREOUS CONTAINER HAVING AN APPROXIMATE CAPACITY EQUAL TO THE VOLUME OF POWDER CONTAINED THEREIN; HEATING THE CONTAINER AND CONTENTS TO RENDER THE CONTAINER PLASTIC AND TO RAISE THE POWDER TEMPERATURE TO AN APPROPRIATE COMPACTING TEMPERATURE, SUBJECTING THE CONTAINER TO EXTERNAL PRESSURE ABOVE THE CONTAINER INTERNAL PRESSURE TO CAUSE COLLAPSE OF THE CONTAINER ABOUT THE POWDER WITHIN, TO PROMOTE DENSIFICATION, AND THEREAFTER COOLING THE CONTAINER AND CONTENTS, AND THEREBY EFFECTING REMOVAL OF THE VITREOUS CONTAINER FROM THE DENSIFIED OBJECT.
Claim 2
Independent Claim 110 words
THE METHOD PRODUCING A DENSIFIED OBJECT FROM METALLIC, INORGANIC NONMETALLIC AND COMBINATIONS OF METALLIC AN INORGANIC NONMETALLIC POWDERS, WHICH COMPRISES HERMETICALLY SEALING UNDER SUBATMOSPHERIC PRESSURE A VOLUME OF THE POWDER WITHIN A VITREOUS CONTAINER HAVING AN APPROXIMATE CAPACITY EQUAL TO THE VOLUME OF POWDER CONTAINED THEREIN; HEATING THE CONTAINER AND CONTENTS TO RENDER THE CONTAINER PLASTIC AND TO RAISE THE POWDER TEMPERATURE TO AN APPROPRIATE COMPACTING TEMPERATURE, SUBJECTING THE CONTAINER TO EXTERNAL PRESSURE ABOVE THE CONTAINER INTERNAL PRESSURE TO CAUSE COLLAPSE OF THE CONTAINER ABOUT THE POWDER WITHIN, TO PROMOTE DENSIFICATION, AND THEREAFTER COOLING THE CONTAINER AND CONTENTS, AND THEREBY EFFECTING REMOVAL OF THE VITREOUS CONTAINER FROM THE DENSIFIED OBJECT.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-01-13 1978-07-15 1979-01-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-01-13 1982-07-15 1983-01-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-01-13 1986-07-15 1987-01-14 $7700.00 Window Closed / Lapsed

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