US2555712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paste mold
Assignee: Corning Glass Works
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Filing: 1949-01-08
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Granted: 1951-06-05
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Expires: 1969-01-08
Abstract
No abstract record available.
Inventors
- 👤 Rowland D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:07
CPC Classifications
C; C03; C03B; C03B9/00; C03B9/29; C03B9/292; C03B9/30; C03B9/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
A PASTE MOLD MADE OF METAL AND HAVING A POROUS, CARBONACEOUS GLASS-CONTACTING SURFACE CONTAINING A COLD WATER-SOLUBLE CELLULOSE ESTHER.
Claim 2
Dependent Claim
19 words
A PASTE MOLD MADE OF METAL AND HAVING A POROUS, CARBONACEOUS GLASS-CONTACTING SURFACE CONTAINING A COLD WATER-SOLUBLE CELLULOSE ESTHER.
Claim 3
Independent Claim
59 words
THE METHOD OF FORMING HOT PLASTIC GALSS IN A PASTE MOLD HAVING A POROUS, CARBONACEOUS, GLASS-CONTACTING SURFACE, WHICH COMRPSIES THE STEPS OF ALTERNATELY BLOWING HOT PLASTIC GLASS TO SHAPE WITHIN THE MOLD AND COOLING THE MOLD, AND OF INTERMITTENTLY APPLYING AN AQUEOSU SOLUTION OF A COLD WATER-SOLUTION CELLULOSE ETHER TO THE GLASS-CONTACTING SURFACE OF THE MOLD BETWEEN GLASS-SHAPING OPERATIONS.
Claim 4
Independent Claim
59 words
THE METHOD OF FORMING HOT PLASTIC GALSS IN A PASTE MOLD HAVING A POROUS, CARBONACEOUS, GLASS-CONTACTING SURFACE, WHICH COMRPSIES THE STEPS OF ALTERNATELY BLOWING HOT PLASTIC GLASS TO SHAPE WITHIN THE MOLD AND COOLING THE MOLD, AND OF INTERMITTENTLY APPLYING AN AQUEOSU SOLUTION OF A COLD WATER-SOLUTION CELLULOSE ETHER TO THE GLASS-CONTACTING SURFACE OF THE MOLD BETWEEN GLASS-SHAPING OPERATIONS.
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) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |