Patent US3354024A successfully refreshed from Google Patents.
US3354024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular glass nodules and method of making them
Assignee: Pittsburgh Corning LLC
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Filing: 1963-07-23
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Granted: 1967-11-21
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Expires: 1983-07-23
Abstract
No abstract record available.
Inventors
- 👤 D Eustachio Dominic
- 👤 Walter D Ford
- 👤 Howard E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:34
CPC Classifications
C; C03; C03C; C03C11/00; C03C11/007; C03B; C03B19/00; C03B19/10; C03B19/108; C03B19/1085; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
AS AN ARTICLE OF MANUFACTURE, A CELLULAR NODULE COMPRISING A CORE OF A CELLULAR GLASSY MATERIAL HAVING A PLURALITY OF SMALL UNIFORM COHERED BUBBLES OF GLASS AND A THIN OUTER SKIN OF A GLASSY MATERIAL HAVING A COMPOSITION OTHER THAN THE COMPOSITION OF SAID CORE OF GLASSY MATERIAL, SAID SKIN OF GLASSY MATERIAL COMPRISING THE REACTION PRODUCT OF A GLASS FORMER PARTING AGENT AND A GLASS FLUXING AGENT, SAID GLASS FLUXING AGENT HAVING A MELTING POINT LOWER THAN THE MELTING POINT OF SAID CORE OF CELLULAR GLASSY MATERIAL.
Claim 2
Dependent Claim
88 words
AS AN ARTICLE OF MANUFACTURE, A CELLULAR NODULE COMPRISING A CORE OF A CELLULAR GLASSY MATERIAL HAVING A PLURALITY OF SMALL UNIFORM COHERED BUBBLES OF GLASS AND A THIN OUTER SKIN OF A GLASSY MATERIAL HAVING A COMPOSITION OTHER THAN THE COMPOSITION OF SAID CORE OF GLASSY MATERIAL, SAID SKIN OF GLASSY MATERIAL COMPRISING THE REACTION PRODUCT OF A GLASS FORMER PARTING AGENT AND A GLASS FLUXING AGENT, SAID GLASS FLUXING AGENT HAVING A MELTING POINT LOWER THAN THE MELTING POINT OF SAID CORE OF CELLULAR GLASSY MATERIAL.
Claim 3
Independent Claim
141 words
THE METHOD OF FORMING CELLULAR GLASS NODULES HAVING AN OUTER SURFACE OF A COMPOSITION OTHER THAN THE COMPOSITION OF THE INSIDE COMPRISING ADMIXING FORMULATED GLASS PARTICLES AND A CELLULATING AGENT, WETTING SAID ADMIXTURE WITH A MATERIAL CONTAINING A BINDER AND A GLASS FLUXING AGENT, FORMING SAID WETTED ADMIXTURE INTO DISCRETE PELLETS, TREATING SAID PELLETS SO THAT AT LEAST PART OF SAID GLASS FLUXING AGENT MIGRATES TO THE SURFACE OF SAID PELLETS, COATING THE OUTER SURFACE OF SAID PELLETS WITH A GLASS FORMER PARTING AGENT, AND HEATING SAID PELLETS TO A TEMPERATURE SUFFICIENT TO FLUX AT LEAST A PORTION OF SAID GLASS FORMER PARTING AGENT ON THE SURFACE OF SAID PELLET TO FORM A SURFACE COATING OF A GLASSY MATERIAL HAVING A COMPOSITION OTHER THAN THE COMPOSITION OF THE INSIDE OF SAID PELLETS AND CELLULATE SAID PELLETS TO FORM CELLULAR GLASS NODULES.
Claim 4
Independent Claim
141 words
THE METHOD OF FORMING CELLULAR GLASS NODULES HAVING AN OUTER SURFACE OF A COMPOSITION OTHER THAN THE COMPOSITION OF THE INSIDE COMPRISING ADMIXING FORMULATED GLASS PARTICLES AND A CELLULATING AGENT, WETTING SAID ADMIXTURE WITH A MATERIAL CONTAINING A BINDER AND A GLASS FLUXING AGENT, FORMING SAID WETTED ADMIXTURE INTO DISCRETE PELLETS, TREATING SAID PELLETS SO THAT AT LEAST PART OF SAID GLASS FLUXING AGENT MIGRATES TO THE SURFACE OF SAID PELLETS, COATING THE OUTER SURFACE OF SAID PELLETS WITH A GLASS FORMER PARTING AGENT, AND HEATING SAID PELLETS TO A TEMPERATURE SUFFICIENT TO FLUX AT LEAST A PORTION OF SAID GLASS FORMER PARTING AGENT ON THE SURFACE OF SAID PELLET TO FORM A SURFACE COATING OF A GLASSY MATERIAL HAVING A COMPOSITION OTHER THAN THE COMPOSITION OF THE INSIDE OF SAID PELLETS AND CELLULATE SAID PELLETS TO FORM CELLULAR GLASS NODULES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |