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Patent US4305978A successfully refreshed from Google Patents.
US4305978A
Expired / Lapsed
US
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Process for treatment of wood
Assignee: Individual
•
Filing: 1980-02-29
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Granted: 1981-12-15
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Expires: 2000-02-29
Abstract
Abstract An improved wood preservation process is disclosed wherein wood is contacted with an emulsion of an oil-based perservative in water.
Inventors
- 👤 Bror O. Hager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:32
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/34; B27K3/44; B27K3/48; B27K3/02; B27K3/0278; B27K3/0285; B27K3/16; B27K3/22; B27K5/00; B27K5/001; B27K5/007; B27K5/008; B27K5/02; B27K5/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
58 words
A process for the preservation of wood and other organic products comprising impregnating said product with an emulsion of an oil-based preservative in water, drying the impregnated product under a vacuum in oil at a temperature of between about 60° and 90° C., withdrawing the oil from the product without breaking the vacuum, and recovering the treated product.
Claim 2
Dependent Claim
58 words
A process for the preservation of wood and other organic products comprising impregnating said product with an emulsion of an oil-based preservative in water, drying the impregnated product under a vacuum in oil at a temperature of between about 60° and 90° C., withdrawing the oil from the product without breaking the vacuum, and recovering the treated product.
Claim 3
Dependent Claim
14 words
A process according to claim 1 wherein the oil-based preservative comprises an oily preservative.
Claim 4
Dependent Claim
19 words
A process according to claim 1 wherein the oil-based preservative comprises a preservative which is dissolved in an oil.
Claim 5
Dependent Claim
19 words
The process of claim 3 wherein said oil in which said preservative is dissolved has a high boiling point.
Claim 6
Dependent Claim
20 words
The process of claim 1 wherein said product is dried under a vacuum at a temperature of about 80° C.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein said oil is pigmented so as to impart color to the product.
Claim 8
Dependent Claim
22 words
The process of claim 1 wherein said emulsion comprises from about 5 to about 20 percent by weight of said oil-based preservative.
Claim 9
Dependent Claim
16 words
The process of claim 1 wherein said process is carried out according to the Lowry method.
Claim 10
Dependent Claim
16 words
The process of claim 1 wherein said process is carried out according to the Ruping method.
Claim 11
Dependent Claim
12 words
The process of claim 2 wherein said oily preservative comprises zinc naphthenate.
Claim 12
Dependent Claim
12 words
The process of claim 2 wherein said oily preservative comprises copper tallate.
Claim 13
Dependent Claim
10 words
The process of claim 3 wherein said preservative comprises pentachlorophenol.
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) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |