US3151966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making glass foam
Assignee: Owens Corning
•
Filing: 1958-05-15
•
Granted: 1964-10-06
•
Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 Slayter Games
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:21
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE METHOD OF MAKING A GLASS FOAM WHICH COMPRISES MELTING A GLASS AND A NUCLEATING AGENT TO A HOMOGENEOUS STATE, SUPPLYING A GAS BELOW THE SURFACE OF THE MOLTEN MELT AND DISPERSING THE GAS THROUGH THE MELT, MAINTAINING THE GLASS AT A TEMPERATURE WITHIN ITS NUCLEATION RANGE TO CAUSE THE FORMATION OF NUCLEI THEREIN, AND HEATING THE RESULTING GLASS TO A TEMPERATURE WITHIN A CRYSTAL FORMING RANGE OF THE GLASS IN WHICH CRYSTALS GROW, THEREBY CAUSING THE DISSOLVED GAS TO BE THROWN OUT OF SOLUTION TO CAUSE FOAM GENERATION.
Claim 2
Independent Claim
89 words
THE METHOD OF MAKING A GLASS FOAM WHICH COMPRISES MELTING A GLASS AND A NUCLEATING AGENT TO A HOMOGENEOUS STATE, SUPPLYING A GAS BELOW THE SURFACE OF THE MOLTEN MELT AND DISPERSING THE GAS THROUGH THE MELT, MAINTAINING THE GLASS AT A TEMPERATURE WITHIN ITS NUCLEATION RANGE TO CAUSE THE FORMATION OF NUCLEI THEREIN, AND HEATING THE RESULTING GLASS TO A TEMPERATURE WITHIN A CRYSTAL FORMING RANGE OF THE GLASS IN WHICH CRYSTALS GROW, THEREBY CAUSING THE DISSOLVED GAS TO BE THROWN OUT OF SOLUTION TO CAUSE FOAM GENERATION.
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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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |