Patent US2686741A successfully refreshed from Google Patents.
US2686741A
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Process of impregnating and drying wood and composition therefor
Assignee: Fine Hardwoods Association
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Filing: 1952-12-18
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Granted: 1954-08-17
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Expires: 1972-12-18
Abstract
No abstract record available.
Inventors
- 👤 Farber Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:55
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/34; B27K3/50; B27K3/02; B27K3/0278; B27K5/00; B27K5/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
64 words
A COMPOSITION FOR TREATING WOOD TO REDUCE THE VOLUMETRIC SHRINKAGE OF THE WOOD WHEN THE MOISTURE CONTENT THEREOF IS LOWERED, CONSISTING ESSENTIALLY OF UREA AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF HYDROXYACETIC ACID AND THE ALKALI METAL AND AMMONIUM SALTS OF HYDROXYACETIC ACID, SAID COMPOSITION CONTAINING FROM ABOUT 0.08 TO ABOUT 0.30 PARTS BY WEIGHT OF SAID MATERIAL PER PART OF UREA.
Claim 2
Dependent Claim
64 words
A COMPOSITION FOR TREATING WOOD TO REDUCE THE VOLUMETRIC SHRINKAGE OF THE WOOD WHEN THE MOISTURE CONTENT THEREOF IS LOWERED, CONSISTING ESSENTIALLY OF UREA AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF HYDROXYACETIC ACID AND THE ALKALI METAL AND AMMONIUM SALTS OF HYDROXYACETIC ACID, SAID COMPOSITION CONTAINING FROM ABOUT 0.08 TO ABOUT 0.30 PARTS BY WEIGHT OF SAID MATERIAL PER PART OF UREA.
Claim 3
Dependent Claim
34 words
THE METHOD WHICH COMPRISES IMPREGNATING A SUBSTANTIAL PORTION OF THE WOOD WITH THE COMPOSITION OF CLAIM 1, THEREAFTER DRYING THE SURFACE ONLY OF THE SO-TREATED WOOD, AND SUBSEQUENTLY COMPLETING THE DRYING 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) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |