US2611712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a cellulated glass body
Assignee: Pittsburgh Corning LLC
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Filing: 1949-01-12
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Granted: 1952-09-23
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Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 Walter D Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:20
CPC Classifications
C; C03; C03C; C03C11/00; C03C11/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS OF FORMING CELLULAR GLASS BOIDES WHICH COMPRISES THOROUGHLY ADMIXING A MIXTURE OF THE FOLLOWING COMPOSITION: PLACING THE MIXTURE IN A REFRACTORY MOLE IN AN AMOUNT OF APPROXIMATELY 1/7 TO FILL IT, THEN HEATING THE MIXTURE UNTIL A SINTERED, COHERED AND BLOATED MASS IN FORMED WITHOUT ACTUAL LIQUEFACTION.
Claim 2
Dependent Claim
49 words
A PROCESS OF FORMING CELLULAR GLASS BOIDES WHICH COMPRISES THOROUGHLY ADMIXING A MIXTURE OF THE FOLLOWING COMPOSITION: PLACING THE MIXTURE IN A REFRACTORY MOLE IN AN AMOUNT OF APPROXIMATELY 1/7 TO FILL IT, THEN HEATING THE MIXTURE UNTIL A SINTERED, COHERED AND BLOATED MASS IN FORMED WITHOUT ACTUAL LIQUEFACTION.
References Cited (Backward Citations)
GB447805A
Cited
US2337672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |