US2572070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stabilizing wood
Assignee: Individual
•
Filing: 1945-03-27
•
Granted: 1951-10-23
•
Expires: 1965-03-27
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Stamm
- 👤 Tarkow Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:28
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/34; B27K3/346; B27K3/02; B27K3/0207; B27K3/0214; B27K3/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD OF REDUCING THE SWELLING, SHRINKING, AND HYGROSCOPICITY OF A PIECE OF WOOD COMPRISING AIR DRYING THE PIECE OF WOOD TO A MOISTURE CONTENT OF 2 TO 4 PERCENT, TREATING THE PREDRIED PIECE OD WOOD WITH WATER-FREE VAPORS OF A KETAL AND ACETAL GROUP FORMING REAGENT TAKEN FROM THE GROUP CONSISTING OF FORMALDEHYDE, ACETALDEHYDE, GLYOXAL, BENZALDEHYDE, AND ACETONE,
Claim 2
Independent Claim
59 words
A METHOD OF REDUCING THE SWELLING, SHRINKING, AND HYGROSCOPICITY OF A PIECE OF WOOD COMPRISING AIR DRYING THE PIECE OF WOOD TO A MOISTURE CONTENT OF 2 TO 4 PERCENT, TREATING THE PREDRIED PIECE OD WOOD WITH WATER-FREE VAPORS OF A KETAL AND ACETAL GROUP FORMING REAGENT TAKEN FROM THE GROUP CONSISTING OF FORMALDEHYDE, ACETALDEHYDE, GLYOXAL, BENZALDEHYDE, AND ACETONE,
References Cited (Backward Citations)
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US2108520A
Cited
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US2273039A
Cited
US2330826A
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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) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |