US2882182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a wax coated fibrous sheet material
Assignee: Sunoco Inc
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Filing: 1955-08-30
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Granted: 1959-04-14
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Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 John D Tench
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:54
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
PROCESS FOR PREPARING A WAX COATED FIBROUS SHEET MATERIAL HAVING ON ONE SIDE A WAX COATING OF HIGH GLOSS AND ON THE OPPOSITE SIDE A WAX COATING OF HIGH WATER VAPOR RESISTANCE WHICH COMPRISES: (A) PASSING SAID SHEET MATERIAL THROUGH A MOLTEN WAX BATH WHEREBY COATINGS OF MOLTEN WAX ADHERE TO EACH SIDE THEREOF, (B) PASSING THE SO-COATED SHEET MATERIAL THROUGH A WATER BATH TO SOLIDIFY RAPIDLY THE WAX COATINGS, (C) PASSING THE SHEET MATERIAL HAVING COATINGS OF SOLID WAX ON EACH SIDE THEREOF ADJACENT A HEAT SOURCE WHEREBY THE WAX OF THE WAX COATING ON ONE SIDE IS COVERTED AT LEAST IN PART TO THE MOLTEN STATE (D) PASSING THE SHEET MATERIAL ADJACENT CONTROLLED COOLING MEANS TO SOLIDIFY SLOWLY THE WAX OF THE WAX COATING CONVERTED AT LEAST IN PART TO THE MOLTEN STATE TO PRODUCE A WAX COATED FIBROUS SHEET MATERIAL HAVING ON ONE SIDE A WAX COATING OF HIGH GLOSS AND ON THE OPPOSITE SIDE A WAX COATING OF HIGH WATER VAPOR RESISTANCE.
Claim 2
Dependent Claim
166 words
PROCESS FOR PREPARING A WAX COATED FIBROUS SHEET MATERIAL HAVING ON ONE SIDE A WAX COATING OF HIGH GLOSS AND ON THE OPPOSITE SIDE A WAX COATING OF HIGH WATER VAPOR RESISTANCE WHICH COMPRISES: (A) PASSING SAID SHEET MATERIAL THROUGH A MOLTEN WAX BATH WHEREBY COATINGS OF MOLTEN WAX ADHERE TO EACH SIDE THEREOF, (B) PASSING THE SO-COATED SHEET MATERIAL THROUGH A WATER BATH TO SOLIDIFY RAPIDLY THE WAX COATINGS, (C) PASSING THE SHEET MATERIAL HAVING COATINGS OF SOLID WAX ON EACH SIDE THEREOF ADJACENT A HEAT SOURCE WHEREBY THE WAX OF THE WAX COATING ON ONE SIDE IS COVERTED AT LEAST IN PART TO THE MOLTEN STATE (D) PASSING THE SHEET MATERIAL ADJACENT CONTROLLED COOLING MEANS TO SOLIDIFY SLOWLY THE WAX OF THE WAX COATING CONVERTED AT LEAST IN PART TO THE MOLTEN STATE TO PRODUCE A WAX COATED FIBROUS SHEET MATERIAL HAVING ON ONE SIDE A WAX COATING OF HIGH GLOSS AND ON THE OPPOSITE SIDE A WAX COATING OF HIGH WATER VAPOR RESISTANCE.
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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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |