US2631109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of impregnating wood
Assignee: Armstrong World Industries Inc
•
Filing: 1948-12-08
•
Granted: 1953-03-10
•
Expires: 1968-12-08
Abstract
No abstract record available.
Inventors
- 👤 George E Gard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:03
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/02; B27K3/0207; B27K3/0214; B27K3/0278; B27K3/0285; B27K5/00; B27K5/001; B27K5/003; B27K5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A METHOD OF IMPREGNATING WOOD WITH AN IMPREGNANT, THE STEPS COMPRISING SUBJECTING THE WOOD TO A HIGH FREQUENCY ELECTRICAL FIELD TO HEAT THE WOOD BY THE DIELECTRIC EFFECT TO A TEMPERATURE BELOW ABOUT 212* F. UNTIL ITS WATER CONTENT HAS BEEN REDUCED TO ESSENTIALLY ZERO, HEATING SAID WOOD TO A TEMPERATURE SUBSTANTIALLY ABOVE 212* F. AND IMMERSING SAID WOOD HEATED TO A TEMPERATURE SUBSTANTIALLY ABOVE 212* F. AND AT ESSENTIALLY ZERO CONTENT OF WATER IN A BATH OF IMPREGNATING MATERIAL THE TEMPERATURE OF WHICH IS AT LEAST 50* F. LOWER THAN THE TEMPERATURE OF THE WOOD.
Claim 2
Dependent Claim
97 words
IN A METHOD OF IMPREGNATING WOOD WITH AN IMPREGNANT, THE STEPS COMPRISING SUBJECTING THE WOOD TO A HIGH FREQUENCY ELECTRICAL FIELD TO HEAT THE WOOD BY THE DIELECTRIC EFFECT TO A TEMPERATURE BELOW ABOUT 212* F. UNTIL ITS WATER CONTENT HAS BEEN REDUCED TO ESSENTIALLY ZERO, HEATING SAID WOOD TO A TEMPERATURE SUBSTANTIALLY ABOVE 212* F. AND IMMERSING SAID WOOD HEATED TO A TEMPERATURE SUBSTANTIALLY ABOVE 212* F. AND AT ESSENTIALLY ZERO CONTENT OF WATER IN A BATH OF IMPREGNATING MATERIAL THE TEMPERATURE OF WHICH IS AT LEAST 50* F. LOWER THAN THE TEMPERATURE OF THE WOOD.
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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |