US3139353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for waxing containers of paper, cardboard or the like
Assignee: Rissen Maschinenfabrik GmbH
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Filing: 1960-06-02
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Granted: 1964-06-30
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Expires: 1980-06-02
Abstract
No abstract record available.
Inventors
- 👤 Wommelsdorf Fritz
- 👤 Zahn Joachim
- 👤 Schmidt Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:06
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/74; B31B50/742; B31B50/745; B31B50/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD OF WAXING PREFORMED CONTAINERS OF PAPER, CARDBOARD AND THE LIKE WHICH COMPRISES PROVIDING SAID CONTAINER, MELTING WAX AT A TEMPERATURE SOMEWHAT HIGHER THAN THAT OF SAID CONTAINER, THE AMOUNT OF HEAT IN SAID WAX BEING INSUFFICIENT TO RAISE THE TEMPERATURE OF THE WALL OF SAID CONTAINER TO THE MELTING POINT OF SAID WAX, APPLYING TO SAID WALL AN AMOUNT OF MELTED WAX SUBSTANTIALLY LESS THAN THAT NECESSARY TO FULLY SATURATE THE FIBERS OF SAID CONTAINER, WHEREBY A FILM IS FORMED ON THE SURFACE OF SAID WALL, THEREAFTER APPLYING TO SAID FILM SUFFICIENT HEAT FOR A SHORT TIME TO APPLY A THERMAL SHOCK TO CAUSE SAID FILM TO MELT AND ONLY THE IMMEDIATELY ADJACENT PART OF SAID WALL TO BE HEATED, WHEREBY SUBSTANTIALLY ALL OF SAID WAX ENTERS SAID WALL BY CAPILLARY ACTION AND PENETRATES ONLY PART WAY THROUGH SAID WALL.
Claim 2
Independent Claim
142 words
A METHOD OF WAXING PREFORMED CONTAINERS OF PAPER, CARDBOARD AND THE LIKE WHICH COMPRISES PROVIDING SAID CONTAINER, MELTING WAX AT A TEMPERATURE SOMEWHAT HIGHER THAN THAT OF SAID CONTAINER, THE AMOUNT OF HEAT IN SAID WAX BEING INSUFFICIENT TO RAISE THE TEMPERATURE OF THE WALL OF SAID CONTAINER TO THE MELTING POINT OF SAID WAX, APPLYING TO SAID WALL AN AMOUNT OF MELTED WAX SUBSTANTIALLY LESS THAN THAT NECESSARY TO FULLY SATURATE THE FIBERS OF SAID CONTAINER, WHEREBY A FILM IS FORMED ON THE SURFACE OF SAID WALL, THEREAFTER APPLYING TO SAID FILM SUFFICIENT HEAT FOR A SHORT TIME TO APPLY A THERMAL SHOCK TO CAUSE SAID FILM TO MELT AND ONLY THE IMMEDIATELY ADJACENT PART OF SAID WALL TO BE HEATED, WHEREBY SUBSTANTIALLY ALL OF SAID WAX ENTERS SAID WALL BY CAPILLARY ACTION AND PENETRATES ONLY PART WAY THROUGH SAID WALL.
References Cited (Backward Citations)
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US1602835A
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US2877140A
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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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |