US2851330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating molds
Assignee: OI Glass Inc
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Filing: 1955-04-15
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Granted: 1958-09-09
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Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 William C Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:07
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/38; B28B7/384; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B29C33/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
THE METHOD OF PROVIDING A LIQUID INTERFACE BETWEEN A MOLD WALL AND SILICEOUS MOLDABLE MATERIAL DURING THE HEAT REACTION PERIOD OF SAID MOLDABLE MATERIAL AT A TEMPERATURE IN EXCESS OF 210*F. AND A SOLID NTERFACE DURING THE COOLING PERIOD OF SAID MATERIAL IN THE MOLD AT A TEMPERATURE OF BELOW 210*F. TO EFFECT A DEFINITE SEPARATION BETWEEN SAID MOLD WALL AND SAID MATERIAL COMPRISING COATING SAID MOLD WALL AT ROOM TEMPERATURE WITH A SUSPENSION IN AN OILY, CARRIER OF A MINOR AMOUNT OF PARTIALLY OXIDIZED, LOW-MOLECULAR WEIGHT POLYETHYLENE PARTICLES HAVING THE CONSISTUENCY OF HARD WAX AT ATMOSPHERIC TEMPERATURE, SAID POLYETHYLENE PARTICLES MELTING DURING SAID HEAT REACTION PERIOD WHEN THE TEMPERATURE IS GREATER THAN 210*F., THE MOLTEN POLYETHYLENE FORMING A LIQUID INTERFACE BETWEEN SAID MOLD WALL AND SAID SILICEOUS MOLDABLE MATERIAL, SAID MOLTEN POLYETHYLENE SOLIDIFYING WHEN SAID HEAT REACTION TEMPERATURE IS BELOW 210*F. TO FORM A SOLID INTERFACE BETWEEN SAID MOLD WALL AND THE MOLDED SILICEOUS MATERIAL.
Claim 2
Independent Claim
156 words
THE METHOD OF PROVIDING A LIQUID INTERFACE BETWEEN A MOLD WALL AND SILICEOUS MOLDABLE MATERIAL DURING THE HEAT REACTION PERIOD OF SAID MOLDABLE MATERIAL AT A TEMPERATURE IN EXCESS OF 210*F. AND A SOLID NTERFACE DURING THE COOLING PERIOD OF SAID MATERIAL IN THE MOLD AT A TEMPERATURE OF BELOW 210*F. TO EFFECT A DEFINITE SEPARATION BETWEEN SAID MOLD WALL AND SAID MATERIAL COMPRISING COATING SAID MOLD WALL AT ROOM TEMPERATURE WITH A SUSPENSION IN AN OILY, CARRIER OF A MINOR AMOUNT OF PARTIALLY OXIDIZED, LOW-MOLECULAR WEIGHT POLYETHYLENE PARTICLES HAVING THE CONSISTUENCY OF HARD WAX AT ATMOSPHERIC TEMPERATURE, SAID POLYETHYLENE PARTICLES MELTING DURING SAID HEAT REACTION PERIOD WHEN THE TEMPERATURE IS GREATER THAN 210*F., THE MOLTEN POLYETHYLENE FORMING A LIQUID INTERFACE BETWEEN SAID MOLD WALL AND SAID SILICEOUS MOLDABLE MATERIAL, SAID MOLTEN POLYETHYLENE SOLIDIFYING WHEN SAID HEAT REACTION TEMPERATURE IS BELOW 210*F. TO FORM A SOLID INTERFACE BETWEEN SAID MOLD WALL AND THE MOLDED SILICEOUS MATERIAL.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |