Patent US3661633A successfully refreshed from Google Patents.
US3661633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for impregnating wood and wood products
Assignee: Individual
•
Filing: 1970-01-26
•
Granted: 1972-05-09
•
Expires: 1990-01-26
Abstract
Abstract Wood impregnating compositions are provided comprising a polyoxyalkylene glycol having a molecular weight within the range from about 200 to about 5,000, which is sufficiently soluble in water to form at least a 30 percent solution, and at least one thermoplastic resinous or resin forming material compatible with the glycol and capable of retaining the glycol in the wood. A method of improving dimensional stability of natural wood by applying to the wood such a wood-impregnating composition, and wood treated with such a composition, are also provided.
Inventors
- 👤 Rolf Erhard Moren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:15
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/02; B27K3/15; C; C08; C08L; C08L71/00; C08L71/02; Y; Y10; Y10T; Y10T428/00; Y10T428/4935; Y10T428/662
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
26 words
Wood products in accordance with claim 1, in which the polyol comprises from about 0.5 to 40 percent of the dry weight of the wood treated.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |