US2858236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating fibrous hardboard panels and resultant article
Assignee: Whirlpool Corp
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Filing: 1954-08-31
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Granted: 1958-10-28
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Expires: 1974-08-31
Abstract
No abstract record available.
Inventors
- 👤 John D Asselin
- 👤 Russell M Henrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:33
CPC Classifications
D; D21; D21J; D21J1/00; D21J1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/31504; Y10T428/31801
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A REFIRGERATOR PANEL COMPRISING IN COMBINATION A COMPRESSED LIGNOCELLULOSE COMPOSITION IN SHEET FORM HAVING A RESINOUS OVERLAY COATING ON AT LEAST ONE SIDE THEROF AND A WAX COATING COMPOSITION THEREON OF ABOUT 5 MILS TO ABOUT 10 MILS THICKNESS COATING AT LEAST ON THE SIDE OPPOSITE SAID OVERLAY COATED SIDE, SAID WAX COATING COMPOSITION CONTAINING A PARAFFNIC MICROCRYSTALLINE WAX HAVING A MELTING POINT OF FROM 160*F. TO ABOUT 180*F. AMD A WARY ADDITIVE CONSISSTING ESSENTILAYY OF A HIGH MOLECULAR WEIGHT ALIPHATIC JETONES OF THE GENERAL FORMULA 7R)2CO WHERE R IS DERIVED FROM A MIXTURE OF STEARIC ACID, PALMITIC ACID AND OLEIC ACID AND PRODUCING IN THE COMBINATION A RESULTANT PENETROMETER READING OF
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |