US2907684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of impregnating wood with paraffin wax and with polyethylene glycol to improve its cutting qualities
Assignee: Dow Chemical Co
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Filing: 1954-04-29
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Granted: 1959-10-06
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Expires: 1974-04-29
Abstract
No abstract record available.
Inventors
- 👤 Alexander M Partansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:00
CPC Classifications
B; B27; B27K; B27K5/00; B27K5/04; B27K3/00; B27K3/02; B27K3/15; C; C08; C08L; C08L91/00; C08L91/06; C08L91/08; C08L97/00; C08L97/02; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD FOR DIMINISHING DIFFERENCES BETWEEN THE CUTTING CHARACTERISTICS OF SPRING AND SUMMER WOOD WITHOUT MATERIALY SOFTENING THE WOOD, WHICH COMPRISES THE STEPS OF (A) DISTRIBUTING THROUGH THE WOOD FROM 1 TO 6 PERCENT OF ITS WEIGHT OF PARRAFIN WAX HAVING A MELTING POINT OF AT LEAST 49*C.; AND (B) SUBJECTING THE WOOD TO FULL CELL IMPREGNATION WITH A WATER-MISCIBLE SOLUTION OF FROM 1 TO 25 PERCENT BY WEIGHT OF A COMPOUND FROM THE GROUP CONSISTING OF POLYETHYLENE GLYCOL, HAVING A MOLECULAR WEIGHT OF AT LEAST 6000 AND A MELTING POINT OF AT LEAST 60*C., AND THE WATER-SOLUBLE ETHERS AND ESTERS THEREOF, AND DRYING THE SO-IMPREGNATED WOOD SLOWLY.
Claim 2
Independent Claim
108 words
THE METHOD FOR DIMINISHING DIFFERENCES BETWEEN THE CUTTING CHARACTERISTICS OF SPRING AND SUMMER WOOD WITHOUT MATERIALY SOFTENING THE WOOD, WHICH COMPRISES THE STEPS OF (A) DISTRIBUTING THROUGH THE WOOD FROM 1 TO 6 PERCENT OF ITS WEIGHT OF PARRAFIN WAX HAVING A MELTING POINT OF AT LEAST 49*C.; AND (B) SUBJECTING THE WOOD TO FULL CELL IMPREGNATION WITH A WATER-MISCIBLE SOLUTION OF FROM 1 TO 25 PERCENT BY WEIGHT OF A COMPOUND FROM THE GROUP CONSISTING OF POLYETHYLENE GLYCOL, HAVING A MOLECULAR WEIGHT OF AT LEAST 6000 AND A MELTING POINT OF AT LEAST 60*C., AND THE WATER-SOLUBLE ETHERS AND ESTERS THEREOF, AND DRYING THE SO-IMPREGNATED WOOD SLOWLY.
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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |